Granted in the Metal Finishing Field Printed copies of patents are furnished by the Patent and Trademarks Offlice for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231 MIXING SYSTEM FOR PRODUCING WATER-DILUTABLE COATING AGENTS US. Patent 6,403,701. June l&2002 cf Reusmann, et al., assignors to BASF Coatings AG, Muenster- Hiltrup, Germany A mixer system for preparing water-dilutable coating composi- tions with precisely defined tint- ing from a plurality of base color. WATER-BASED COATING COMPOSITION US. Patent 6,403,709. June l&2002 S. Ramesh, et al., assignors to BASF Corp., Southfield, Mich. A curable, water-based composi- tion comprising the reaction prod- uct of a water-based copolymer prepared by free-radical polymer- ization and at least one cross- linking agent reactive with a car- bonate functional group. POWDER COATING EPOXY U.S. Patent 6,403,715. June II,2002 T Adachi, et al., assignors to Kansai WASTEWATER TREATMENT WITHOUT CHEMICALS ELECTROCOAGULATION Advanced Wastewater Treatment Technology . Assured Compliance . Reduced Treatment Costs . Turnkey Installation (ISSS-527-3526) FAX 361-594-3311 p.0. Box 667. shiner, T3xas 77984 www.kaselco.com Circle II!%? on reader information card Paint Co., Ltd., Amagasaki, Japan A thermosetting powder coating composition comprising an epoxy- containing resin; and a curing agent containing, an acid anhydride. ELECTROCOATING PROCESS l-Q’ . Patent 6,405,651. June 18,2002 D. Bennett, et al., assignors to Alcoa Inc., Pittsburgh, Pa. A process for making litho- graphic sheet material suitable for imaging by laser radiation comprising providing a metal substrate having a principal surface; and electrocoating the metal substrate by immersing it as a first electrode in a bath containing a polymeric resin and laser-sensitive particles and passing an electric current between the substrate and a second electrode of polarity opposite the first electrode, to deposit on at least the principal surface a laser-abatable layer comprising the resin and the particles, Cobalt Wick4 c. - ati1parm Circle 0% on reader information card or go to www.thru.to/webconnect or go to www.thru.to/webconnect WHEEL FINISHING APPARATUS U.S. Patent 6,406,356. June 18,2002 FE. Brooks, Fullerton, Calif: A method for abrasively finishing the front faces of wheels in abra- sive polishing media stored in a tank comprising rotatably mount- ing at least one wheel to a mount- ing structure having a wheel axis of rotation, which is normal to the front face thereof; partially sub- merging the at least one mounted wheel in the abrasive polishing media so that a submerged por- tion of the front face is in contact with the abrasive polishing media; and relatively moving the at least one partially submerged wheel through the abrasive pol- ishing media in a known direction of relative motion. COATED ABRASIVE BELT US. Patent 6,406,576. June 18,2002 H. W Benedict, et al., assignors to 3M Innovative Properties Ca, St. Paul, Minn. A method for preparing a coated abrasive belt having an endless, JUST A CLICK AWAY! Purchase your Pumps online 24/7 via a secure server Easy navigation to quickly find the pumps you need Complete product info, diagrams drawings, downloadable brochures Discussion and FAG% Circle 079 on reader information card 82 or go to www.thru.to/webconnect Metal Finishing
Transcript
Granted in the Metal Finishing Field Printed copies of patents are furnished by the Patent and Trademarks Offlice for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231
MIXING SYSTEM FOR PRODUCING
WATER-DILUTABLE COATING
AGENTS
US. Patent 6,403,701. June l&2002 cf Reusmann, et al., assignors to BASF Coatings AG, Muenster- Hiltrup, Germany A mixer system for preparing water-dilutable coating composi- tions with precisely defined tint- ing from a plurality of base color.
WATER-BASED COATING
COMPOSITION
US. Patent 6,403,709. June l&2002 S. Ramesh, et al., assignors to BASF Corp., Southfield, Mich. A curable, water-based composi- tion comprising the reaction prod- uct of a water-based copolymer prepared by free-radical polymer- ization and at least one cross- linking agent reactive with a car- bonate functional group.
POWDER COATING EPOXY
U.S. Patent 6,403,715. June II,2002 T Adachi, et al., assignors to Kansai
Paint Co., Ltd., Amagasaki, Japan A thermosetting powder coating composition comprising an epoxy- containing resin; and a curing agent containing, an acid anhydride.
ELECTROCOATING PROCESS
l-Q’. Patent 6,405,651. June 18,2002 D. Bennett, et al., assignors to Alcoa Inc., Pittsburgh, Pa. A process for making litho- graphic sheet material suitable for imaging by laser radiation comprising providing a metal substrate having a principal surface; and electrocoating the metal substrate by immersing it as a first electrode in a bath containing a polymeric resin and laser-sensitive particles and passing an electric current between the substrate and a second electrode of polarity opposite the first electrode, to deposit on at least the principal surface a laser-abatable layer comprising the resin and the particles,
Cobalt Wick4 c. - ati1parm
Circle 0% on reader information card or go to www.thru.to/webconnect or go to www.thru.to/webconnect
WHEEL FINISHING APPARATUS
U.S. Patent 6,406,356. June 18,2002 FE. Brooks, Fullerton, Calif: A method for abrasively finishing the front faces of wheels in abra- sive polishing media stored in a tank comprising rotatably mount- ing at least one wheel to a mount- ing structure having a wheel axis of rotation, which is normal to the front face thereof; partially sub- merging the at least one mounted wheel in the abrasive polishing media so that a submerged por- tion of the front face is in contact with the abrasive polishing media; and relatively moving the at least one partially submerged wheel through the abrasive pol- ishing media in a known direction of relative motion.
COATED ABRASIVE BELT
US. Patent 6,406,576. June 18,2002 H. W Benedict, et al., assignors to 3M Innovative Properties Ca, St. Paul, Minn. A method for preparing a coated abrasive belt having an endless,
JUST A CLICK AWAY! Purchase your Pumps online 24/7 via a secure server Easy navigation to quickly
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Complete product info, diagrams
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Discussion and FAG%
Circle 079 on reader information card
82
or go to www.thru.to/webconnect
Metal Finishing
seamless backing comprising preparing a loop of liquid organic polymeric binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure; solidifying the liquid organic polymeric binder material to form a flexible, solidi- fied, endless, seamless loop; apply- ing an abrasive coating to the backing loop; and removing the backing loop from the support.
fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure; solidifying the liquid organic polymeric binder material to form a flexible, solidi- fied, endless, seamless loop; applying a sheet material, coated with abrasive material, to the outer surface of the backing loop; and removing the backing loop from the support structure.
APPARATUS TO MONITOR AND
ABRASIVE BELT ADD PLATING
US. Patent 6,406,577. June 18,2002 H. W. Benedict, et al., assignors to 3M Innovative Properties Co., St. Paul, Minn. A method for preparing a coated abrasive belt having an endless, seamless backing comprising; preparing a loop of liquid organic polymeric binder material having
US. Patent 6,406,608. June 18,2002 C.E. U.oh, et al., assignors to international Business Machines Corp., Armonk, N.Y An apparatus for monitoring and adding solution to plating bath comprising at least one monitor to monitor at least one condition within the plating bath and pro-
ducing at least one signal corre- sponding to the monitored condi- tion; at least one controller for receiving the signal and deter- mining whether an additional amount of a chemical should be added to the plating bath and controlling at least one valve for controlling flow of the chemical; a tank of premixing chemicals to be added to the plating bath; a plu- rality of tanks for holding chemi- cals and supplying the chemicals to the premix tank; at least one valve between each of the holding tanks and premix tank; at least one valve between the premix tank and plating bath; a conduit connecting the plating bath to the premix tank for recycling at least a portion of the plating bath to the premix tank during plating and returning at least a portion of the recycled portion to the plating
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bath; and at least one element for treating the recycled portion by removing undesirable materials including spent, degraded, and broken-down chemicals prior to reintroduction into the plating bath.
ELECTROPLATING APPARATUS
US. Patent 6,406,610. June 18,2002 JM. Lowe, assignor to technology
Development Associate Operations Ltd., UK. An electroplating method to deposit a material onto a sub- strate, the method comprising applying a cathode connector to contact with a plurality of dis- crete regions extending sub- stantially across the width of the substrate and normal to the direction of movement of the substrate and not in the plane of the substrate.
NICKEL-COBALT PHOSPHORUS
LOW STRESS ELECTROPLATING
US. Patent 6,406,611. June IS,2002 D.E. Engelhaupt and B.D. Ramsey, assignors to University ofAlabama in Huntsville, Huntsville, Ala. and The United States ofAmerica as rep- resented by the Marshall &ace Flight Center, Washington, D.C. A process for electroplating a sub- stantially amorphous nickel- cobalt phosphorus alloy contain- ing 2 to 25% by atomic volume phosphorus onto a substrate com- prising providing an electroplat- ing bath containing 300 to 4OOmM of nickel sulfate; 20 to 50mM of cobalt sulfate; 150 to 3001nM of hypophosphorus acid or a salt thereof; 0.25 to 1.5M of boric acid or a salt thereof; 0.25 to 0.50M of glycolic acid or a salt thereof; and 30 and 1501nM of cit- ric acid or a salt thereof, the bath
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NICKEL SILICIDE FORMATION BY
ELECTRDLESS NICKEL DEPOSITION
US. Patent 6,406,743. June 11,2002 C-Y. Lee and T-H. Huang, assignors to Industrial Technology Research Institute, Hsin-chu, Taiwan A method for nickel silicide forma- tion in an integrated circuit by electroless nickel deposition on polysilicon and rapid thermal annealing comprising forming and patterning a polysilicon layer over a substrate; selectively electroless depositing nickel over the polysili- con layer; rapidly thermally annealing the substrate forming a nickel silicide layer over the poly-
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silicon layer; the nickel silicide layer forming part of a semicon- ductor integrated circuit device.
ELECfROLESS PLATING PROCESS
US. Patent 6,406,750. June 18,2002 M. 12&i, et al., assignors to Osaka Municipal Government; Matusushita Electric Industrial Co., Ltd., and C. Uyemura & Co. Ltd., all of Osaka,
Japan A process for forming catalyst nuclei on a substrate comprising preparing a substrate having a nonconductive portion to be elec- troless plated; sensitizing the nonconductive portion by dip- ping in a sensitizing solution containing bivalent tin ions; acti- vating the nonconductive portion by dipping in a first activator containing silver ions; and acti- vating by dipping in a second activator containing palladium
ions, whereby catalyst particles composed of silver nuclei and palladium nuclei each having an average particle size of 1 nm or less adsorb on the nonconductive portion at a nuclei density of 2,000 nuclei/?m2 or more.
AQUEOUS COATING COMPOSITION
US. Patent 6,406,753. June 18,2002 G. Dworak and U Kuttler, assignors
to Solutia Austria AG, Austria A coating composition compris- ing a condensation product of a carboxyl group-containing resin, a hydroxyl group-contain- ing resin, and a curing agent which becomes active at tem- peratures 120”, wherein the curing agent comprises a mix- ture of a water-insoluble unblocked isocyanate and a hydrophilic partially etherfied amino resin.
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PROCESS COATING
US. Patent 6,406,757. June 18,2002 K. Blatter, et al., assignors to E.I. du Pont de Nemours and Co., Wilimington, Del. A process for coating a surface of a substrate with a powder coat- ing composition, which comprises applying the powder coating composition to the surface of the substrate and melting and cur- ing for 1 to 300 seconds and at a radiation power of more than 1 W/cm2 using near infrared radi- ation having a wave length of 750-1,200 nm to form a finish on the substrate; and wherein the powder coating composition com- prises resins that cross-link by means of functional groups and any that form hydrogen bonds.
CONTACT ELEMENT
US Patent 6,406,991. June l&2002
Rar mmakfmetal; h b/J w solutions. RESINTECH SIR- 1000
” E-mail: [email protected] One ResinTech Plaza 160 Cooper Rd., West Berlin, NJ Of3091
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0. Sugihara, Kofu, Japan, assignor to Hoya Corp., Tokyo A method for manufacturing a contact element, which has a plurality of bumps formed by carrying out plating within bump holes bored at predeter- m ined positions on an insulating film comprising forming a lami- nated body including the insu- lating film and at least one elec- trically conductive layer; forming, in the predetermined positions of the insulating film , the bump holes extending from the surface of the insulating film to the least one electrically con- ductive layer; performing sur- face treatment by treating at least one of the interior of the bump holes and the surface of the insulating film by plasma to roughen and sufficiently wet a plating liquid used in the plat-
ing; and forming the bumps by the plating on the bump holes treated by plasma.
COMPOSITION FOR DESMUTTING
US. Patent 6,407,047. June 18,2002 M.D. Mehta and PA. Butkousky, assignors to Atotech Deutschland
ALUMlNUlW
GmbH, Berlin, Germany A composition, free of nitric acid and chromic acid, for desmutting an aluminum surface, which con- tains oxidant selected from nitrobenzene sulfonic acids, ben- zenesulfonic acids, or their salts, an acid selected from group phos- phoric acid, polyphosphoric acid, hypophosphoric acid, metaphos- phoric acid, orthphosphoric acid, pyrophoshporic acid, sulfuric acid, sulfurous acid, fluoroboric acid, acetic, gluconic, glycolic, chloroacetic, di chloroacetic, and
tri chloroacetic acid; and optional- ly, a halide ion-containing com- pound.
US. Patent 6,407,181. June 18,2002 A.l! Daly, et al., assignors Rohm and
LOW-TEMPERATURE CURING POW-
Haas Co., Philadelphia. A coating powder, the composition
DER COATING
of which comprises an epoxy com- ponent comprising a glycidyl com- ponent comprising a glycidyl (methlacrylate copolymer, a gly- cidyl (meth)acrylate polymer, and a crystalline aromatic epoxy; and a carboxylic acid component com- prising a carboxylic acid function- al polyester a crystalline polycar- boxylic acid or polyanhydride, and an acrylic polymer.
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Metal Finishing
U.S. Patent 6,409,039. June 25,2002 R.J. Jessup, assignor to Jessup Engineering Inc., Rochester Hills, Mich. A perforated finishing barrel assembly including a barrel having a lengthwise extending access opening in one side thereof and at least one cover fit into the opening, the improvement comprising at least one locking handle assembly secured to the cover enabling posi- tioning of the cover on the barrel overlying the opening therein.
DEvlcEFQRTREAllNGcoNTAMlNA~ COATING COMPOSITIONS
US. Patent 6,409,901. June 25,2002 K.S. Ritter, et al., assignors to PPG Industries Ohio, Inc., Cleveland A method of treating a liquid in an electrodeposition coating process comprising providing a tank having a liquid comprising a
contaminant and an electrocoat- ing composition comprising a resinous material, wherein the tank is a coating tank and/or a rinse tank; placing a filtering device comprising diatomaceous earth in flow communication with the tank; directing the liquid from the tank through the filtering device to separate at least a por- tion of the contaminant from the liquid; directing at least a portion of the liquid from the filtering device back into the tank; and electrodepositing a film of the electrocoating composition onto an electroconductive substrate.
ELECTROFORMING AND SQL[D
FREEFORM FABRICATION
US. Patent 6,409,902. June 25,2002 B. Yang and M.C. LAX, assignors to New Jersey Institute of Technoloa, Newark NJ
A method for producing objects by integration of an electroform- ing deposition and a solid freeform design and fabrication machine consisting of providing a predetermined shape of an object to be produced; generating a rapid prototyping master hav- ing a shape corresponding to the predetermined shape of the object and defining a generally hollow interior; generating an anode by computer-aided design, the anode having an offset dis- tance from and conforming to the shape of the shape of the rapid prototyping master; electroform- ing a layer of metal upon the rapid prototyping master to form a cathode shell; and removing the rapid prototyping master from the cathode shell, wherein a shape of the cathode shell con-
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July/August 2003 87
forms to the predetermined shape of the object.
MULTISTEP POTENTIOSTATWGAL- VANOSTATlC PLATING CONTROL
Ri’. Patent 6,409,903. June 25,2002 D.S. Chung, et al., assignors to
International Business Machines Corp., Armonk, N. Y. A multistep process for electro- plating a substrate containing a seed layer thereon with copper of other metal comprising inserting the substrate having the seed layer thereon to initiate metal plating into an apparatus com- prising a metal plating solution, an anode, and multiple cathode electrical perimeter contacts to the seed layer; plating onto the seed layer and substrate by applying to the anode and cath- ode perimeter contacts for a first time period a voltage, which was
empirically determined to cause burn-through of the seed layer; and continuing the plating for a second time period below the pre- determined threshold voltage.
ELECTROLYTE FOR ANODIZING
SOLID CAPACITORS
US. Patent 6,409,905. June 25,2002 B.J Melody, et al., assignors to Kemet Electronics Corp., Greenville, S.C.
SOLUTION FOR PLATING ANTIMONY AND AN’IIMOW COATINGS
US. Patent 6,409,906. June 25,2002 C.M,Aoun, assignor to Frank C. Danigan, Dallas An acidic aqueous solution for electroplating a metallic coating onto an electrically conductive substrate, the coating comprising at least about 75% antimony, the solution containing 0.5 to 12Og/L of antimony; an acid selected from
the group consisting of hydrochlo- ric acid, hydrofluoric acid, hydro- bromic acid, hydroiodic acid, fluo- boric acid, and sulfamic acid in an amount at least sufficient to maintain the pH of the solution below 6.0; a complexer selected from the group consisting of pyri- dine and pyridine derivative, glycine, valine, cysterine, urea, and ammonium salts; and a wet- ter selected from the group con- sisting on ethoxylated alcohols, alkanolamines, alkanolamides, alcohol sulfates, ethoxylated alkyl phenols, ethoxylated fatty acids, alkyl sulfonates, alkylsulfosucci- nates, perfluoroalkyl sulfonates, fatty acid alcohol ethoxylates, and propylene oxide/ethylene oxide block copolymers.
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US. Patent 6,409,907. June 25,2002 P Van Nest Braun, et al., assignors
to Lucent Technologies Inc., Murray Hill, N.J. A process for fabricating an article comprising a material exhibiting substantial periodicity, the process comprising providing a template comprising a colloidal crystal; elec- trochemically depositing a lattice material onto the colloidal crystal; and removing the colloidal crystal to form the material exhibiting sub- stantial periodicity.
HfGH PERFORMANCE SURFACE
COATINGS
US. Patent 6,410,086. June 25,2002 D.G. Brandon, et al., assignors to Cerel (Ceramic Technologies) Ltd., Tirat Ha Car&, and Iscar Ltd., Tefen, both Israel
A method for forming on an object a high performance surface coat-
ing having high mechanical strength exhibiting hardness and wear resistance, and high thermal and chemical durabili- ties, the method comprising electrophoretically depositing at least one surface coating material on a surface of the object for obtaining a green coating; and infiltrating into and depositing onto the green coating at least one additional surface coating material by a gas-phase infiltration/deposi- tion method, thereby forming the high performance surface coating.
AUTODEPOSITION POST-BATH
RINSE PROCESS
US. Patent 6,410,092. June 25,2002 Z. Yang and WE. Fristad, assignors Henkel Corp., Gulph Mills, Pa. A method of improving the corro-
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sion resistance of metallic surface comprising contacting with an autodeposition bath comprising a resin in uncured emulsion or dis- persion form and an autodeposi- tion activator until a layer of the resin of desired thickness is autodeposited on the metallic sur- face; rinsing with chromium-free aqueous solution comprising an anticorrosive effective amount of at least one water-soluble alka- line earth metal compound select- ed from the group consisting of nitrate, calcium chloride, calcium acetate, calcium formate, barium nitrate, barium acetate, and mag- nesium benzoate; and curing, wherein the layer of resin autode- posited on the metallic surface is not contacted with any chromium compound and is not rinsed with water alone after the rinsing step and before curing.
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TWO-COMPONENT COATING ing aromatically-bound isocyanate COMPOSITION groups and curing the composition. US. Patent 6,410,0&j. June 25,2002 M. Brahm, et al., assignors to Bayer, Leverlzusen, Germany AG A method for making a blister-free coating comprising applying a sub- stantially solvent-free binder com- position to a substrate, the solvent- free binder composition containing a polyisocyanate component with heteoallophanate groups and hav-
EmaUmB NICKEL-PIIUSPHUKUS
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L.L. Zhing, et al., assignors to Seagate Technology LLC, Scotts Valley, Calif: A method of manufacturing a magnetic recording medium, the
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method comprising electrolessly depositing an amorphous nickel- phosphorus coating on a nonmag- netic substrate employing a plat- ing bath containing aluminum and/or copper ions in an effective amount to achieve an as-deposit- ed average surface roughness less than 10A and a magnetic forma- tion temperature not less than 320 ; and cleaning the coating with an acidic agent having a pH less than 4 or an alkaline agent having a pH greater than 12 without any substantial depletion of nickel from the surface without lowering the magnetic transfor- mation temperature.
CATIONIC ELECTRODEPOSITION
COATING COMPOSITION
US. Patent 6,410,146. June 25,2002 S. Shirakawa, et al., assignors to Nippon Paint Co., Ltd., Osaka-fu, Japan A cationic electrodeposition coat- ing composition comprising a cationic group-containing epoxy- modified base resin and a blocked isocyanate curing agent, wherein the blocked isocyanate curing agent is obtained by reacting a polyisocyante compound with a terminal primary OH-containing propylene glycolmonoalkyl ether as a blocking agent.
LOW GLOSS COATING COMPOSITION
US. Patent 6,410,147. June 25,2002 D-Y Chung, et al., assignors to E.I. du Pont de Nemours and Co., Wilmington, Del.
A crosslinkable composition that produces a low gloss coating upon cure comprising a binder compo- nent, which comprises a combina- tion of at least two partially com- patible crosslinkable components and a crosslinking agent selected from the group consisting of monomeric melamine, polymeric melamine, polyisocyanate, and blocked polyisocyanate.
90
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SCRATCH RESISTANT COATING
MULTllAVER ENAMELS US. Patent 6,410,646. June 25,2002 U Rockrath, et al., assignors to BASF Coatings AG, Muenster- Hi&up, Germany A coating composition comprising at least one binder; at least one polyacrylate resin; a crosslinker consisting of a compound selected from the group consisting of free isocyanates, blocked isocyanates, triazine-based components, and mixtures; and wherein when a triazine-based component is pres- ent in the coating component, the polyacrylate resin further com- prises in its reaction product at least one ethylenically unsaturat- ed carboxylic acid.
COATING COMPOSITION
U.S. Patent 6,410,647. June 25, 2002 M. Yoshioka, et al., assignors to
Nippon Paint Co., Ltd., Osaka, Japan A clear coating composition comprising 10 to 70% by weight of an acrylic polycar- boxylic acid; 5 to 70% by weight of a polyester polycar- boxylic acid; and 10 to 80% by weight of a polyepoxide.
AQUEOUS PAINT
US. Patent 6,410,655. June 25,2002 M. Okubo, et al., assignors to Dai Nippon Tory0 Co., Ltd., Osaka, Japan A resin composition for an aque- ous paint comprising different phase structure emulsion parti- cles obtained by multistage emul- sion polymerization as a binder; wherein the different phase struc- ture emulsion particles have an outermost phase formed by an emulsion polymer of an ethylenic unsaturated monomer.
PATINAS & ANTIQUING SOLUTIONS
BROWN ANTIQUE VERDE GREEN/ For Solid & Plated TIFFANY GREEN Copper Brass. Old Green Look
BLACK ANTIQUE for Copper Brass.
For Brass & TURQUOISE BLUE Copper Alloys. For Copper Alloys.
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MST-ORVING WATERBORNE COATING COMPOSITION
US. Patent 6,413,011. July 2,2002 JJ Sobczah, et al., assignors to
Rohm and Hass Co., Philadelphia A method for preparing a fast- drying multicomponent water- borne coating on a surface of a substrate comprising separately applying component A and com- ponent B, either simultaneously, or nearly simultaneously, to the surface of the substrate, wherein component A comprises at least one water-insoluble absorber; and component B comprises a slow- drying aqueous binder composi- tion; and allowing the multicom- ponent waterborne coating to dry, wherein the absorber is selected from the group consisting of organic super absorbent poly- mers, ion-exchange resins, hollow sphere polymers. Molecular
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US. Patent 6,413,287. July 2,2002 L.L. Barber, Jr, assignor to 3M Innovative Properties Co., St. Paul, Minn. An integrally molded abrasive article comprising a base having a first side and a second side; and a plurality of bristles integrally molded with and extending from the first side of the base, wherein the base comprises a binder formed from a binder precursor matrix comprising at least two interactive components, which form a polyurethane/urea binder and at least a portion of the plu-
rality of bristles comprise a plu- rality of abrasive particles adhered within the binder such that the ratio of binder to abra- sive particles is at 1:3 by weight.
PLATING SYSTEM WITH REMOTE
SECONDARY ANODE FOR SEMI-
CONDUCTOR MANUFACTURING
US. Patent 6,413,390. July 2,2002 M. Q. Tran, assignor to Advanced Micro Devices, Inc., Sunnyvale, Calif: A plating system for a semicon- ductor wafer comprising a plating chamber; a plating solution reser- voir connected to the plating chamber; a circulating system for circulating plating solution between the plating chamber and the plating solution reservoir; an inert primary anode in the plat- ing chamber and connectible to a
source of positive voltage; a semi- conductor wafer connector in the plating chamber and connectible to connect the semiconductor wafer to a source of negative volt- age; and a consumable remote secondary anode in the plating solution reservoir and connectible to the source of positive voltage.
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