to prevent preferent ial copper growth in dense areas. After rinsing, the remaining copper of the copper film is electrochemi- cally deposited.

ELECTROPLATING METHGD

US. 2004118691 (Shipley Co. LLC) Kusaka, M.; Tsuchida, H. Electroplating method not espe- cially sui ted for the fi l l ing of vias in which a cur ren t is applied in a forward method for a set period of t ime and then reversed for a set period of time. This method uti l izes a rest t ime either before or after, or both before and af ter the reverse cur ren t period. This reverse pulse method can be used for copper deposition.

PROCESS FOR F O R M I N G CURED

GRADIENT COATING FILM A N D

MULTILAYeRED COATING FILM

C O N T A I N I N G THE S A M E

US. 2004118687 Muramoto, H.; Izumiya, K. A two-layer paint or resin elec- trophoretic coating system and process for forming a cured gra- dient coating film, comprising the steps of: Applying an aque- ous electrodeposi t ion coating composition comprising at least two resins and a curing agent, on an electr ical ly conductive substrate, heat ing an electrode- position coating film to form a layer separation, and then cur- ing the electrodeposit ion coat- ing film to form a cured gradient coating film; wherein the resins include one resin component consti tuting a resin layer (a) in direct contact wi th air before applying top coating and other resin component const i tut ing a resin layer (b) in direct contact with the electrically conductive substrate, and, wherein a solu- bi l i ty pa r ame te r (delta) of a resin component A and a solu-

bil i ty pa rame te r (deltab) of a resin component B have a spe- cific relationship.

TECHN|QUe$ FOR SE~$11NG

Cl lLOR|DE |ONS |N WET OR Di l ly

M E D | A

U.S. 2004118682 Cain, R.P.; Murray, G.M.; et al. Techniques for analysis of chlo- ride ion concentration in a medi- um allow measurements to be made in dry or alkaline media, or both. For alkaline conditions, a sensor includes a pair of elec- trodes and a polymer film imprinted for uptake of chloride ions under alkaline conditions. The film is deposited to be in con- tact with at least one electrode and the medium.

For dry conditions, a sensor includes a pair of electrodes and a conductive polymer film imprint- ed for uptake of chloride ions. The film is in contact with the pair of electrodes, and is positioned for contact with the medium. The electrical conductivity of the film depends on an amount of chloride ions taken up by the film. Some techniques allow chloride ion measurements over years at sen-

noco,p Strippable Plating Mask Kit

Clean, sharp, distinct stop off lines. Kit with i quart pot and 5 Ibs. of Therrno-Cote N 4 strippable coating. Cools fast to give you perfect mask. Non-Contaminat- ing. Peel of f and remelt for reuse. Write for details ai~d

12 Cork Hill Road ° P.O. Box 365 • Franklin, NJ 07416 Tel: 973-209-6210 • Fax: 973-209-6435

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sors embedded in concrete. Such measurements allow the determi- nation of the progress of rebar cor- rosion in concrete infrastructure.

~R@CES$ A ~ D SGLUTI@N FOR

~ R O V I D | N G A THmN ©ORRGS|G~

~ H I B I T | N G COAT|~G @N A

MeTALLiC SURFACI~

US. 2004118483 Cooper, C.; Deemer, M. Process for coating metallic sur- faces with a phosphate coating

Circle 040 on reader information card or go to www.thru.to/webconnect

December 2004 57