CHROMAft....PRoncmVlCOATINeU.S. Patent 5,866,652. Feb. 2, 1999H.E. Hager et al., assignors to TheBoeing Co., SeattleA coating on a metallic skin of anaircraft comprising a continuousphase of a composition selectedfrom the group consisting of or­ganic polymers and sol-gels; and amixture of chromate-free salts dis­persed throughout the continuousphase, the mixture comprising asalt selected from the group con­sisting of carboxylate salts of rareearth metals and vanadate salts ofalkali or alkali earth metals; and aborate salt of an alkali earth metal.

PRIMO COMPOSITIONU.S. Patent 5,866,657. Feb. 2,

1999Y. Tominaga et al., assignors toTakeda Chemical Industries Ltd.,Osaka, JapanA primer composition comprisinga modified polyisocyanate ob­tained by reaction of polyisocya­nate; an emulsifying agent havingan active hydrogen group re­actable to an isocyanate group;and a silane coupling agent hav­ing an active hydrogen group re­actable to an isocyanate group;and a core shell emulsion havinga core layer of a rubbery polymerand a shell layer of a glassy poly­mer and having an active hydro­gen group reactable to an isocya­nate group in the core layerand/or the shell layer.

CU••LAnD ..lIAS.". TOOL

u.s. Patent 5,868,125. Feb. 9, 1999M. Maoujoud, assignor to NortonCo., Worcester, Mass.An abrasive segment having an op­erative perimeter comprising alength along the operative perime­ter; an inner face separated by asegment width from an outer facesubstantially parallel to the innerface to define sides of the abrasivesegment along the operative perim­eter; a vein comprising a primaryabrasive and a first bond material;and a plurality of separated abra­sive regions comprising a secondbond material, said regions beingoriented between the inner andouter faces and the vein.

PAINT DRYI.G fUlUIACIU.S. Patent 5,868,562. Feb. 9, 1999

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M. Watanabe et ai., assignors toKaikisha Ltd., TokyoA paint drying furnace compris­ing interior circulating gas pas­sages for withdrawing furnace in­terior gases from the furnaceinterior and returning the with­drawn gases to the furnace inte­rior; a fresh air passage connectedto the furnace interior circulatinggas passages for mixing fresh airinto the gases circulating throughthe furnace interior circulatinggas passages; and a combustion­type heating device for heatingthe gases returned from the fur­nace interior circulating gas pas­sage to the furnace interiors,thereby to heat the fU1'I1uce inte­riors, wherein the ('ombustion­type heating device is arranged on

the fresh air passage upstream ofa connection to the furnace inte­rior circulating gas passages forheating passing fresh air.

MIIASIVI COMPOSI'I'IONU.S. Patent 5,868,604. Feb. 9, 1999T. Atsugi et al., assignors to KaoCorp., TokyoA process for producing a sub­strate comprising abrading a sur­face of the substrate with an abra­sive composition, which comprisesone or more abrasives; one ormore abrasion accelerators; andwater, and wherein the abrasivesconsist essentially of intermedi­ate alumina particles having amean particle size of primary par­ticles of 40 nm or less and com-

prise an abrasive effectiveamount of at least one memberselected from the group consistingof-y and O.

IN-SITU POLISHING PAD PLATN'"COII'I'IIOLU.S. Patent 5,868,605. Feb. 9, 1999J.V. Cesna, assignor to SpeedfamCorp., Des Plaines, Ill.A method ofpolishing a workpiecewith a rotating polishing wheelhaving a polishing pad thereon toremove irregularities from thesurface being polished, the polish­ing pad having an annular shapewith radially inner and outer cir­cular edges.

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