ducted in a vacuum, said processchambers including a sputterchamber for sputtering; and a de­gas chamber for degassing a sub­strate, said degas chamber beingprovided with a plurality of heatstages so as to simultaneouslyheat a plurality of substrates.

ROTOGRAVURE PLATING PROCESSU.S. Patent 5,925,231. July 20, 1999H.F. Metzger, Brookfield, Wis.

A method for electroplating a ro­togravure cylinder using ultra­sonic energy,

FORMING A HIDDENIDENTIFICATION USING POWDERCOATINGU.S. Patent 5,925,402. July 20, 1999W.E. Nacker and R.M. Didrick,

assignors to Morton InternationalInc., Chicago

A method of providing a hiddenidentification on a substrate com­prising forming a first patternedcoating on a substrate by applyinga layer of a coating powder se­lected from the group consistingof thermoplastic, thermoset, andUV-curable coating powders to asubstrate, subjecting selected pat­terned portions of the coatingpowder layer to a laser beam so asto generate sufficient heat to fusethe selected patterned portions inthe case of a thermoplastic coat­ing powder, sufficient heat to fuseand cure the selected patternedportions in the case of a thermosetcoating powder, and sufficient

heat and UV light to fuse and curea UV-curable coating powder; andremoving unfused powder; plusforming a second coating from acoating powder over the first pat­terned coating so as to cover thefirst patterned coating, the secondcoating being formed by applyinga coating powder layer of gener­ally uniform thickness over thesubstrate and then fusing or fus­ing and curing the coating powderlayer; the patterned coating beingsubsequently identified by remov­ing the second coating thereover.

ELECTROLESS PLATING PROCESSU.S. Patent .5,925,415. July 20, 1999J.L. Fry et al., assignors to TheUniversity of Toledo, Toledo, Ohio

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A method of electroless plating atleast one homogeneous metalcoating in a predetermined pat­tern on a substrate surface havingpendant hydroxy groups compris­ing reacting the pendant hydroxygroups of the substrate surfacewith a silyl hydride to form a sil­icon hydride bond directly on thesubstrate surface without any in­tervening bonds; immersing thesubstrate surface in a metal ionsolution to provide a monatomicmetal layer in a predeterminedpattern on the substrate surface;and immersing the activated sub­strate surface in a solution con­taining a chemical reducing agentand metal ions to build up at least

one homogeneous metal coatingdirectly only on the monatomicmetal layer.

ELECTROSTATIC POWDER COADNGOF WHEELSU.S. Patent 5,925,419. July 20, 1999K. Kukisaki et al., assignors toNihon Parherizing Co. Ltd., Tokyoand Nissan. Motor Co. Ltd.,Yokohama, Japan

An electrostatic powder coatingmethod for coating a wheel, com­prising electrostatically applyingpowder to the wheel from thefront side thereof and therebycoating the front side, duringwhich powder is adhered to thetapered surfaces of the bolt holes;

positioning a suction nozzle hav­ing a ring-shaped suction openingat the rear side of the wheel suchthat the suction opening simulta­neously covers all of the boltholes; and suctioning air simulta­neously through all the bolt holesthereby simultaneously with­drawing the powder adhered tothe tapered surfaces of the boltholes to eliminate the powder ad­hered to the tapered surfaces.

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