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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