NICKEL-PHOSPHORUS ALLOY COATINGS U.S. Patent 6,099,624. Aug. 8, 2000 N.M. Martyak, assignor to Elf Atochem North America Inc., Philadelphia

A composition of matter for produc- ing electrodeposited nickel-phos- phorus coatings, the composition being an aqueous sulfate-free electroplating bath comprising 150 to 300 g/L nickel alkane sul- fonate; 5 to 40 g/L phosphorous acid; 10 to 50 g/L phosphoric acid, and 5 to 25 g/L hypophosphorous acid; wherein the coating is to be electrodeposited upon a substrate while maintaining a current den- sity on the substrate of from 2 to 200 Afdm,.

PULSE PLATING PROCESS U.S. Patent 6,099,711. Aug. 8, 2000 W. Dahms et al., assignors to Atotech Deutschland GmbH, Berlin

A method for the electrolytic dep- osition of fine crystalline metal coatings with uniform distribu- tion of layer thicknesses and uni- form brightness, high fracture elongation and tensile strength even in places of high current density, by means of a pulse cur- rent method comprising a dura-

tion of cathodic or cathodic and anodic pulses of current or volt- age.

TIN-SILVER ALLOY ELECTROPLATING BATH U.S. Patent 6,099,713. Aug. 8, 2000 I. Yanada and M. Tsujimoto, assignors to C. Uyemura & Co., Ltd., Osaka, Japan

A tin-silver alloy electroplating process comprising dipping a workpiece to be plated in a tin- silver alloy electroplating bath containing a stannous salt, a sil- ver salt, and an acid selected from the group consisting of sulfuric acid, phosphoric acid, phosphonic acid, hydroxycarboxylic acid, al- kanesulfonic acid, and alkanosul- fonic acid, or a mixture thereof.

PASSIFICATION OF TIN SURFACES U.S. Patent 6,099,714. Aug. 8, 2000 J.W. Bibber, assignor to Sanchem Inc., Chicago

A method for electrocoating a tin or tin-plated article with a non- hexavalent trivalent chromium oxide and/or trivalent chromium hydroxide protective coating com- prising cleaning to provide a clean tin or tin-plated article; placing the clean article as a cathode in

an electrolytic trivalent chro- mium electrolyte, which is a triva- lent chromium composition free of chromium complexing agents and having a pH of 2.0 to 3.0; and applying electrical current to the cathode to provide a trivalent chromium oxide and/or hydroxide protective coated.

METHOD FOR APPLYING POWDER PAINT U.S. Patent 6,099,898. Aug. 8, 2000 J.R. Joyce and J.C. Johnson, assignors to Haden Inc., Auburn Hills, Mich.

A method of painting a series of articles comprising applying at least one layer of powder paint containing reclaimed powder paint to one of the articles and collecting the powder paint not deposited on the article in a re- claim system; applying to the ar- ticle an outer layer of color spe- cific powder paint, having a color different from that of the powder paint containing reclaimed pow- der paint, the outer layer being applied without first heating the powder paint containing re- claimed powder paint of the at least one layer, and collecting the

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