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T. Yoda et al., assignors to Shinko Electric Industries Co., Ltd., Naganoken, and C. Uyemura & Co. Ltd., Osaka, both of Japan A method of nickel or nickel alloy electroplating a conductor partially masked with an organic polymeric resist layer comprising dipping the conductor partially masked with an organic polymeric resist layer in an electroplating bath comprising a water-soluble cobalt salt in a concentration of 5 to 40 gIL on the basis of nickel ion equivalent and an electrically conductive salt containing at least one cation selected from the group consisting of an ammonium ion, magnesium ion, calcium ion, aluminum ion, and barium ion in a concentration of 150 to 500 gIL, said electrical conductive salt substantially not containing a sodium ion and a potassium ion as cations, and the electroplating bath having a pH of 3.5 to 4; and applying a current using the conductor as a cathode; whereby a portion of the conductor other than the area masked with the resist layer is formed with a nickel or nickelcobalt alloy plating film without floating or peeling of the resist layer. SELECTIVE COPPER DEPOSlnON METHOD US. Patent 5,985,125. Nov. 16, 1999 J.J. Kim, assignor to LG Semicon Co., Ltd., Cheongju, Rep. of Korea A selective copper deposition method for forming a wiring. PLAnNG WORKPIECE HOLDER US. Patent 5,985,126. Nov. 16, 1999 M.C. Bleck et al., assignors to Semi- tool Inc., Kalispell, Mont. A semiconductor plating system workpiece support having workpiece engaging electrodes with distal contact part and dielectric cover. TREAnNG PAINT SPRAYBOOTH WATER US. Patent 5,985,154. Nov. 16, 1999 H.E. Agree, assignors to BetzDearborn Inc., Trevose, Pa. A method for detackifying and dispersing solventborne paints in paint spraybooth water comprising adding an effective amount of an aqueous composition comprising a water-soluble cationic polymer having a molecular weight of 1,000 to 600,000, a nonionic sur- RECOVERY ENGINEERING & SALES COMPANY P.O. Box 297, Arvada, Colorado 80001-0297 Phone: (303) 292-5702 • Fax: (303) 292-5717 www.reasco.com HEAVY METAL RECOVERY Purify ¢=> Recycle CrPur Chromic Acid Purification REASCO Modular Ion Exchange • Heavy Metal Recovery • Rinse Water Recovery • 8ath Purification • Effluent Polishing • 0.1. Water ADVANTAGES • Lower Power Use r------ ----, . Fewer Rejects • Shorter Plating Time • Stabilized Bath • Reduced Liability • Bath Life Extended Virtually Forever • Minimal Operating Requirements For Information On Design, Sales, Or Possible Representation, Contact: Circle 087 on reader information card Circle 059 on reader information card 100 Metal Finishing

Plating workpiece holder

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T. Yoda et al., assignors to ShinkoElectric Industries Co., Ltd.,Naganoken, and C. Uyemura & Co.Ltd., Osaka, both of Japan

A method of nickel or nickel alloyelectroplating a conductor partiallymasked with an organic polymericresist layer comprising dipping theconductor partially masked withan organic polymeric resist layer inan electroplating bath comprising awater-soluble cobalt salt in a concentration of 5 to 40 gIL on thebasis of nickel ion equivalent andan electrically conductive salt containing at least one cation selectedfrom the group consisting ofan ammonium ion, magnesium ion, calcium ion, aluminum ion, and barium ion in a concentration of 150 to500 gIL, said electrical conductive

salt substantially not containing asodium ion and a potassium ion ascations, and the electroplating bathhaving a pH of 3.5 to 4; and applying a current using the conductoras a cathode; whereby a portion ofthe conductor other than the areamasked with the resist layer isformed with a nickel or nickelcobalt alloy plating film withoutfloating or peeling of the resistlayer.

SELECTIVE COPPER DEPOSlnONMETHODUS. Patent 5,985,125. Nov. 16, 1999J.J. Kim, assignor to LG SemiconCo., Ltd., Cheongju, Rep. of Korea

A selective copper depositionmethod for forming a wiring.

PLAnNG WORKPIECE HOLDER

US. Patent 5,985,126. Nov. 16, 1999M.C. Bleck et al., assignors to Semitool Inc., Kalispell, Mont.

A semiconductor plating systemworkpiece support having workpiece engaging electrodes with distal contact part and dielectric cover.

TREAnNG PAINT SPRAYBOOTHWATERUS. Patent 5,985,154. Nov. 16, 1999H.E. Agree, assignors toBetzDearborn Inc., Trevose, Pa.

A method for detackifying anddispersing solventborne paints inpaint spraybooth water comprising adding an effective amount ofan aqueous composition comprising a water-soluble cationic polymer having a molecular weight of1,000 to 600,000, a nonionic sur-

RECOVERY ENGINEERING & SALES COMPANYP.O. Box 297, Arvada, Colorado 80001-0297Phone: (303) 292-5702 • Fax: (303) 292-5717

www.reasco.com

HEAVY METAL RECOVERYPurify ¢=> Recycle

CrPurChromic Acid Purification

REASCOModular Ion Exchange

• Heavy Metal Recovery• Rinse Water Recovery• 8ath Purification• Effluent Polishing• 0.1. Water

ADVANTAGES

• Lower Power User------ ----, . Fewer Rejects

• Shorter Plating Time• Stabilized Bath• Reduced Liability• Bath Life Extended

Virtually Forever• Minimal Operating

Requirements

For InformationOn Design,Sales, Or PossibleRepresentation,Contact: