Granted in the Metal Finishing Field Printed copies of patents are furnished by the Patent and Trademark Office for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231.

Go to www.metalfinishing.com for more patents.

HIGH-SPEED DEPOSITION OF ALUMINUM U.S. Patent 6,207,036. Mar. 27, 2001 H. deVries, assignor to Alumina1 Oberflachentechnik GmbH, Germany

An electrolyte for the high-speed deposition of aluminum on contin- uous products, which contain an organometallic aluminum com- plex.

ULTBAVlOLlEc BADlATlON CURING DMCE U.S. Patent 6,207,118. Mar. 27, 2001 T. J. Gaven et al., Summit, N. J.

A mobile ultraviolet radiation curing device.

COATING THERMOPLASTlC SUBSTRATES U.S. Patent 6,207,224. Mar. 27, 2001 J.W. O’Neil, assignor to E.I. du Pont de Nemours and Co., Wilmington, Del.

A process for coating a colored thermoplastic substrate having a surface with splay marks and sur- face blushing, which comprises applying a solvent-based coating composition to the substrate and curing at ambient temperature to 125°C to form a uniform smooth film of a degree sufficient to hide underlying splay marks and sur- face blushing.

TWO-COMPONENT STRIPPABLE COATING U.S. Patent 6,207,225. Mar. 27, 2001 H. Lemke and D. Hohnholz, assignors to Relius Coatings GmbH & Co., Oldenburg, Germany

A method for the surface coating of metal parts comprising apply- ing a solvent-free, two-compo-

nent, controlled-adhesion strip- pable coating.

METALLIC COATING MElHOD U.S. Patent 6,207,226. Mar. 27, 2001 H. Igarashi, assignor to Kansai Paint Co. Ltd., Hyogo-ken, Japan

A metallic coating method, which comprises applying a dispersion formed by dispersing aluminum flakes surface-treated with an al- kyl ester of phosphoric acid in an organic solvent onto an uncured coated surface of a paint-coated object, then applying onto the dis- persion-applied surface a clear paint, and thereafter simulta- neously curing these coating films under heating.

ONE-PACK COATING COMPOSITION U.S. Patent 6,207,235. Mar. 27, 2001 M. Ohsawa et al., assignors to Mazda Motor Corp., Hiroshima, Japan

A one-pack coating composition comprising an oligomer or poly- mer containing an acid anhydride group, a blocked hydroxyl group, and an epoxy group as indispens- able functional groups in the same or different molecules; a heat curing catalyst comprising a complex of an organ0 metallic compound and an electron-donat- ing compound or an onium salt; an ultraviolet absorber contain- ing a triazine or oxalic anilide; and a compound being either a hindered amine light stabilizer having a piperidine ring or a phe- nolic antioxidant.

COATING COMPOSlTlON U.S. Patent 6,207,236. Mar. 27, 2001 T. Araki et al., assignors to Daikin Industries Ltd., Osaka, Japan

A coating composition comprising a fluorine-containing ethylenic polymer, which contains a fluo- rine-containing ethylenic recur- ring unit having at least one of functional group selected from the group consisting of hydroxyl, car- boxyl, a carboxylic salt group and epoxy, a metal oxide sol, and a solvent.

NONWOVEN ABRASIVE MATERIAL ROLL U.S. Patent 6,207,246. Mar. 27, 2001 L.S. Moren et al., assignors to 3M Znnovative Properties Co., St. Paul, Minn.

An abrasive surface treatment material comprising a web of lofty nonwoven material including 1,000 grade and finer abrasive particles bonded thereto by a binder, wherein the abrasive par- ticle add-on weight is lo-33 grains per 24 in2, wherein the density of the surface treatment material is less than 0.6 g/in3, and wherein when tested according to the scratch test defined herein, provides an Ra of less than 10 microinches and a Bearing Ratio of from 15-50%.

CATHODE ELECTROCOATING COMPOSlTlON U.S. Patent 6,207,731. Mar. 27, 2001 A. Gum, assignor to E.Z. du Pont de Nemours and Co., Wilmington, Del.

A cathodic electrocoating compo- sition having improved appear-

124 Metal Finishing

ante, improved edge coverage and reduced craters comprising an aqueous carrier; a film forming binder dispersed in the carrier comprising an epoxy-amine ad- duct and a blocked polyisocyanate crosslinking agent; and an addi- tive comprising the reaction prod- uct of a polyoxy alkylene amine; a glycidoxy alkyl alkoxy silane; and a glycidyl compound selected from the group consisting of a glycidyl ester of a carboxylic acid and an alkyl glycidyl ether; which reac- tion product is hydrolyzed in the presence of acid and water to con- vert alkoxysilane moieties to sila- no1 moieties.

COMBINING POWDER COATINGS U.S. Patent 6,207,768. Mar. 27, 2001 Y. Sato et al., assignors to Kao Corp., Tokyo

A combination of powder coatings usable in a coating method com- prising mixing two or more pow- der coatings of which each color is different, wherein each of the powder coatings does not have thermosetting properties alone at a temperature of 250°C or less, each of the powder coatings com- prises a resin having two or more functional groups per molecule; each of the two or more powder coatings heat-cure when mixed with each other at a temperature of 250°C or less, wherein heat- curing is a result of two or more powder coatings reacting with each other, thereby providing a coating film having a homoge- neous hue.

ELECTROLESS NICKEL BATH U.S. Patent 6,048,585. Apr. 11, 2000 N.M. Martyak and J.E. McCaskie, assignors to Atotech Deutschland GmbH, Berlin

A method of removal of or- thophosphite ions from electroless nickel plating baths.

MECHOD FOR APPLYING CONVERSION COATINGS U.S. Patent 6,048,921. Apr. 11, 2000 R.A. White and L. Steinbrecher, assignors to Henkel Corp., Plymouth Meeting, Pa.

A method for dispensing an acidic conversion coating comprising in- troducing through a port in a res- ervoir chamber of a hand-held ap- plicator an aqueous conversion coating composition that exhibits a pH within the range of 1.5-4.5 and includes O.OOOl-3% by vol- ume of an acid stable fluorinated surfactant; and closing the port with an applicator wick, wherein the conversion coating composi- tion can be dispensed from the reservoir through the wick.

MULTIPLE-COLOR PAlNTlNG APPARATUS U.S. Patent 6,050,498. Apr. 18, 2000 S. Minoura and D. Nakazono, assignors to Honda Giken Kogyo KK, Tokyo

A multiple-color painting appara- tus comprising a plurality of paint tanks each to be filled with paint of a different color; a pump having an inlet side and an outlet side; a plurality of supply passages sev- erally connected for fluid commu- nication between the paint tanks and the inlet side of the pump; a paint gun; a delivery passage con- nected for fluid communication between the outlet side of the pump and the paint gun; wherein the supply passages are each ded- icated to one paint and the deliv- ery passage is common to all paints.

ROTARVSPRAYHEADCOATER US. Patent 6,050,499. Apr. 18, 2000 S. Takayama et al., assignors to ABB KK, Tokyo

A rotary atomizing head coating machine including a cover of cy- lindrical shape; an air motor pro- vided within the cover; a rota-

tional shaft provided axially in and rotated by said air motor; a rotary atomizing head; and a feed tube provided axially in the rota- tional shaft and having a fore end portion for spouting paint or sol- vent.

PLATING STRUCTURE FOR A PIN GRID ARRAY PACKAGE U.S. Patent 6,051,119. Apr. 18, 2000 P.F. Findeis et al., assignors to International Business Machines Corp., Armonk, N.Y., and General Wire & Stamping Co. Inc., Randolph, N. J.

A plating structure comprising a substrate having a plurality of pins to be plated; and a metallic plating screen having a plurality of apertures, wherein each of the apertures has at least two tabs spaced apart from each other and the metallic plating screen is placed over the pins so that at least two pins penetrate each ap- erture, each of the pins contacting a tab of the aperture.

ELECTROSTATIC COATING SYSTEM U.S. Patent 6,051,280. Apr. 18, 2000 K. Seitz et al., assignors to Wagner International AG, Alstatten, Switzerland

A method of controlling an elec- trostatic coating device, which discharges an electrostatically charged cloud of a coating me- dium to a workpiece comprising detecting the shape of the work- piece; and automatically adjust- ing a shape of the cloud of coating medium in accordance with the detected shape of the workpiece by controlling at least one of speed and the quantity of the coating medium discharged; and the shaping air flow forming an air coat around the cloud of coat- ing medium discharged by the coating device.

February 2002 125