surfaces of the permanent magnet, and a magnetic fluid injected between one of the inner peripheral surface and outer periph- eral surface of the magnetic fluid holding means, and a magnetic body opposed to it, wherein the magnetic fluid holding means is electroplated with a metal having a con- siderably smaller ionization tendency to the magnetic body to form a ground work plated layer, and then the magnetic fluid holding means is nonelectrode plated to form a nonelectrode plated layer on the surface of the groundwork plated layer and the surface of the permanent magnet.

Sand Blast Nozzle U.S. Patent 5,536,200. July 16, 1996 K.H. Kiess, Muelheim/Ruhr, Germany

A nozzle for a sand blaster for a dust- free blasting of planar surfaces with a blast material.

Alumina Abrasive Wheel U.S. Patent 5,536,283. July 16, 1996 D.A. Sheldon and R.S. Lundberg, assignors to Norton Co., Worcester, Mass.

An abrasive grinding wheel comprising alumina abrasive and a vitreous bond

wherein the vitreous bond after firing com- prises greater than 47% SiO2, less than 16% A1203, 0.05 to 2.5% K20, 7 to 11% Na20, 2.0 to 10.0% Li20 and 9 to 16% B203, and wherein the abrasive grinding wheel is substantially free of sol gel alu- mina abrasive.

Method of Phosphating Mixed Metal Surfaces U.S. Patent 5,536,336. July 16, 1996 M. Nakatsukasa and L Kawasaki, assignors to Nippon Paint Co. Ltd., Osaka, Japan

A phosphating method of conversion- treating metal surfaces of a combination of iron, steel, and/or galvanized steel and an aluminum alloy with a phosphate solution.

Galvanizing Magazine U.S. Patent 5,536,377. July 16, 1996 II/I. Hiermaier et aL, assignors to MTU Motoren- und Turbinen-Union, Munich, and BL Produktions GmbH, Tittling, both of Germany

A magazine having a longitudinal cen- tral axis for holding parts to be galvanized or plated, comprising a plurality of elec- trodes, each electrode comprising recepta- cles uniformly spaced from each other

along the respective electrode for holding parts with an electrical contact between parts and the respective electrode, and at least one magnet for holding parts in the receptacles so that a part surface to be galvanized or coated faces outwardly from the respective receptacle.

Sputtering Target Assembly U.S. Patent 5,536,380. July 16, 1996 B. Ocker and R. Hinterschuster, assignors to Leybold AG, Hanau, Germany

A large area sputter cathode having floating target segments.

Sputtering Device U.S, Patent 5,536,381. July 16, 1996 J-H. Lee, assignor to Samsung Electronics Co. Ltd., Suwon, Rep. of Korea

A sputtering device comprising a sput- tering chamber; a first electrode, which supports a substrate and is used as an elec- trode within the sputtering chamber; a tar- get composed of a source material to be sputtered towards the first electrode; a sec- ond electrode attached to the target; a shield, which is insulated from the second electrode and attached beneath the target;

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and a grating set, which is attached to the shield, for changing the paths of the sput- tered particles.

Electroplating a Nonconductive Substrate U,S. Patent 5,536,386. July 16, 1996 D. Ferrier et al., assignors to MacDermid Inc., Waterburg, Conn.

A process for electroplating a conduc- tive metal layer onto the surface of a non- conductive material comprising contacting with a liquid carbon dispersion; separating substantially all of the dispersing medium from the carbon particles; and electroplat- ing a conductive metal layer over the de- posited carbon layer and nonconductive surface.

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Nonabrasive Cleaning Composition U.S. Patent 5,536,439. July 16, 1996 R.H. Harbin, assignor to Gage Products Co., Femdale, Mich.

A cleaning composition for removing paint deposits, consisting essentially of 20- 80% of a solution of 2-30% of an alkali metal hydroxide dissolved in a glycol ether selected from the group consisting of an ether of propylene glycol and an ether of ethylene glycol; 80-20% of an organic sol- vent selected from the group consisting of: cyclohexanone, methyl isobutyl ketone, isobutyl isobutyrate, xylene, toluene and mixtures thereof; said composition being essentially free of water.

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Electroetch Tool Nozzle U.S. Patent 5,536,388. July 16, 1996 T.E. Dinan et al., assignors to IBM Corp., Armonk, N.Y.

A method of electroetching a vertically oriented workpiece by moving a nozzle vertically with respect to the workpiece, the nozzle having a side proximate the workpiece being a cathode, comprising creating a moving cfiannel of electrolyte solution issuing from the nozzle and im- pinging directly against the workpiece; and damming the flow of the electrolyte solu- tion in a vertical direction.

Process for Painting Polyvinyl Chloride U.S. Patent 5,536,532. July 16, 1996 R.E. Oaks, Canfield, Ohio

A method of painting an article, includ- ing selecting a substrate having a polyvinyl chloride surface normally impervious to the adherence of a paint film; wetting the p01yvinyl chloride surface with a liquid lacquer retarder consisting essentially of toluene, n-butyl acetate, 2-butoxyethyl ac-

etate, and 1-methoxy-2-propanol acetate in an amount to form a thin film under an applied pressure; allowing the liquid lac- quer retarder to react with the polyvinyl chloride surface; applying a paint film to the reacted surface of the polyvinyl chlo- ride surface; and allowing the paint film to dry while the residual of the liquid lacquer retarder vaporizes.

Cathodic Electrocoat Compositions &S. Patent 5,536,776. July 16, 1996 C.W. Carpenter et al., assignors to BASF Corp., Southfield, Mich.

A dispersant compound, comprising an acrylic backbone having a pigment-interac- tive substituent and a stabilizing substitu- ent, wherein the pigment-interactive sub- stituent has at least one primary amine group, and the stabilizing substituent com- prises an alkoxy-terminated polyalkylene oxide structure.

Powder Coating Composition U.S. Patent 5,536,785. July 16, 1996 R.J. Foukes and C.A. Stants, assignors to BASF Corp., Southfield, Mich.

A method of coating a substrate, com- prising spraying onto adjacent or overlap- ping areas a first thermosetting powder coating composition that is resistant to in- compatibility defects, comprising solid par- ticulates of a uniform mixture of a polyes- ter resin having an average of two or more carboxyl groups, a first crosslinker that is reactive toward the carboxyl groups of the polyester resin, 1-20% of a first acrylic copolymer having reactive functionality,

M E T A L F IN ISHING • M A R C H 1997