organic composite coated steel sheet
TRANSCRIPT
solution; applying an electrical potential so that the implant initially acts as a substrate cathode; periodically reversing the polarity of the electrical potential so that the im- plant alternates between cathodic polariza- tion and anodic polarization to deposit a gradient coating of calcium phosphate phases and metal oxide phases on the im- plant.
Filter Press Apparatus U.S. Patenf 5723,046. Mar. 3, 1996 0. Lucey, assignor to JWI Inc., Holland, Micb.
A drip tray lock mechanism for a filter press.
Selective Etching of Nickel-Iron Alloys U.S. Patent 5723,062. Mar. 3, 1998 K.L. Covert et a/., assignors to IBM Corp., Afmonk, N.Y.
An etchant for nickel-iron alloy but not copper, comprising ferric ammonium sul- fate and from 4.5 to IO molar acid, selected from the group consisting essentially of sulfuric acid, phosphoric acid, and mix- tures thereof.
Metal Coloring Process U.S. Patent 5,723,183. Mar. 3, 1996 FM. Williams, assignors to Birchwood Laboratories Inc., Eden Prairie, Minn.
A process for forming a coating on fer- rous metal substrates comprising cleaning; coating with a dicarboxylic acid in the presence of an accelerant; rinsing to re- move dicarboxylic acid residue; coloring by immersing in an aqueous solution con- sisting essentially of a reactive dye that produces a desired color at an appropriate pH and temperature.
Organic Composite Coated Steel Sheet U.S. Patent 5,723,210. Mar. 3, 1998 S. Sujita et al, assignors to Kawasaki Steel Corp. and Dai Nippon Totyo Co. Lid., Japan
An organic composite-coated steel sheet comprising a zinc-based plating layer com- posed of zinc or a zinc-based alloy adhered to a surface of the steel sheet; a chromate- silica film adhered to the resulting surface of the zinc-based plating layer containing 5 to 500 mg/m2 of chromium expressed as metallic Cr; and a resin coating film.
Photosensitive Layer Formed on Anodized Aluminum U.S. Patent 5,%?3,241. Mar. 3, 1996 H. Ueda, assignor to Minolta Co. Ltd., Osaka, Japan
A laminated photosensitive member comprising a charge transporting layer and an electrically conductive substrate with an anodized aiuminum layer on the surface comprising a porous layer having a thick- ness of 0.5 to 15 urn and a barrier layer having a thickness of 10 to 500 A and an impedance of SO to 250 K-ohm wherein the charge transporting layer and the charge generating layer are laminated on the sur- face of the substrate.
Analyzing Gold Electroplating Solutions for Arsenic(lll) U.S. Patent 5,723,339. Mar. 3, 1998 J.J. Konrad and R.A. Sinicki, assignors to IBM Corp., Armonk, N.Y
A method of analyzing for As(III) as AsO;’ ion in an Au(I) and Au(M) contain- ing electroplating solution comprising add- ing a sample of the electroplating solution to a buffered solution; adding a complexing
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METAL FINISHING . AUGUST 1998 87