The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 1990
Filed:
May. 09, 1989
Applicant:
Inventors:
Jacob Hyner, Waterbury, CT (US);
Steven Gradowski, Torrington, CT (US);
Assignee:
Whyco Chromium Company, Inc., Thomaston, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; B32B / ;
U.S. Cl.
CPC ...
428648 ; 204 381 ; 204 387 ; 204 40 ; 204 41 ; 427406 ; 428658 ; 428667 ; 428674 ; 428675 ; 428679 ; 428935 ;
Abstract
A corrosion resistant coating and process comprises the following layers applied in sequence over a ferrous metal substrate: a micro-throwing nickel-zinc alloy plating; an optional galvanically protective zinc metal plating; a zinc-nickel alloy plating containing 5 to 30 weight percent nickel; and an organic coating such as paint. In place of the organic coating there may be utilized sequential layers of copper, nickel and chromium or chromium-substitute plating. The coating is preferably used with steel drill screw fasteners.