logo

For the Inventor, By the Inventor

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.:

US 4975337 B1

PDFFull Text
Date of Patent:
Dec. 04, 1990

Filed:

May. 09, 1989

Multi-layer corrosion resistant coating for fasteners and method of

Applicant:
Inventors:

Jacob Hyner, Waterbury, CT (US);

Steven Gradowski, Torrington, CT (US);

Assignee:

Whyco Chromium Company, Inc., Thomaston, CT (US);

Attorney:

DeLio & Associates

Primary Examiner:

John F Niebling

Assistant Examiner:

William T Leader

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.

Find Patent Forward Citations

Hyner, Jacob. (1990). Multi-layer corrosion resistant coating for fasteners and method of (U.S. Patent No. 4975337). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4975337

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…