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:
Feb. 14, 1978
Filed:
Aug. 27, 1976
Applicant:
Inventors:
Assignee:
Nippon Steel Corporation, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; F16B / ;
U.S. Cl.
CPC ...
428422 ; 85 / ; 106 14 ; 148 / ; 148-616 ; 428457 ; 428461 ; 428469 ; 428411 ; 428543 ;
Abstract
A bolt, nut and washer is first coated with an under-coating consisting of metal phosphate, and is then coated with a second or top coating consisting of a chromium compound and one or more of a metal salt of higher fatty acid, polyolefin and polyethylene tetrafluoride dissolved or dispersed in a vehicle. The composite coating improves the corrosion resisting and lubricating properties of bolts, nuts and washers coated therewith, and also serves as an excellent base for paints.