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. 10, 1985
Filed:
Feb. 27, 1985
Applicant:
Inventors:
Assignee:
Nippon Piston Ring Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F02F / ;
U.S. Cl.
CPC ...
277216 ; 277224 ; 2772 / ;
Abstract
A piston ring with a nitriding layer on entire surfaces thereof except an outer peripheral surface, and a plating or a spraying layer on the outer peripheral surface of the piston ring.
Tsuchiya, Takeshi. (1985). Nitrided piston ring with outer layer on surface (U.S. Patent No. 4557492). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4557492
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile