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:
Mar. 03, 2026
Filed:
Dec. 01, 2020
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Tasuku Onodera, Tokyo, JP;
Yoshio Kobayashi, Tokyo, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
Provided is a compressor including a sliding material with the wear resistance improved. To solve this problem, a compressor () includes: a compression chamber () that is formed in a cylinder () and compresses gas; and a piston ringand a rider ringthat are in contact with the inner wall of the cylinderto form the compression chamber (). The piston ringand rider ringinclude: a resin member; and a metal particle that is located within the resin member and includes a surface layer containing an affinity portion having an affinity to the resin member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile