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. 23, 2021
Filed:
Aug. 21, 2018
Applicant:
Showa Denko Materials Co., Ltd., Tokyo, JP;
Inventor:
Masamichi Mitsumoto, Tokyo, JP;
Assignee:
SHOWA DENKO MATERIALS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 69/02 (2006.01); F16D 65/18 (2006.01); F16D 69/00 (2006.01);
U.S. Cl.
CPC ...
F16D 69/028 (2013.01); F16D 65/18 (2013.01); F16D 69/026 (2013.01); F16D 2069/001 (2013.01); F16D 2200/003 (2013.01); F16D 2200/0008 (2013.01); F16D 2200/0043 (2013.01); F16D 2200/0065 (2013.01); F16D 2200/0086 (2013.01);
Abstract
The present invention is concerned with a frictional material composition not containing copper as an element or having the content of copper of 0.5 mass % or less, the composition containing