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:
Nov. 29, 2022
Filed:
Feb. 26, 2020
Applicants:
Nsk-warner K.k., Tokyo, JP;
Sumitomo Bakelite Co., Ltd., Tokyo, JP;
Inventors:
Takuya Tsunemasu, Fukuroi, JP;
Takao Kunimi, Tokyo, JP;
Assignees:
NSK-Warner K.K., Tokyo, JP;
SUMITOMO BAKELITE CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 8/24 (2006.01); F16D 69/02 (2006.01); F16D 13/60 (2006.01);
U.S. Cl.
CPC ...
F16D 69/026 (2013.01); C08G 8/24 (2013.01); F16D 13/60 (2013.01); F16D 2200/006 (2013.01); F16D 2200/0056 (2013.01); F16D 2200/0091 (2013.01);
Abstract
A phenol resin for a wet friction material of the invention contains a resol-type phenol resin having, in one molecule, a structural unit A which is derived from a phenol compound having one phenolic hydroxyl group and a structural unit B which is derived from a polyfunctional phenol compound having two phenolic hydroxyl groups.