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:
May. 18, 2021
Filed:
Jul. 23, 2018
Applicant:
Advics Co., Ltd., Kariya, JP;
Inventors:
Assignee:
ADVICS CO., LTD., Kariya, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16D 69/02 (2006.01); C09K 3/14 (2006.01); B29K 507/04 (2006.01);
U.S. Cl.
CPC ...
F16D 69/026 (2013.01); C09K 3/149 (2013.01); B29K 2507/04 (2013.01); F16D 2200/0069 (2013.01); F16D 2200/0073 (2013.01); Y10T 428/258 (2015.01);
Abstract
A friction material which comprises a fibrous base, a binder, a lubricating material, an organic filler, and an inorganic filler, the friction material having a copper element content of 0.5 wt % or less with respect to the whole friction material, wherein the lubricating material comprises graphite having an average particle diameter of 10.0 μm or smaller and the inorganic filler includes barium sulfate, which comprises small-diameter barium sulfate having an average particle diameter of 1.5 μm or smaller and a purity of 95.0% or higher.