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. 18, 2025
Filed:
Jan. 28, 2020
Showa Denko Materials Co., Ltd., Tokyo, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
RESONAC CORPORATION, Tokyo, JP;
NISSAN MOTOR CO., LTD., Kanagawa, JP;
Abstract
To provide a friction material composition which provides a friction material having high friction coefficient during high speed and high temperature braking, high coefficient of static friction and excellent abrasion resistance at high temperature and causing little sticking due to rust, even when the composition includes no antimony element or no copper element, or includes less than 0.5% by mass of copper element if any, in other words even when having a composition environmentally less harmful or less harmful to the human body. More specifically the friction material composition includes a bonding material, an organic filler, an inorganic filler and a fiber substrate, wherein the friction material composition includes no copper element, or includes less than 0.5% by mass of copper element if any, includes no antimony element, includes 5% by mass or less of iron fiber, 1 to 5% by mass of zinc powder, 2.5 to 6% by mass of calcium hydroxide, 0.7 to 1.5% by mass of sodium carbonate and a silicone-containing phenolic resin.