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. 04, 2008
Filed:
May. 21, 2004
Manabu Ono, Hitachi, JP;
Teruyuki Nagayoshi, Hitachi, JP;
Mitsuhiro Inoue, Tokyo, JP;
Hiroki Morozumi, Isehara, JP;
Takahiro Mibe, Yamato, JP;
Yukio Takai, Tochigi, JP;
Manabu Ono, Hitachi, JP;
Teruyuki Nagayoshi, Hitachi, JP;
Mitsuhiro Inoue, Tokyo, JP;
Hiroki Morozumi, Isehara, JP;
Takahiro Mibe, Yamato, JP;
Yukio Takai, Tochigi, JP;
Hitachi Chemical Co., Ltd., Tokyo, JP;
Nissan Motor Co., Ltd., Yokahama-Shi, JP;
Abstract
There are disclosed a friction material composition which comprises a fibrous material except for asbestos, an inorganic friction regulator, an organic friction regulator and a binder, part of the inorganic friction regulator is α alumina and γ alumina in combination, a weight ratio of the α alumina and the γ alumina, α alumina:γ alumina, is in the range of 1:20 to 1:5, and part or whole part of the binder is a silicon-containing phenol resin, and a friction material obtained by molding the friction material composition under heating and pressure.