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:
Apr. 30, 2013
Filed:
Aug. 07, 2008
Applicants:
Yuko Higashijima, Nagoya, JP;
Ryouhei Hoshino, Anjo, JP;
Takuya Muranaka, Aichi-gun, JP;
Inventors:
Assignee:
Aisin Kako Kabushiki Kaisha, Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a wet friction material, inorganic filler of small particle size is added to fill clearances or space between fibers with the inorganic filler. The inorganic filler is attached to the fibers with each other to reinforce strength of the wet friction material when an impregnated resin is hardened. Absolute specific gravity of the inorganic filler is set at a fixed value so as to make its compounding quantity small, thereby assuring a pore diameter of a friction material substrate without filling pores of the friction material substrate with the inorganic filler.