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. 02, 1993
Filed:
May. 21, 1992
Applicant:
Inventors:
Taizo Nagahiro, Tokyo, JP;
Noboru Umemoto, Mie, JP;
Assignees:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
NTN-Rulon Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
524425 ; 524514 ;
Abstract
A polyimide-based friction material which is excellent in heat resistance, abrasion resistance, stability of friction coefficient, can be readily obtained by molding, and is comprised of: