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. 09, 1991
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Charles M Lewis, Springfield, MO (US);
Nasser Pourahmady, Ridgeville, OH (US);
Assignee:
Dayco Products, Inc., Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528170 ; 2643281 ; 2643286 ; 2643288 ; 528184 ; 528288 ;
Abstract
A polyimide having a repeating unit of the formula (I), (II), or (III): ##STR1## where LG is a linking group and W is an oligomeric chain selected from the group consisting of polyether, a polythioether, a polyetherthioether, polycarbonyl, or polysulfonyl, or a copolymer thereof.