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. 12, 1996
Filed:
May. 16, 1995
Applicant:
Inventors:
Assignee:
Ballard Power Systems Inc., North Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08F / ;
U.S. Cl.
CPC ...
521 27 ; 521 32 ; 521 33 ; 521 37 ; 526242 ; 526247 ; 526248 ; 526249 ; 526291 ; 5262928 ; 5262929 ; 52629295 ; 526243 ;
Abstract
Polymeric compositions are derived from copolymers of .alpha.,.beta., .beta.-trifluorostyrene with a variety of substituted .alpha.,.beta.,.beta.-trifluorostyrenes. These compositions are suitable for use as membranes, particularly as ion-exchange membranes, and most particularly as solid polymer electrolytes in electrochemical applications, such as, for example, electrochemical fuel cells.