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. 28, 2000
Filed:
Jul. 16, 1997
Applicant:
Inventors:
Frank J Onorato, Phillipsburg, NJ (US);
Michael J Sansone, Berkeley Heights, NJ (US);
Dai W Kim, Chatham, NJ (US);
Stuart M French, Chatham, NJ (US);
Faruq Marikar, Westfield, NJ (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
429188 ; 429 33 ; 429188 ; 429204 ; 429207 ;
Abstract
A method for producing polybenzimidazole (PBI) fabrics for use as fuel cell or battery electrolytes by soaking a sulfonated or non-sulfonated PBI fabric in an acid solution, whereby the fibers of the fabric become swollen with the acid solution; and drying the fabric to remove residual water or methanol and concentrating the acid.