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:
Feb. 14, 1995
Filed:
Mar. 28, 1994
Applicant:
Inventor:
James K Kung, Lexington, MA (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429206 ; 429251 ; 429254 ; 429250 ;
Abstract
A wettable battery separator for alkaline batteries is formed of a microporous plastic sheet selected from porous films, fabrics and papers. The separator is impregnated with a resin which has one or more carboxyl groups which have been neutralized by a base so as to form a salt. The resin is present in an amount from about 0.0001 to 3% by weight of the separator. Alkali resistant fillers may also be included.