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:
Aug. 09, 1994
Filed:
Jul. 20, 1993
Applicant:
Inventors:
David Zuckerbrod, Baltimore, MD (US);
Richard T Giovannoni, Columbia, MD (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429252 ; 429136 ; 429254 ;
Abstract
A thin microporous sheet product useful as a battery separator composed of a highly filled polymeric matrix having a porous support sheet encapsulated between the sheet product's first and second major surfaces and to a process of forming the sheet product.