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:
Jan. 07, 1997
Filed:
Apr. 13, 1993
Applicant:
Inventors:
Peter J Degen, Huntington, NY (US);
Joseph Y Lee, South Setauket, NY (US);
Assignee:
Pall Corporation, East Hills, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429144 ; 429254 ; 428507 ;
Abstract
A method for making an electrolytically conductive battery separator polyethylene film for alkaline battery applications is disclosed which comprises carrying out the grafting reaction in an environment free of air and comprising a pressurized inert gas blanket. The resulting lots of polyethylene film are capable of being made with the range of electrolytic resistance values required for a variety of alkaline battery applications, while exhibiting highly uniform electrolytic resistance characteristics.