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. 17, 2004
Filed:
Oct. 12, 2001
Applicant:
Inventors:
Robert A. Nark, Charlotte, NC (US);
Ronald W. Call, Rock Hill, SC (US);
Donald K. Simmons, Charlotte, NC (US);
Mark W. Ferebee, Charlotte, NC (US);
Assignee:
Celgard Inc., Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 ;
U.S. Cl.
CPC ...
H01M 2/16 ;
Abstract
A method for removing a pin from a battery assembly by the step of providing a separator comprising: a microporous membrane having an exterior surface portion of polypropylene, the polypropylene including at least 50 ppm of metallic stearate, preferably calcium stearate Static and being adapted to exhibit a pin removal force ≦7100 g.