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:
Jun. 18, 2002
Filed:
Apr. 02, 1999
Applicant:
Inventor:
Purushothama Rao, Aurora, IL (US);
Assignee:
GNB Technologies, Inc., Mendota Heights, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/16 ;
U.S. Cl.
CPC ...
H01M 2/16 ;
Abstract
A sealed lead-acid cell utilizes a separator made with modified plastic microfibers having a contact angle of no more than 1.5° to the sulfuric acid electrolyte used and having a diameter of 1.1 to 5.0&mgr;, the separator having a porosity of 87 to 94%, a surface area of 1.0 to 2.2 meters /gm., and a maximum pore diameter of 8 to 20&mgr; and a mean pore diameter of 1.2 to 5.0&mgr;.