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:
Sep. 22, 2015
Filed:
Nov. 19, 2008
Applicants:
Richard Vicari, Pearland, TX (US);
Bret F. Hann, San Antonio, TX (US);
Inventors:
Richard Vicari, Pearland, TX (US);
Bret F. Hann, San Antonio, TX (US);
Assignee:
SEKISUI SPECIALTY CHEMICALS AMERICA, LLC, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/14 (2006.01); H01M 2/16 (2006.01); H01M 4/34 (2006.01); H01M 10/26 (2006.01); H01M 10/32 (2006.01); H01M 4/48 (2010.01);
U.S. Cl.
CPC ...
H01M 4/483 (2013.01); H01M 2/1653 (2013.01);
Abstract
A separator film for an electric battery is provided to substantially eliminate electric contact between an anode component and a cathode component. The film includes a vinyl alcohol copolymer with functional comonomer units such as sulfonic acid functionalized units or salts thereof. The films are desirable for use in battery separators because they exhibit superior resistance to degeneration by oxidation, enabling the manufacture of batteries with improved conductivity, longer discharge times, and longer cycle lives.