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:
Apr. 10, 2007
Filed:
May. 13, 2003
Applicants:
Shuguang Cao, San Jose, CA (US);
Helen Xu, Sunnyvale, CA (US);
Thomas Jeanes, Foster City, CA (US);
Kie Hyun Nam, Palto Alto, CA (US);
Jian Ping Chen, Palo Alto, CA (US);
David Olmeijer, San Francisco, CA (US);
Inventors:
Shuguang Cao, San Jose, CA (US);
Helen Xu, Sunnyvale, CA (US);
Thomas Jeanes, Foster City, CA (US);
Kie Hyun Nam, Palto Alto, CA (US);
Jian Ping Chen, Palo Alto, CA (US);
David Olmeijer, San Francisco, CA (US);
Assignee:
Polyfuel, Inc., Mountain View, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 116/36 (2006.01); C08F 16/36 (2006.01); C08F 216/36 (2006.01); H01M 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention relates to sulfonated copolymers which are useful in forming polymer electrolyte membranes used in fuel cells.