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:
Aug. 20, 2002
Filed:
Mar. 07, 2000
Applicant:
Inventors:
Hermann Schilling, Weinheim, DE;
Eberhard Bock, Mörlenbach, DE;
Günter Hofmann, Ladenburg, DE;
Assignee:
Firma Carl Freudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/08 ;
U.S. Cl.
CPC ...
H01M 2/08 ;
Abstract
A method and tool for producing bipolar plates having liquid channels and gas channels, and having sealing elements made of polymer material for fuel cells. The bipolar plates are stamped, i.e., liquid and gas channels are impressed into the bipolar plates, and sealing elements are applied to the bipolar plates in one tool in two steps directly following each other.