Patent · US Expired

Method and tool for producing bipolar plates

US6436568B1 · kind B1 · utility

9Cited by

3References

14Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Hermann Schilling · Weinheim, DE
Eberhard Bock · Prüm, DE
Gunter A. Hofmann · San Diego, US

Key dates

Filing date	Mar 7, 2000
Grant date	Aug 20, 2002
Priority date	—
Expiry date	Mar 7, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/4911
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.