Global Patent Index - EP 1129500 A4

EP 1129500 A4 2007-10-17 - FUEL CELL MEMBRANE HUMIDIFICATION

Title (en)

FUEL CELL MEMBRANE HUMIDIFICATION

Title (de)

BEFEUCHTUNG EINER BRENNSTOFFZELLENMEMBRAN

Title (fr)

HUMIDIFICATION DE MEMBRANE DE PILE A COMBUSTIBLE

Publication

EP 1129500 A4 (EN)

Application

EP 98944427 A

Priority

US 9802895 W

Abstract (en)

[origin: WO0025377A1] A polymer electrolyte membrane fuel cell assembly (10) has an anode side (12) and a cathode side (14) separated by the membrane (16) and generating electrical current by electrochemical reactions between a fuel gas and an oxidant. The anode side (12) comprises a hydrophobic gas diffusion backing (24) contacting one side of the membrane (16) and having hydrophilic areas therein for providing liquid water directly to the one side of the membrane (16) through the hydrophilic areas of the gas diffusion backing (24). In a preferred embodiment, the hydrophilic areas of the gas diffusion backing (24) are formed by sewing a hydrophilic thread (34) through the gas diffusion backing (24).

IPC 8 full level (invention and additional information)

H01M 4/86 (2006.01); H01M 8/02 (2006.01); H01M 8/04 (2006.01); H01M 8/10 (2006.01)

CPC (invention and additional information)

H01M 8/0241 (2013.01); H01M 8/0247 (2013.01); H01M 8/04149 (2013.01); H01M 8/04171 (2013.01); H01M 8/1007 (2013.01); H01M 8/0254 (2013.01); H01M 2008/1095 (2013.01); H01M 2300/0082 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0025377 A1 20000504; AU 9196698 A 20000515; CA 2348789 A1 20000504; EP 1129500 A1 20010905; EP 1129500 A4 20071017

INPADOC legal status


2008-07-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20071129

2007-10-17 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20070830

2007-10-17 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: H01M 4/86 20060101AFI20000510BHEP

2007-10-17 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: H01M 8/02 20060101ALI20070824BHEP

2007-10-17 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: H01M 8/04 20060101ALI20070824BHEP

2001-09-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010405

2001-09-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE