IP Library › Granted Patent US 6,689,501
Granted Patent Utility
US 6,689,501 · Confirmation No. 4435

COMPOSITE ION EXCHANGE MEMBRANE FOR USE IN A FUEL CELL

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2003-11-18 IFEE Issue Fee Payment (PTO-85B) 2 View
2001-05-25 TRNA Transmittal of New Application 1 View
2001-05-25 SPEC Specification 24 View
2001-05-25 CLM Claims 4 View
2001-05-25 ABST Abstract 1 View
2001-05-25 DRW Drawings-only black and white line drawings 8 View
2001-05-25 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,689,501
App. No.
09/866,387
Filed
2001-05-25
Granted
2004-02-10
Pub. No.
US20030059657A1
Art Unit
1745
PTA
0 days