IP Library › Granted Patent US 6,646,418
Granted Patent Utility
US 6,646,418 · Confirmation No. 2408

METHOD AND APPARATUS FOR FUEL CELL PROTECTION

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2014-07-24 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2011-03-04 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2003-08-11 IFEE Issue Fee Payment (PTO-85B) 1 View
2002-07-24 TRNA Transmittal of New Application 2 View
2002-07-24 ADS Application Data Sheet 1 View
2002-07-24 SPEC Specification 8 View
2002-07-24 CLM Claims 12 View
2002-07-24 ABST Abstract 1 View
2002-07-24 DRW Drawings-only black and white line drawings 7 View
2002-07-24 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,646,418
App. No.
10/202,594
Filed
2002-07-24
Granted
2003-11-11
Art Unit
2838
PTA
0 days