IP Library › Granted Patent US 6,789,421
Granted Patent Utility
US 6,789,421 · Confirmation No. 7567

DENSITY-BASED FUEL INDICATOR SYSTEM FOR FUEL CELLS

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2014-08-06 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-08-06 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-07-18 PA.. Power of Attorney 1 View
2014-07-18 N417 Electronic Filing System Acknowledgment Receipt 2 View
2014-07-18 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2004-07-20 IFEE Issue Fee Payment (PTO-85B) 1 View
2004-06-17 NOA Notice of Allowance and Fees Due (PTOL-85) 3 View
2004-06-17 NOA Notice of Allowance and Fees Due (PTOL-85) 1 View
2004-06-17 ANE.I Amendment After Final or under 37CFR 1.312, initialed by the examiner. 1 View
2004-06-17 IIFW Issue Information including classification, examiner, name, claim, renumbering, etc. 1 View
2004-06-17 FWCLM Index of Claims 1 View
2004-06-17 SRFW Search information including classification, databases and other search related notes 1 View
2004-06-01 A... Amendment/Request for Reconsideration-After Non-Final Rejection 2 View
2004-06-01 REM Applicant Arguments/Remarks Made in an Amendment 4 View
2004-03-26 CTFR Final Rejection 6 View
2004-03-26 892 List of references cited by examiner 1 View
2004-03-26 FOR Foreign Reference 5 View
2004-03-26 ANE.I Amendment After Final or under 37CFR 1.312, initialed by the examiner. 1 View
2004-03-26 FWCLM Index of Claims 1 View
2004-03-26 SRFW Search information including classification, databases and other search related notes 1 View
2004-03-16 WFEE Fee Worksheet (SB06) 1 View
2004-03-16 FWCLM Index of Claims 1 View
2004-03-12 SRNT Examiner's search strategy and results 3 View
2004-03-04 A... Amendment/Request for Reconsideration-After Non-Final Rejection 6 View
2004-03-04 REM Applicant Arguments/Remarks Made in an Amendment 3 View
2004-01-16 A.NE Response After Final Action 1 View
2004-01-16 REM Applicant Arguments/Remarks Made in an Amendment 3 View
2004-01-16 LET. Miscellaneous Incoming Letter 1 View
2003-11-12 CTFR Final Rejection 5 View
2003-11-12 892 List of references cited by examiner 1 View
2003-10-24 SRNT Examiner's search strategy and results 3 View
2003-09-08 A... Amendment/Request for Reconsideration-After Non-Final Rejection 1 View
2003-09-08 CLM Claims 3 View
2003-09-08 DRW Drawings-only black and white line drawings 1 View
2003-09-08 REM Applicant Arguments/Remarks Made in an Amendment 2 View
2003-09-08 LET. Miscellaneous Incoming Letter 1 View
2003-09-08 DRW Drawings-only black and white line drawings 1 View
2003-06-03 CTNF Non-Final Rejection 7 View
2003-06-03 892 List of references cited by examiner 1 View
2003-05-22 SRNT Examiner's search strategy and results 4 View
2002-01-11 TRNA Transmittal of New Application 1 View
2002-01-11 SPEC Specification 9 View
2002-01-11 CLM Claims 3 View
2002-01-11 ABST Abstract 1 View
2002-01-11 DRW Drawings-only black and white line drawings 7 View
2002-01-11 OATH Oath or Declaration filed 2 View
2002-01-11 IIFW Issue Information including classification, examiner, name, claim, renumbering, etc. 1 View
2002-01-11 SRFW Search information including classification, databases and other search related notes 1 View
2002-01-11 FWCLM Index of Claims 1 View
2002-01-11 DRW Drawings-only black and white line drawings 7 View
2002-01-11 TRNA Transmittal of New Application 1 View
2002-01-11 SPEC Specification 9 View
2002-01-11 CLM Claims 3 View
2002-01-11 ABST Abstract 1 View
2002-01-11 OATH Oath or Declaration filed 2 View
2002-01-11 WFEE Fee Worksheet (SB06) 1 View
2002-01-11 WFEE Fee Worksheet (SB06) 1 View
2002-01-11 WCLM Claims Worksheet (PTO-2022) 1 View
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Quick Facts
Patent No.
US 6,789,421
App. No.
10/044,088
Filed
2002-01-11
Granted
2004-09-14
Pub. No.
US20030131663A1
Art Unit
2856
PTA
-5 days