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Optimizing Photovoltaic-Electrolyzer Efficiency

US 7,906,007 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Mar 15, 2023 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Dec 5, 2006 as application 11/566,702 · Granted Mar 15, 2011
Base term, 20 years from filing, plus 1134 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Mar 15, 2023
2005 2026
Clock starts
Feb 2, 2005
No longer in force
Mar 15, 2023
Granted
Mar 15, 2011
Term would have run to
Nov 27, 2026
base term patent term adjustment after the term ends fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,134
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,510,640.
2 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Nov 27, 2026: its 20-year base term plus 1134 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Feb 2, 2005, when application 11/049,213, the earliest non-provisional in its chain, was filed (this one was filed Dec 5, 2006)Feb 2, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1134 days, USPTO patent term adjustment recordMar 12, 2028High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 7,510,640)capped to Nov 27, 2026High confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Mar 15, 2023High confidence
Computed term endThe steps above, in orderMar 15, 2023High confidence

This family

US 7,510,640In force
Nov 2026
Nov 2026
US 7,906,007this patent
Mar 2023
Mar 2023
US 7,674,358Term ended
Feb 2025
Feb 2025
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Feb 13, 2007
Reel 18884, frame 50
Gibson, Thomas L.; Kelly, Nelson A.GM Global Technology Operations, Inc.Assignment of Assignor's Interest
Feb 4, 2009
Reel 22201, frame 448
GM Global Technology Operations, Inc.United States Department of the TreasurySecurity Agreement
Apr 16, 2009
Reel 22553, frame 540
GM Global Technology Operations, Inc.Citicorp USA, Inc. as Agent for Bank Priority Secured Parties; Citicorp USA, Inc. as Agent for Hedge Priority Secured PartiesSecurity Agreement
Apr 16, 2009
reel/frame not recorded
GM Global Technology Operations, Inc.Citicorp USA, Inc. as Agent for Bank Priority Secured PartiesSecurity Agreement
Apr 16, 2009
reel/frame not recorded
GM Global Technology Operations, Inc.Citicorp USA, Inc. as Agent for Hedge Priority Secured PartiesSecurity Agreement
Aug 20, 2009
Reel 23124, frame 563
United States Department of the TreasuryGM Global Technology Operations, Inc.Release of Security Interest
Aug 21, 2009
Reel 23155, frame 663
Citicorp USA, Inc. as Agent for Bank Priority Secured Parties; Citicorp USA, Inc. as Agent for Hedge Priority Secured PartiesGM Global Technology Operations, Inc.Release of Security Interest
Aug 27, 2009
Reel 23156, frame 264
GM Global Technology Operations, Inc.United States Department of the TreasurySecurity Agreement
Aug 28, 2009
Reel 23162, frame 140
GM Global Technology Operations, Inc.Uaw Retiree Medical Benefits TrustSecurity Agreement
Nov 4, 2010
Reel 25245, frame 656
United States Department of the TreasuryGM Global Technology Operations, Inc.Release of Security Interest
Nov 5, 2010
Reel 25314, frame 946
Uaw Retiree Medical Benefits TrustGM Global Technology Operations, Inc.Release of Security Interest
Nov 8, 2010
Reel 25327, frame 41
GM Global Technology Operations, Inc.Wilmington Trust CompanySecurity Agreement
Feb 10, 2011
Reel 25781, frame 1
GM Global Technology Operations, Inc.GM Global Technology Operations LLCChange of Name
Nov 7, 2014
Reel 34184, frame 1
Wilmington Trust CompanyGM Global Technology Operations LLCRelease of Security Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

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