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Systems, Methods, and Apparatus for Operation of Dual Fuel Engines

US 11,441,495 In force
OverviewFamilyAssignmentsSources & methods

Term ends Nov 10, 2035 · High confidence

Held by Cummins Inc.
Filed Sep 24, 2020 as application 17/030,709 · Granted Sep 13, 2022
Base term plus 6 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2015 2035
Clock starts
Nov 4, 2015
Term ends
Nov 10, 2035
Granted
Sep 13, 2022
base term fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
6
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
6
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 6 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Nov 4, 2015, when application PCT/US2015/059012, the earliest non-provisional in its chain, was filed (this one was filed Sep 24, 2020)Nov 4, 2035High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+6 days, USPTO patent term adjustment recordNov 10, 2035High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 10, 2035High confidence

This family

Application PCT/US2015/059012PCT application
no patent term
no patent term
US 10,815,913In force
Mar 2037
Mar 2037
US 11,441,495this patent
Nov 2035
Nov 2035
US 11,840,971In force
Nov 2035
Nov 2035
US 12,221,934In force
Nov 2035
Nov 2035
Application 19/013,698Abandoned
not computed
not computed
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
Sep 24, 2020
Reel 53870, frame 594
Bruner, C. Larry; Garimella, Phanindra V; George, Geomy; Kolhouse, J. Steven; Hodzen, Edmund P.; Rosswurm, Mark A.; Zur Loye, Axel Otto; Borregard, Robert CharlesCummins Inc.Assignment of Assignor's Interest
Aug 29, 2022
Reel 60927, frame 645
Lutz, Timothy P.Cummins Inc.Assignment of Assignor's 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited