The Patent Finder
US

Coke Plant Including Exhaust Gas Sharing

US 11,441,077 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Jul 13, 2021 (The Bank of New York Mellon Trust Company, N.A.).

Term ends Aug 17, 2032 · High confidence

Filed Mar 24, 2020 as application 16/828,448 · Granted Sep 13, 2022
Base term, 20 years from filing
Today
20 years from filing
2012 2032
Clock starts
Aug 17, 2012
Term ends
Aug 17, 2032
Granted
Sep 13, 2022
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 is its 20-year base term, with no adjustment for prosecution delay. 1 of 2 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 Aug 17, 2012, when application 13/588,996, the earliest non-provisional in its chain, was filed (this one was filed Mar 24, 2020)Aug 17, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderAug 17, 2032High confidence

This family

US 9,243,186In force
Jun 2034
Jun 2034
Application PCT/US2013/054711PCT application
no patent term
no patent term
US 10,041,002In force
Oct 2032
Oct 2032
US 10,611,965In force
no later than Aug 2032
no later than Aug 2032
US 11,441,077this patent
Aug 2032
Aug 2032
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
Jul 2, 2021
Reel 56743, frame 148
Quanci, John F.; Chun, Peter U.; Kaplarevic, Milos J.Suncoke Technology and Development LLCAssignment of Assignor's Interest
Jul 13, 2021
Reel 56846, frame 548
Suncoke Technology and Development LLCThe Bank of New York Mellon Trust Company, N.A., as Collateral AgentSecurity Interest
Jul 25, 2025
Reel 72254, frame 272
Suncoke Technology and Development LLCBank of America, N.A., as Administrative AgentSecurity 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 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited