Collateral for a security interest recorded Jul 13, 2021 (The Bank of New York Mellon Trust Company, N.A.).
Term ends Dec 28, 2032 · High confidence
20-year base term ends Dec 28, 2032
Filed Mar 3, 2021 as application 17/191,119 · Granted Jun 10, 2025
Base term, 20 years from filing
Today
2012
2032
Clock starts
Dec 28, 2012
Dec 28, 2012
Term ends
Dec 28, 2032
Dec 28, 2032
Granted
Jun 10, 2025
Jun 10, 2025
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
0 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 is its 20-year base term, with no adjustment for prosecution delay. 0 of 1 maintenance fees are 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 28, 2012, when application 13/730,673, the earliest non-provisional in its chain, was filed (this one was filed Mar 3, 2021) | Dec 28, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 28, 2032 | High confidence |
This family
| US 9,476,547 | In force Nov 2033 | Nov 2033 |
| US 10,047,295 | In force Jan 2034 | Jan 2034 |
| Application PCT/US2014/028019 | PCT application no patent term | no patent term |
| US 10,975,309 | In force Dec 2032 | Dec 2032 |
| US 11,008,517 | In force no later than Dec 2032 | no later than Dec 2032 |
| US 12,325,828 | this patent Dec 2032 | Dec 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jul 2, 2021 Reel 56743, frame 863 | Quanci, John Franci; Kapoor, Rajat; Choi, Chun Wai; Chun, Ung-kyung | Suncoke Technology and Development LLC | Assignment of Assignor's Interest |
| Jul 13, 2021 Reel 56846, frame 548 | Suncoke Technology and Development LLC | The Bank of New York Mellon Trust Company, N.A., as Collateral Agent | Security Interest |
| Jul 14, 2021 Reel 56865, frame 514 | Quanci, John Francis; Kapoor, Rajat; Choi, Chun Wai; Chun, Ung-kyung | Suncoke Technology and Development LLC | Corrective Assignment to Correct the 1ST Assignor's Name Previously Recorded at Reel: 056743 Frame: 0863. Assignor(S) Hereby Confirms the Assignment . |
| Jul 25, 2025 Reel 72254, frame 272 | Suncoke Technology and Development LLC | Bank of America, N.A., as Administrative Agent | 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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Alerts on its grants, lapses and transfers.
What's changing
Dec 2032
Term ends Dec 28, 2032. Maintenance fees still fall due before then
Citations
32
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.