Collateral for a security interest recorded Jul 13, 2021 (The Bank of New York Mellon Trust Company, N.A.).
Term ends Nov 19, 2033 · High confidence
20-year base term ends Dec 28, 2032
Filed Dec 28, 2012 as application 13/730,673 · Granted Oct 25, 2016
Base term plus 326 days of patent term adjustment (USPTO delay)
Today
2012
2033
Clock starts
Dec 28, 2012
Dec 28, 2012
Term ends
Nov 19, 2033
Nov 19, 2033
Granted
Oct 25, 2016
Oct 25, 2016
base term
patent term adjustment
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
326
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
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 326 days past its 20-year base term on prosecution delay. 2 of 3 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 this application, 13/730,673, was filed | Dec 28, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +326 days, USPTO patent term adjustment record | Nov 19, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 19, 2033 | High confidence |
This family
| US 9,476,547 | this patent 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 | In force 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 |
|---|---|---|---|
| Aug 19, 2013 Reel 31038, frame 795 | Quanci, John Francis; Kapoor, Rajat; Choi, Chun Wai; Chun, Ung-kyung | Suncoke Technology and Development LLC | Assignment of Assignor's Interest |
| May 24, 2017 Reel 42552, frame 829 | Suncoke Technology and Development LLC | Bank of America, N.A., as Administrative Agent | Notice of Grant of Security Interest in Patents |
| Aug 6, 2019 Reel 49967, frame 471 | Bank of America, N.A., as Administrative Agent | Suncoke Technology and Development LLC | Termination and Release of Security Interest in Patents |
| Aug 6, 2019 Reel 49967, frame 579 | Suncoke Technology and Development LLC | Bank of America, N.A., as Administrative Agent | Notice of Grant of Security Interest in Patents |
| 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 |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2033
Term ends Nov 19, 2033. Maintenance fees still fall due before then
Note
The 326 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
89
later US patents cite this one
That is top 5% of utility patents granted in 2016 in our data, the only group it is compared against.
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.