Collateral for a security interest recorded Jul 13, 2021 (The Bank of New York Mellon Trust Company, N.A.).
Term ends no later than Nov 4, 2034 · Medium confidence
20-year base term ends Aug 17, 2032
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Filed Aug 17, 2012 as application 13/589,009 · Granted Jun 7, 2016
Base term plus 809 days of patent term adjustment (USPTO delay)
Today
2012
2034
Clock starts
Aug 17, 2012
Aug 17, 2012
Ends no later than
Nov 4, 2034
Nov 4, 2034
Granted
Jun 7, 2016
Jun 7, 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
809
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
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 runs 809 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Aug 17, 2012, when this application, 13/589,009, was filed | Aug 17, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +809 days, USPTO patent term adjustment record | Nov 4, 2034 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Nov 4, 2034 | Medium confidence |
This family
| US 9,359,554 | this patent no later than Nov 2034 | no later than Nov 2034 |
| Application PCT/US2013/054703 | PCT application no patent term | no patent term |
| US 10,947,455 | In force no later than Aug 2032 | no later than Aug 2032 |
| US 11,692,138 | In force no later than Aug 2032 | no later than Aug 2032 |
| US 12,195,671 | In force 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Aug 30, 2012 Reel 28879, frame 541 | Quanci, John F.; Chun, Peter U.; Kaplarevic, Milos J.; Reiling, Vince G. | 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 2034
Term ends no later than Nov 4, 2034. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 809 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 4, 2034. We will not guess the cap.
Citations
95
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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.