Also listed on E.I. du Pont de Nemours and Company, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Nov 15, 2024 (Bank of America, N.A.).
Term ends Nov 6, 2032 · High confidence
20-year base term ends Nov 6, 2032
Filed Aug 3, 2015 as application 14/816,287 · Granted Jun 14, 2016
Base term, 20 years from filing
Today
2012
2032
Clock starts
Nov 6, 2012
Nov 6, 2012
Term ends
Nov 6, 2032
Nov 6, 2032
Granted
Jun 14, 2016
Jun 14, 2016
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
None
Term adjustment
No prosecution delay on this record.
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.
3
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. 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 Nov 6, 2012, when application 13/669,540, the earliest non-provisional in its chain, was filed (this one was filed Aug 3, 2015) | Nov 6, 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 6, 2032 | High confidence |
This family
| US 8,721,871 | In force Nov 2032 | Nov 2032 |
| US 9,139,783 | In force Jan 2033 | Jan 2033 |
| US 9,365,782 | this patent Nov 2032 | Nov 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 26, 2019 Reel 49879, frame 212 | E. I. du Pont de Nemours and Company | Dupont Industrial Biosciences USA, LLC | Assignment of Assignor's Interest |
| Sep 6, 2019 Reel 50301, frame 65 | E. I. du Pont de Nemours and Company | Dupont Industrial Biosciences USA, LLC | Corrective Assignment to Correct the Entity for Assignee Previously Recorded at Reel: 49879 Frame: 212. Assignor(S) Hereby Confirms the Assignment. |
| Jul 31, 2020 Reel 53369, frame 191 | Dupont Industrial Biosciences USA, LLC | Refining Technology Solutions, LLC | Assignment of Assignor's Interest |
| Apr 4, 2022 Reel 59593, frame 951 | Refining Technology Solutions, LLC | Madison Pacific Trust Limited, as Security Agent | IP Security Agreement Supplement |
| Nov 15, 2024 Reel 69284, frame 388 | Belco Technologies Corporation; Refining Technology Solutions, LLC; Mecs, Inc. | Bank of America, N.A., as Collateral Agent | Security Interest |
| Nov 15, 2024 Reel 69286, frame 861 | Belco Technologies Corporation; Refining Technology Solutions, LLC; Mecs, Inc. | MSD Admin Services, LLC, as Collateral Agent | Security Interest |
| Nov 19, 2024 Reel 69389, frame 366 | Madison Pacific Trust Limited | Refining Technology Solutions, LLC | Release of Security Interest Recorded at Reel/Frame 059593/0951 |
| May 13, 2025 Reel 71103, frame 527 | Kuperavage, JR., Vincent Adam; Dindi, Hasan; Pulley, Alan Howard; Ta, Thanh Gia | E. I. Dupont de Nemours and Company | Assignment of Assignor's Interest |
| Nov 6, 2026 Reel 76671, frame 393 | Belco Technologies Corporation; Refining Technology Solutions, LLC; Mecs, Inc. | U.S. Bank National Association | 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 2032
Term ends Nov 6, 2032. Maintenance fees still fall due before then
Citations
20
later US patents cite this one
That is top 25% 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.