Collateral for a security interest recorded Dec 8, 2022 (Wells Fargo Capital Finance, LLC).
Term ends Nov 21, 2038 · High confidence
20-year base term ends Oct 17, 2037
Filed Nov 10, 2020 as application 17/094,232 · Granted Dec 26, 2023
Base term plus 400 days of patent term adjustment (USPTO delay)
Today
2017
2038
Clock starts
Oct 17, 2017
Oct 17, 2017
Term ends
Nov 21, 2038
Nov 21, 2038
Granted
Dec 26, 2023
Dec 26, 2023
base term
patent term adjustment
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
400
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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 runs 400 days past its 20-year base term on prosecution delay. 0 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 Oct 17, 2017, when application PCT/US2017/056853, the earliest non-provisional in its chain, was filed (this one was filed Nov 10, 2020) | Oct 17, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +400 days, USPTO patent term adjustment record | Nov 21, 2038 | 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 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 21, 2038 | High confidence |
This family
| Application PCT/US2017/056853 | PCT application no patent term | no patent term |
| US 10,836,904 | In force Oct 2037 | Oct 2037 |
| US 11,851,564 | this patent Nov 2038 | Nov 2038 |
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 |
|---|---|---|---|
| Oct 27, 2021 Reel 57932, frame 626 | Osborn, Shawn J.; Carter, Christopher M. | Ascend Performance Materials Operations LLC | Assignment of Assignor's Interest |
| Dec 8, 2022 Reel 62094, frame 172 | Ascend Performance Materials Operations LLC | Wells Fargo Capital Finance, LLC | Security Interest |
| Apr 10, 2025 Reel 70811, frame 705 | Bank Of America, N.a. | Wilmington Savings Fund Society, FSB | Security Interest |
| Dec 19, 2025 Reel 74007, frame 183 | Ascend Performance Materials Operations LLC | Wells Fargo Bank, National Association | Security Interest |
| Dec 23, 2025 Reel 74050, frame 90 | Wilmington Savings Fund Society, FSB | Ascend Performance Materials Operations LLC | Release of Security Interest |
| Dec 23, 2025 Reel 74056, frame 183 | Ascend Performance Materials Operations LLC | Wilmington Savings Fund Society, FSB | 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 2038
Term ends Nov 21, 2038. Maintenance fees still fall due before then
Note
The 400 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2023 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.