Term ends Mar 1, 2037 · High confidence
20-year base term ends Mar 1, 2037
Held by Elmet Technologies, LLC
Filed Aug 25, 2022 as application 17/895,290 · Granted Nov 28, 2023
Base term, 20 years from filing
Today
2017
2037
Clock starts
Mar 1, 2017
Mar 1, 2017
Term ends
Mar 1, 2037
Mar 1, 2037
Granted
Nov 28, 2023
Nov 28, 2023
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,099,267, US 10,926,311, US 11,458,519, to Mar 1, 2037. The term already ends on or before that date, so the cap shortened nothing.
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.
4
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. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Mar 1, 2017, when application 15/446,491, the earliest non-provisional in its chain, was filed (this one was filed Aug 25, 2022) | Mar 1, 2037 | 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 | Disclaimer resolved from the filed document (refs US 10,099,267, US 10,926,311, US 11,458,519) | resolves to Mar 1, 2037, no earlier than this term, so no change | 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 | Mar 1, 2037 | High confidence |
This family
| US 10,099,267 | In force Mar 2037 | Mar 2037 |
| US 10,926,311 | In force Mar 2037 | Mar 2037 |
| US 11,458,519 | In force Mar 2037 | Mar 2037 |
| US 11,826,822 | this patent Mar 2037 | Mar 2037 |
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 3, 2023 Reel 64482, frame 309 | Stawovy, Michael Thomas | H.C. Starck Inc. | Assignment of Assignor's Interest |
| Oct 31, 2023 Reel 65402, frame 530 | H.C. Starck Inc. | Coldwater Facility Holding, LLC | Assignment of Assignor's Interest |
| Nov 1, 2023 Reel 65415, frame 744 | Coldwater Facility Holding, LLC | H.C. Starck Solutions Coldwater, LLC | Change of Name |
| Nov 6, 2023 Reel 65472, frame 843 | H.C. Starck Solutions Coldwater, LLC; H.C. Starck Solutions Euclid, LLC | Wells Fargo Bank, National Association | Security Interest |
| Feb 3, 2026 Reel 73679, frame 616 | H.C. Starck Solutions Coldwater, LLC | Elmet Technologies, LLC | Assignment of Assignor's 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
Mar 2037
Term ends Mar 1, 2037. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,099,267, US 10,926,311, US 11,458,519, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite 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.