Collateral for a security interest recorded Jan 31, 2025 (Hercules Capital, Inc.).
Term ends Sep 28, 2038 · High confidence
20-year base term ends Mar 29, 2038
Held by Vulcanforms Inc.
Filed Mar 29, 2018 as application 15/940,315 · Granted Dec 29, 2020
Base term plus 183 days of patent term adjustment (USPTO delay)
Today
2018
2038
Clock starts
Mar 29, 2018
Mar 29, 2018
Term ends
Sep 28, 2038
Sep 28, 2038
Granted
Dec 29, 2020
Dec 29, 2020
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
183
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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 runs 183 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 29, 2018, when this application, 15/940,315, was filed | Mar 29, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +183 days, USPTO patent term adjustment record | Sep 28, 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 28, 2038 | High confidence |
This family
| US 10,875,094 | this patent Sep 2038 | Sep 2038 |
| Application PCT/US2019/024832 | PCT application no patent term | no patent term |
| US 12,233,476 | In force Dec 2038 | Dec 2038 |
| Application 19/028,087 | Pending not computed | not computed |
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 22, 2018 Reel 46658, frame 129 | Feldmann, Martin C.; Komsta, Jan Pawel; Sweetland, Matthew | Vulcanforms Inc. | Assignment of Assignor's Interest |
| Jan 31, 2025 Reel 70076, frame 270 | Vulcanforms Inc.; Arwood Machine Corporation | Hercules Capital, Inc. | Security Interest |
| Feb 7, 2025 Reel 70149, frame 420 | Vulcanforms Inc.; Arwood Machine Corporation | Stifel Bank | Release of 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
Sep 2038
Term ends Sep 28, 2038. Maintenance fees still fall due before then
Note
The 183 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
24
later US patents cite this one
That is top 10% of utility patents granted in 2020 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.