Collateral for a security interest recorded Dec 19, 2025 (Morgan Stanley Senior Funding, Inc.).
Term ends Dec 15, 2041 · High confidence
20-year base term ends Dec 5, 2042
Held by Perimeter Solutions, LP
Filed Dec 5, 2022 as application 18/061,542 · Granted May 7, 2024
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
2022
2042
Clock starts
Dec 5, 2022
Dec 5, 2022
Term ends
Dec 15, 2041
Dec 15, 2041
Granted
May 7, 2024
May 7, 2024
base term
after the term ends
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.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 11,420,084.
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.
18
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 resolved from the filed document caps it earlier. 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 Dec 5, 2022, when this application, 18/061,542, was filed | Dec 5, 2042 | 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 11,420,084) | capped to Dec 15, 2041 | 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 | Dec 15, 2041 | High confidence |
This family
| US 11,395,934 | In force Aug 2041 | Aug 2041 |
| US 11,420,084 | In force Dec 2041 | Dec 2041 |
| US 11,602,658 | In force Aug 2041 | Aug 2041 |
| US 11,628,324 | In force Dec 2041 | Dec 2041 |
| US 11,865,391 | In force Aug 2041 | Aug 2041 |
| US 11,975,231 | this patent Dec 2041 | Dec 2041 |
| US 11,883,703 | In force Aug 2041 | Aug 2041 |
| US 11,865,392 | In force Aug 2041 | Aug 2041 |
8 of 18 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Jan 11, 2023 Reel 62339, frame 746 | Schnarr, Michael S.; Burnham, Robert J.; Hulbert, Dennis; McLellan, Joseph; White, Michael; Geissler, Gerald; Frankel, Gerald S. | FRS Group, LLC | Assignment of Assignor's Interest |
| Jan 11, 2023 Reel 62339, frame 758 | Wilkening, David | FRS Group, LLC | Assignment of Assignor's Interest |
| Jun 6, 2023 Reel 63868, frame 441 | FRS Group LLC | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Jun 2, 2025 Reel 71285, frame 944 | JPMorgan Chase Bank, N.A. as Collateral Agent | FRS Group LLC | Release of Security Interest |
| Sep 2, 2025 Reel 72791, frame 298 | Fortress North America, LLC; FRS Group LLC; Compass Minerals America Inc. | Perimeter Solutions, LP | Assignment of Assignor's Interest |
| Dec 19, 2025 Reel 74007, frame 465 | Perimeter Solutions LP | Morgan Stanley Senior Funding, Inc., as Administrative Agent | Patent Security Agreement |
| Jan 2, 2026 Reel 73353, frame 552 | Perimeter Solutions LP | U.S. Bank Trust Company, National Association, as Notes Collateral Agent | Security Interest |
| Jan 2, 2026 Reel 74174, frame 258 | Perimeter Solutions LP | U.S. Bank Trust Company, National Association, as Notes Collateral Agent | Notes Patent Security Agreement |
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
Dec 2041
Term ends Dec 15, 2041. Maintenance fees still fall due before then
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 11,420,084.
Citations
5
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.