Term ends no later than Aug 22, 2031 · Medium confidence
20-year base term ends Aug 22, 2031
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Aerogel Technologies, LLC
Filed Jul 19, 2017 as application 15/654,111 · Granted Oct 15, 2019
Base term, 20 years from filing
Today
2011
2031
Clock starts
Aug 22, 2011
Aug 22, 2011
Ends no later than
Aug 22, 2031
Aug 22, 2031
Granted
Oct 15, 2019
Oct 15, 2019
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 on file with no resolved reference, so no cap is applied and none is guessed. 1 of 2 maintenance fees is paid so far. Confidence: Medium. 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 Aug 22, 2011, when application 13/214,633, the earliest non-provisional in its chain, was filed (this one was filed Jul 19, 2017) | Aug 22, 2031 | 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 on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Aug 22, 2031 | Medium confidence |
This family
| Application 13/214,633 | Abandoned not computed | not computed |
| US 9,745,198 | In force Aug 2031 | Aug 2031 |
| US 10,442,693 | this patent no later than Aug 2031 | no later than Aug 2031 |
| Application 16/562,982 | Abandoned not computed | not computed |
| Application 18/454,482 | Abandoned 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 |
|---|---|---|---|
| Mar 5, 2018 Reel 45103, frame 568 | Leventis, Nicholas | Aerogel Technologies, LLC | Assignment of Assignor's Interest |
| Mar 5, 2018 Reel 45103, frame 571 | Sotiriou-leventis, Chariklia; Chidambareswarapattar, Chakkaravarthy | Leventis, Nicholas | Assignment of Assignor's Interest |
| Sep 20, 2022 Reel 61150, frame 615 | Missouri University of Science & Technology | National Science Foundation | Confirmatory License |
| Nov 17, 2023 Reel 65594, frame 827 | Missouri University of Science & Technology | National Science Foundation | Confirmatory License |
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
Aug 2031
Term ends no later than Aug 22, 2031. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Aug 22, 2031. We will not guess the cap.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2019 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.