Term ends Feb 25, 2033 · High confidence
20-year base term ends Dec 23, 2028
Held by Clarcor Inc.
Filed Jul 28, 2011 as application 13/141,347 · Granted Jul 7, 2020
Base term plus 1525 days of patent term adjustment (USPTO delay)
Today
2008
2033
Clock starts
Dec 23, 2008
Dec 23, 2008
Term ends
Feb 25, 2033
Feb 25, 2033
Granted
Jul 7, 2020
Jul 7, 2020
base term
patent term adjustment
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
1,525
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.
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 1525 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 Dec 23, 2008, when application 12/317,409, the earliest non-provisional in its chain, was filed (this one was filed Jul 28, 2011) | Dec 23, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1525 days, USPTO patent term adjustment record | Feb 25, 2033 | 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 | Feb 25, 2033 | High confidence |
This family
| Application 12/317,409 | Abandoned not computed | not computed |
| Application PCT/US2009/069496 | PCT application no patent term | no patent term |
| US 10,702,807 | this patent Feb 2033 | Feb 2033 |
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 |
|---|---|---|---|
| Jun 30, 2011 Reel 26528, frame 10 | Sasur, Timothy M.; Sazama, Jeremiah | Stanadyne Corporation | Assignment of Assignor's Interest |
| Feb 14, 2013 Reel 29816, frame 346 | Stanadyne Corporation | Jefferies Finance LLC | Patent Security Agreement |
| May 2, 2014 Reel 32813, frame 619 | Wells Fargo Capital Finance, LLC | Stanadyne Corporation | Release of Security Interest |
| May 2, 2014 Reel 32815, frame 204 | Jefferies Finance LLC | Stanadyne Corporation | Release of Security Interest |
| May 21, 2014 Reel 32939, frame 504 | Stanadyne Corporation | Clarcor Engine Mobile Solutions, LLC | Assignment of Assignor's Interest |
| May 21, 2021 Reel 56309, frame 498 | Clarcor Engine Mobile Solutions, LLC | Clarcor Em Holdings, Inc. | Merger |
| May 24, 2021 Reel 56325, frame 637 | Clarcor Em Holdings, Inc. | Clarcor Inc. | Merger |
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
Feb 2033
Term ends Feb 25, 2033. Maintenance fees still fall due before then
Note
The 1525 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
11
later US patents cite this one
That is top 25% 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.