Collateral for a security interest recorded Dec 2, 2016 (TCF National Bank).
Term ends Oct 23, 2027 · High confidence
20-year base term ended Jun 6, 2026
Held by Nitrofill, LLC
Filed Jun 6, 2006 as application 11/447,079 · Granted Dec 1, 2009
Base term plus 504 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Jun 6, 2006
Jun 6, 2006
Term ends
Oct 23, 2027
Oct 23, 2027
Granted
Dec 1, 2009
Dec 1, 2009
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
504
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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 504 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jun 6, 2006, when this application, 11/447,079, was filed | Jun 6, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +504 days, USPTO patent term adjustment record | Oct 23, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 23, 2027 | High confidence |
This family
| US 7,624,774 | this patent Oct 2027 | Oct 2027 |
| US 7,770,608 | Term ended Jun 2026 | Jun 2026 |
| US 7,677,274 | Term ended Jun 2026 | Jun 2026 |
| US 8,196,616 | Term ended Jun 2026 | Jun 2026 |
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 15, 2006 Reel 17798, frame 238 | Lighter, Jay | Kreska Technologies | Recordation of Assignment |
| Aug 19, 2010 Reel 24850, frame 679 | Kreska Technologies | Nitrofill, Inc. | Assignment of Assignor's Interest |
| Sep 1, 2010 Reel 24915, frame 618 | Nitrofill, Inc. | Nitrofill, LLC | Assignment of Assignor's Interest |
| Sep 22, 2010 Reel 25026, frame 97 | Nitrofill, LLC, a Delaware Limited Liability Company; Besser Industrial Tools, LLC, a Delaware Limited Liability Company; Vehicle Safety Solutions, LLC, a Florida Limited Liability Company | Deerpath Funding, LP | Security Agreement |
| Nov 2, 2016 Reel 40198, frame 256 | Deerpath Funding, LP | Nitrofill, LLC; Besser Industrial Tools, LLC; Vehicle Safety Solutions, LLC | Release of Security Interest |
| Nov 2, 2016 reel/frame not recorded | Deerpath Funding, LP | Nitrofill, LLC | Release of Security Interest |
| Nov 2, 2016 reel/frame not recorded | Deerpath Funding, LP | Besser Industrial Tools, LLC | Release of Security Interest |
| Nov 2, 2016 reel/frame not recorded | Deerpath Funding, LP | Vehicle Safety Solutions, LLC | Release of Security Interest |
| Dec 2, 2016 Reel 40492, frame 902 | Nitrofill, LLC | TCF National Bank | Security Interest |
| Aug 12, 2021 Reel 57159, frame 788 | Nitrofill, LLC | Comerica Bank, As Agent | Security Interest |
| Aug 15, 2021 Reel 57180, frame 804 | The Huntington National Bank | Nitrofill, LLC | Release of Security Interest |
| Dec 13, 2023 Reel 65863, frame 908 | Comerica Bank, As Agent | Nitrofill, LLC | Release of Security Interest |
| May 23, 2024 Reel 67514, frame 562 | Nitrofill, LLC, a Delaware Limited Liability Company | Truist Bank, As Administrative Agent | Security Interest |
| Aug 14, 2026 Reel 75653, frame 577 | Nitrofill, LLC | Fidelity Direct Lending LLC, as Agent | Security Interest |
| Aug 14, 2026 Reel 75656, frame 943 | Truist Bank | Nitrofill, LLC | 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
Oct 2027
Term ends Oct 23, 2027. No further fees fall due before then
Note
The 504 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
15
later US patents cite this one
That is above the median of utility patents granted in 2009 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.