Collateral for a security interest recorded Oct 29, 2025 (Wells Fargo Bank, National Association).
Term ends Oct 16, 2028 · High confidence
20-year base term ended Jan 26, 2026
Held by Federal Signal Corporation
Filed Jan 26, 2006 as application 11/340,104 · Granted Sep 21, 2010
Base term plus 994 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Jan 26, 2006
Jan 26, 2006
Term ends
Oct 16, 2028
Oct 16, 2028
Granted
Sep 21, 2010
Sep 21, 2010
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
994
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.
This patent's term runs 994 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 Jan 26, 2006, when this application, 11/340,104, was filed | Jan 26, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +994 days, USPTO patent term adjustment record | Oct 16, 2028 | 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 16, 2028 | High confidence |
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 |
|---|---|---|---|
| Feb 24, 2015 Reel 35016, frame 74 | Crocker, James P | Waterblasting, LLC | Assignment of Assignor's Interest |
| Mar 2, 2015 Reel 35068, frame 132 | Waterblasting, LLC | Comerica Bank | Security Interest |
| Apr 10, 2015 Reel 35383, frame 693 | Waterblasting, LLC | Comerica Bank | Security Interest |
| May 29, 2018 Reel 45925, frame 233 | Waterblasting, LLC | Comerica Bank | Security Interest |
| Apr 7, 2020 Reel 52333, frame 940 | Waterblasting, LLC | Bank Of America, N.a. | Notice of Grant of Security Interest in Patents |
| May 18, 2020 Reel 52693, frame 542 | Comerica Bank | Waterblasting, LLC | Release of Security Interest |
| Feb 18, 2025 Reel 70238, frame 112 | Waterblasting, LLC | FSC Highlander LLC | Assignment of Assignor's Interest |
| Apr 9, 2025 Reel 70784, frame 419 | Waterblasting LLC | FSC Highlander LLC | Assignment of Assignor's Interest |
| Apr 9, 2025 Reel 70785, frame 723 | FSC Highlander LLC | Federal Signal Corporation | Assignment of Assignor's Interest |
| Oct 29, 2025 Reel 72717, frame 9 | Federal Signal Corporation | Wells Fargo Bank, National Association, as Administrative Agent | 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 2028
Term ends Oct 16, 2028. No further fees fall due before then
Note
The 994 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is above the median of utility patents granted in 2010 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.