Term ended Jan 20, 2026 · High confidence
20-year base term ended Dec 23, 2025
Held by Rectorseal, LLC
Filed Sep 9, 2008 as application 12/283,297 · Granted Mar 22, 2011
Base term plus 28 days of patent term adjustment (USPTO delay)
Today
Term ended Jan 20, 2026
2005
2026
Clock starts
Dec 23, 2005
Dec 23, 2005
Term ended
Jan 20, 2026
Jan 20, 2026
Granted
Mar 22, 2011
Mar 22, 2011
base term
patent term adjustment
after the term ends
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
28
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.
43
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 28 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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, 2005, when application 11/317,700, the earliest non-provisional in its chain, was filed (this one was filed Sep 9, 2008) | Dec 23, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +28 days, USPTO patent term adjustment record | Jan 20, 2026 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Jan 20, 2026 | High confidence |
This family
| US 7,203,053 | Term ended Dec 2025 | Dec 2025 |
| US 7,423,861 | Term ended Sep 2026 | Sep 2026 |
| US 7,474,519 | Term ended Dec 2025 | Dec 2025 |
| US 7,911,762 | this patent Jan 2026 | Jan 2026 |
| US 7,835,133 | Term ended Feb 2026 | Feb 2026 |
| US 8,270,143 | Term ended Dec 2025 | Dec 2025 |
| US 8,531,815 | Term ended Dec 2025 | Dec 2025 |
| US 9,343,238 | Term ended Dec 2025 | Dec 2025 |
8 of 43 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 |
|---|---|---|---|
| May 18, 2009 Reel 22699, frame 860 | Stockman, Robert M. | American Radionic Company, Inc. | Assignment of Assignor's Interest |
| Aug 13, 2020 Reel 53488, frame 675 | American Radionic Company, Inc. | Amrad Manufacturing, LLC | Assignment of Assignor's Interest |
| Aug 25, 2020 Reel 53599, frame 324 | Amrad Manufacturing, LLC | Frost Bank | Security Interest |
| Dec 2, 2024 Reel 69475, frame 217 | Frost Bank | Vladmir, Ltd.; Amrad Manufacturing, LLC | Release of Security Interest |
| Dec 2, 2024 reel/frame not recorded | Frost Bank | Vladmir, Ltd. | Release of Security Interest |
| Dec 2, 2024 reel/frame not recorded | Frost Bank | Amrad Manufacturing, LLC | Release of Security Interest |
| May 13, 2025 Reel 71738, frame 759 | Amrad Manufacturing, LLC | Hvac South, LLC | Confirmatory Assignment |
| Oct 2, 2025 Reel 73080, frame 923 | Amrad Manufacturing, LLC | Hvac South, LLC | Corrective Assignment to Correct the Application Numbers 15969608 to 15989608 and 16161205 to 16171205 Previously Recorded on Reel 71738 Frame 759. Assignor(S) Hereby Confirms the Confirmatory Assignment. |
| Nov 6, 2025 Reel 73482, frame 908 | Hvac South, LLC | Jpmorgan Chase Bank, N.a. | Security Interest |
| Jun 30, 2026 Reel 75140, frame 814 | Hvac South, LLC | Rectorseal, LLC | 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
Note
The 28 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
165
later US patents cite this one
That is top 5% of utility patents granted in 2011 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.