Collateral for a security interest recorded Oct 2, 2025 (JPMorgan Chase Bank, N.A.).
Term ends Mar 28, 2029 · High confidence
20-year base term ends Mar 31, 2028
Held by Kawneer Company, Inc.
Filed Mar 31, 2008 as application 12/059,520 · Granted Apr 26, 2011
Base term plus 362 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Mar 31, 2008
Mar 31, 2008
Term ends
Mar 28, 2029
Mar 28, 2029
Granted
Apr 26, 2011
Apr 26, 2011
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
362
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 362 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 Mar 31, 2008, when this application, 12/059,520, was filed | Mar 31, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +362 days, USPTO patent term adjustment record | Mar 28, 2029 | 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 | Mar 28, 2029 | 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 |
|---|---|---|---|
| Aug 22, 2008 Reel 21427, frame 793 | Hooper, William J., JR. | Alcoa Inc. | Assignment of Assignor's Interest |
| Nov 11, 2016 Reel 40599, frame 309 | Alcoa Inc. | Arconic Inc. | Change of Name |
| May 13, 2022 Reel 60066, frame 76 | Arconic Inc. | Howmet Aerospace, Inc. | Change of Name |
| Jul 6, 2022 Reel 60406, frame 352 | Howmet Aerospace Inc. | Arconic Technologies LLC | Assignment of Assignor's Interest |
| Aug 18, 2023 Reel 64641, frame 781 | Arconic Technologies LLC | U.S. Bank Trust Company, National Association | Notice of Grant of Security Interest in Intellectual Property (First Lien) |
| Aug 18, 2023 Reel 64641, frame 798 | Arconic Technologies LLC | Jpmorgan Chase Bank, N.a. | Notice of Grant of Security Interest (ABL) in Intellectual Property |
| Sep 30, 2025 Reel 72422, frame 368 | Arconic Technologies LLC | Kawneer Company, Inc. | Assignment of Assignor's Interest |
| Oct 1, 2025 Reel 72989, frame 222 | JPMorgan Chase Bank, N.A., as Agent | Arconic Technologies LLC | Notice of Release of Security Interest in Certain Patents |
| Oct 1, 2025 Reel 72995, frame 849 | U.S. Bank Trust Company, National Association, as Agent | Arconic Technologies LLC | Notice of Release of Security Interest in Certain Patents |
| Oct 2, 2025 Reel 72998, frame 416 | Kawneer Company, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Notice of Grant of Security Interest in Intellectual Property (First Lien) |
| Oct 2, 2025 Reel 72999, frame 713 | Kawneer Company, Inc. | JPMorgan Chase Bank, N.A., as Collateral Agent | Notice of Grant of Security Interest (ABL) in Intellectual Property |
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
Mar 2029
Term ends Mar 28, 2029. No further fees fall due before then
Note
The 362 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
9
later US patents cite this one
That is above the median 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.