Collateral for a security interest recorded Oct 19, 2018 (Wells Fargo Bank, National Association).
Term ended no later than Nov 28, 2022 · Medium confidence
20-year base term ended Nov 1, 2021
USPTO later recorded it as expired for non-payment on Nov 11, 2024.
Filed Dec 19, 2005 as application 11/305,041 · Granted Oct 9, 2012
Base term plus 392 days of patent term adjustment (USPTO delay)
Today
Ended no later than Nov 28, 2022
2001
2026
Clock starts
Nov 1, 2001
Nov 1, 2001
Ended no later than
Nov 28, 2022
Nov 28, 2022
Granted
Oct 9, 2012
Oct 9, 2012
base term
patent term adjustment
after the term ends
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
392
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
44
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 392 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Medium. 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 Nov 1, 2001, when application 10/004,365, the earliest non-provisional in its chain, was filed (this one was filed Dec 19, 2005) | Nov 1, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +392 days, USPTO patent term adjustment record | Nov 28, 2022 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Nov 11, 2024, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | no later than Nov 28, 2022 | Medium confidence |
This family
| US 7,107,729 | Term ended Nov 2021 | Nov 2021 |
| US 6,761,201 | Term ended Oct 2022 | Oct 2022 |
| US 7,891,153 | Lapsed on the fee record Feb 2019 | Feb 2019 |
| US 7,316,759 | Term ended Nov 2023 | Nov 2023 |
| Application 11/013,700 | Abandoned not computed | not computed |
| US 8,281,527 | this patent no later than Nov 2022 | no later than Nov 2022 |
| Application 11/303,992 | Abandoned not computed | not computed |
| US 7,891,154 | Lapsed on the fee record Feb 2019 | Feb 2019 |
8 of 44 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 |
|---|---|---|---|
| Dec 14, 2007 Reel 20261, frame 577 | Afg Industries, Inc. | AGC Flat Glass North America, Inc. | Change of Name |
| Oct 19, 2018 Reel 47232, frame 487 | Quanex Ig Systems, Inc. | Wells Fargo Bank, National Association, as 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
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 392 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Nov 28, 2022. We will not guess the cap.
Citations
19
later US patents cite this one
That is above the median of utility patents granted in 2012 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.