Lapsed Feb 22, 2019 on the fee record · Medium confidence
20-year base term ended Sep 20, 2025
Why Medium: A parent in the chain could not be resolved.
Second maintenance fee unpaid; grace period ended.
Filed Apr 4, 2006 as application 11/396,914 · Granted Feb 22, 2011
Base term, 20 years from filing
Today
Lapsed Feb 22, 2019
2005
2026
Clock starts
Sep 20, 2005
Sep 20, 2005
No longer in force
Feb 22, 2019
Feb 22, 2019
Granted
Feb 22, 2011
Feb 22, 2011
Term would have run to
Sep 20, 2025
Sep 20, 2025
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
44
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 20, 2025: its 20-year base term, with no adjustment for prosecution delay. 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 Sep 20, 2005, when application 11/229,835, the earliest non-provisional in its chain, was filed (this one was filed Apr 4, 2006); a parent in its chain could not be resolved (the next row) | Sep 20, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | 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 | 1 of 3 maintenance fees paid | lapsed Feb 22, 2019 | High confidence |
| Computed term end | The steps above, in order | Feb 22, 2019 | 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 | Term ended no later than Nov 2022 | no later than Nov 2022 |
| Application 11/303,992 | Abandoned not computed | not computed |
| US 7,891,154 | this patent 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 |
|---|---|---|---|
| Aug 4, 2006 Reel 18155, frame 531 | Cording, Christopher R. | Afg Industries, Inc. | Assignment of Assignor's Interest |
| Dec 14, 2007 Reel 20261, frame 577 | Afg Industries, Inc. | AGC Flat Glass North America, Inc. | Change of Name |
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.
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Alerts on its grants, lapses and transfers.
Citations
72
later US patents cite this one
That is top 10% 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.