Term ends Feb 21, 2032 · High confidence
20-year base term ends Sep 28, 2030
Held by Clarion Co., Ltd.
Filed Sep 28, 2010 as application 12/892,670 · Granted Jan 21, 2014
Base term plus 511 days of patent term adjustment (USPTO delay)
Today
2010
2032
Clock starts
Sep 28, 2010
Sep 28, 2010
Term ends
Feb 21, 2032
Feb 21, 2032
Granted
Jan 21, 2014
Jan 21, 2014
base term
patent term adjustment
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
511
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.
2
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 511 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 Sep 28, 2010, when this application, 12/892,670, was filed | Sep 28, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +511 days, USPTO patent term adjustment record | Feb 21, 2032 | 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 | Feb 21, 2032 | High confidence |
This family
| US 8,634,984 | this patent Feb 2032 | Feb 2032 |
| US 9,239,241 | Lapsed on the fee record Jan 2020 | Jan 2020 |
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 |
|---|---|---|---|
| Oct 22, 2010 Reel 25183, frame 83 | Sumizawa, Akio | Clarion Co., Ltd. | Assignment of Assignor's 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
Feb 2032
Term ends Feb 21, 2032. No further fees fall due before then
Note
The 511 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
83
later US patents cite this one
That is top 10% of utility patents granted in 2014 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.