Also listed on OKI Data Infotech Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 27, 2029 · High confidence
20-year base term ends Feb 5, 2029
Held by OKI Electric Industry Co., Ltd.
Filed Feb 5, 2009 as application 12/322,697 · Granted Nov 15, 2011
Base term plus 325 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Feb 5, 2009
Feb 5, 2009
Term ends
Dec 27, 2029
Dec 27, 2029
Granted
Nov 15, 2011
Nov 15, 2011
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
325
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 325 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 Feb 5, 2009, when this application, 12/322,697, was filed | Feb 5, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +325 days, USPTO patent term adjustment record | Dec 27, 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 | Dec 27, 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 |
|---|---|---|---|
| Apr 17, 2009 Reel 22573, frame 822 | Hamano, Yuichiro | Seiko I Infotech Inc. | Assignment of Assignor's Interest |
| Jun 6, 2018 Reel 47447, frame 194 | Seiko I Infotech Inc. | OKI Data Infotech Corporation | Change of Name |
| Jun 6, 2018 Reel 47447, frame 186 | OKI Data Infotech Corporation | OKI Data Corporation | Merger |
| Mar 14, 2022 Reel 59365, frame 145 | OKI Data Corporation | OKI Electric Industry Co., Ltd. | 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
Dec 2029
Term ends Dec 27, 2029. No further fees fall due before then
Note
The 325 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
29
later US patents cite this one
That is top 25% 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.