Term ends Nov 30, 2026 · High confidence
20-year base term ended Nov 30, 2024
Held by Socionext Inc.
Filed Nov 30, 2004 as application 10/998,587 · Granted May 6, 2008
Base term plus 730 days of patent term adjustment (USPTO delay)
Today
2004
2026
Clock starts
Nov 30, 2004
Nov 30, 2004
Term ends
Nov 30, 2026
Nov 30, 2026
Granted
May 6, 2008
May 6, 2008
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
730
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 730 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 Nov 30, 2004, when this application, 10/998,587, was filed | Nov 30, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +730 days, USPTO patent term adjustment record | Nov 30, 2026 | 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 | Nov 30, 2026 | 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 |
|---|---|---|---|
| Mar 4, 2005 Reel 16336, frame 322 | Higuchi, Tsuyoshi; Funakoshi, Jun; Yamagata, Seiji; Mizuguchi, Toshitaka; Yamamoto, Katsuyoshi | Fujitsu Limited | Assignment of Assignor's Interest |
| Dec 12, 2008 Reel 21998, frame 645 | Fujitsu Limited | Fujitsu Microelectronics Limited | Assignment of Assignor's Interest |
| Jul 22, 2010 Reel 24982, frame 245 | Fujitsu Microelectronics Limited | Fujitsu Semiconductor Limited | Change of Name |
| Apr 27, 2015 Reel 35508, frame 469 | Fujitsu Semiconductor Limited | Socionext Inc. | 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
Nov 2026
Term ends Nov 30, 2026. No further fees fall due before then
Note
The 730 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2008 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.