Also listed on Mitsubishi Denki Kabushiki Kaisha, an earlier holder on the record. The recorded assignments below show how it moved.
Term ended Nov 1, 2026 · High confidence
20-year base term ended Jun 12, 2026
Held by Trivale Technologies
Filed Jun 12, 2006 as application 11/450,332 · Granted May 26, 2009
Base term plus 142 days of patent term adjustment (USPTO delay)
Today
Term ended Nov 1, 2026
2006
2026
Clock starts
Jun 12, 2006
Jun 12, 2006
Term ended
Nov 1, 2026
Nov 1, 2026
Granted
May 26, 2009
May 26, 2009
base term
patent term adjustment
after the term ends
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
142
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 142 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Jun 12, 2006, when this application, 11/450,332, was filed | Jun 12, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +142 days, USPTO patent term adjustment record | Nov 1, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 1, 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 |
|---|---|---|---|
| Jun 12, 2006 Reel 17992, frame 632 | Takeguchi, Toru; Miyakawa, Osamu | Mitsubishi Denki Kabushiki Kaisha | Assignment of Assignor's Interest |
| Jul 15, 2021 Reel 57651, frame 234 | Mitsubishi Electric Corporation | Trivale Technologies | 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.
What's changing
Note
The 142 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2009 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.