Term ended Jun 26, 2025 · High confidence
20-year base term ended Apr 20, 2025
Held by Mitsubishi Denki Kabushik Kaisha
Filed Apr 20, 2005 as application 11/109,788 · Granted Oct 14, 2008
Base term plus 67 days of patent term adjustment (USPTO delay)
Today
Term ended Jun 26, 2025
2005
2026
Clock starts
Apr 20, 2005
Apr 20, 2005
Term ended
Jun 26, 2025
Jun 26, 2025
Granted
Oct 14, 2008
Oct 14, 2008
base term
patent term adjustment
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
67
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.
18
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 67 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 Apr 20, 2005, when this application, 11/109,788, was filed | Apr 20, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +67 days, USPTO patent term adjustment record | Jun 26, 2025 | 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 | Jun 26, 2025 | High confidence |
This family
| US 7,102,294 | Lapsed on the fee record Sep 2010 | Sep 2010 |
| Application 11/028,732 | Abandoned not computed | not computed |
| US 7,101,793 | Lapsed on the fee record Sep 2018 | Sep 2018 |
| US 7,176,744 | Term ended May 2025 | May 2025 |
| US 7,436,672 | this patent Jun 2025 | Jun 2025 |
| US 7,535,522 | In force Nov 2026 | Nov 2026 |
| US 7,812,402 | In force Jan 2029 | Jan 2029 |
| US 7,244,969 | Term ended Sep 2025 | Sep 2025 |
8 of 18 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 |
|---|---|---|---|
| Apr 20, 2005 Reel 16497, frame 824 | Ushijima, Koichi; Hassan, Hussein Khalid; Miyamoto, Noboru | Mitsubishi Denki Kabushiki Kaisha; Renesas Device Design Corp. | Assignment of Assignor's Interest |
| Apr 20, 2005 reel/frame not recorded | Hassan, Hussein Khalid; Miyamoto, Noboru; Ushijima, Koichi | Mitsubishi Denki Kabushiki Kaisha | Assignment of Assignor's Interest |
| Apr 20, 2005 reel/frame not recorded | Hassan, Hussein Khalid; Miyamoto, Noboru; Ushijima, Koichi | Renesas Device Design Corp. | Assignment of Assignor's Interest |
| Oct 5, 2005 Reel 17061, frame 261 | Kaisha, Mitsubishi Denki Kabushiki; Renesas Device Design Corp. | Mitsubishi Denki Kabushik Kaisha | 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 67 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
61
later US patents cite this one
That is top 25% 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.