Lapsed Mar 8, 2015 on the fee record · Medium confidence
20-year base term ended Sep 14, 2025
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 7,443,502), so the cap could be lower.
First maintenance fee unpaid; grace period ended.
Held by Rohm Co., Ltd.
Filed Sep 14, 2005 as application 11/225,044 · Granted Mar 8, 2011
Base term, 20 years from filing, plus 1014 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Mar 8, 2015
2005
2026
Clock starts
Sep 14, 2005
Sep 14, 2005
No longer in force
Mar 8, 2015
Mar 8, 2015
Granted
Mar 8, 2011
Mar 8, 2011
Term would have run to
Nov 18, 2025
Nov 18, 2025
base term
patent term adjustment
after the term ends
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
1,014
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,443,502, US 7,636,162.
0 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.
52
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Nov 18, 2025: its 20-year base term plus 1014 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. Confidence: Medium. 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 14, 2005, when this application, 11/225,044, was filed | Sep 14, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1014 days, USPTO patent term adjustment record | Jun 24, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,443,502, US 7,636,162) | capped to Nov 18, 2025 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Mar 8, 2015 | High confidence |
| Computed term end | The steps above, in order | Mar 8, 2015 | Medium confidence |
This family
| US 6,707,535 | Lapsed on the fee record Mar 2016 | Mar 2016 |
| Application 11/042,165 | Abandoned not computed | not computed |
| US 7,981,689 | In force Nov 2027 | Nov 2027 |
| US 7,901,631 | this patent Mar 2015 | Mar 2015 |
| US 7,443,502 | Lapsed on the fee record Oct 2020 | Oct 2020 |
| US 7,400,406 | Lapsed on the fee record Jul 2020 | Jul 2020 |
| Application 11/755,403 | Abandoned not computed | not computed |
| US 7,688,449 | In force Jul 2027 | Jul 2027 |
8 of 52 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 |
|---|---|---|---|
| Sep 14, 2005 Reel 16992, frame 607 | Matsumoto, Shigeki; Noxawa, Shigenori | Ushiodenki Kabushiki Kaisha | Assignment of Assignor's Interest |
| May 3, 2006 Reel 17580, frame 40 | Matsumoto, Shigeki; Nozawa, Shigenori | Ushiodenki Kabushiki Kaisha | Corrective Assignment to Correct the 2ND Assignor's Name Previously Recorded on Reel 016992 Frame 0607. Assignor Confirms the Assignment. |
| May 16, 2011 Reel 26281, frame 867 | Ushiodenki Kabushiki Kaisha | Rohm 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 1014 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,443,502, US 7,636,162.
Citations
0
later US patents cite this one
That is below the median 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.