Term ends Jul 22, 2028 · High confidence
20-year base term ends Oct 24, 2027
Held by Denso Corporation and Nippon Soken, Inc.
Filed Oct 24, 2007 as application 11/877,913 · Granted Feb 22, 2011
Base term plus 569 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2007
2028
Clock starts
Oct 24, 2007
Oct 24, 2007
Term ends
Jul 22, 2028
Jul 22, 2028
Granted
Feb 22, 2011
Feb 22, 2011
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
569
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 7,768,184.
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.
48
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 569 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Oct 24, 2007, when this application, 11/877,913, was filed | Oct 24, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +569 days, USPTO patent term adjustment record | May 15, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,768,184) | capped to Jul 22, 2028 | 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 | Jul 22, 2028 | High confidence |
This family
| US 7,449,822 | Term ended Jul 2025 | Jul 2025 |
| US 7,535,733 | In force Oct 2027 | Oct 2027 |
| US 7,605,110 | Lapsed on the fee record Oct 2013 | Oct 2013 |
| Application 11/808,977 | Abandoned not computed | not computed |
| US 7,567,051 | Lapsed on the fee record Jul 2013 | Jul 2013 |
| US 7,783,401 | Lapsed on the fee record Aug 2022 | Aug 2022 |
| US 7,444,228 | Lapsed on the fee record Oct 2020 | Oct 2020 |
| US 7,893,604 | this patent Jul 2028 | Jul 2028 |
8 of 48 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 |
|---|---|---|---|
| Oct 24, 2007 reel/frame not recorded | Hanashi, Ken; Takeuchi, Takayuki | Denso Corporation | Assignment of Assignor's Interest |
| Oct 24, 2007 reel/frame not recorded | Hanashi, Ken; Takeuchi, Takayuki | Nippon Soken, Inc. | Assignment of Assignor's Interest |
| Oct 24, 2007 Reel 20006, frame 641 | Takeuchi, Takayuki; Hanashi, Ken | Denso Corporation; Nippon Soken, 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
Jul 2028
Term ends Jul 22, 2028. No further fees fall due before then
Note
The 569 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 7,768,184.
Citations
4
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.