Lapsed Sep 16, 2022 on the fee record · High confidence
20-year base term ends Mar 31, 2030
Second maintenance fee unpaid; grace period ended.
Held by Toto Ltd.
Filed Mar 31, 2010 as application 12/751,500 · Granted Sep 16, 2014
Base term, 20 years from filing, plus 707 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 16, 2022
2010
2032
Clock starts
Mar 31, 2010
Mar 31, 2010
No longer in force
Sep 16, 2022
Sep 16, 2022
Granted
Sep 16, 2014
Sep 16, 2014
Term would have run to
Mar 7, 2032
Mar 7, 2032
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
707
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
34
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 Mar 7, 2032: its 20-year base term plus 707 days of term adjustment for prosecution delay. 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 Mar 31, 2010, when this application, 12/751,500, was filed | Mar 31, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +707 days, USPTO patent term adjustment record | Mar 7, 2032 | 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 | 1 of 3 maintenance fees paid | lapsed Sep 16, 2022 | High confidence |
| Computed term end | The steps above, in order | Sep 16, 2022 | High confidence |
This family
| US 8,835,069 | this patent Sep 2022 | Sep 2022 |
| US 8,580,459 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 8,667,621 | In force Jan 2033 | Jan 2033 |
| US 9,108,207 | In force Jun 2033 | Jun 2033 |
| US 9,175,460 | In force Feb 2033 | Feb 2033 |
| US 8,444,065 | Lapsed on the fee record May 2025 | May 2025 |
| US 9,328,491 | In force Jun 2034 | Jun 2034 |
| US 8,728,261 | Lapsed on the fee record May 2022 | May 2022 |
8 of 34 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 |
|---|---|---|---|
| Mar 31, 2010 Reel 24168, frame 864 | Ooe, Toshiharu; Nakano, Kiyotaka; Kawamura, Yoshiyuki; Tsuchiya, Katsuhisa; Shigezumi, Tsukasa | Toto 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 707 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 2014 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.