Term ends Feb 16, 2033 · High confidence
20-year base term ends Feb 18, 2031
Held by Toto Ltd.
Filed Feb 18, 2011 as application 13/030,686 · Granted Nov 3, 2015
Base term plus 729 days of patent term adjustment (USPTO delay)
Today
2011
2033
Clock starts
Feb 18, 2011
Feb 18, 2011
Term ends
Feb 16, 2033
Feb 16, 2033
Granted
Nov 3, 2015
Nov 3, 2015
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
729
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
This patent's term runs 729 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Feb 18, 2011, when this application, 13/030,686, was filed | Feb 18, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +729 days, USPTO patent term adjustment record | Feb 16, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 16, 2033 | High confidence |
This family
| US 8,835,069 | Lapsed on the fee record 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 | this patent 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 18, 2011 Reel 25984, frame 799 | Ukigai, Kiyotake; Sato, Minoru; Ohashi, Takahiro; Aihara, Yutaka; Okamoto, Minami; Nagata, Katsuya | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2033
Term ends Feb 16, 2033. Maintenance fees still fall due before then
Note
The 729 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is above the median of utility patents granted in 2015 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.