Lapsed Aug 7, 2024 on the fee record · High confidence
20-year base term ends Feb 16, 2029
Third maintenance fee unpaid; grace period ended.
Held by Toto Ltd.
Filed Aug 12, 2010 as application 12/855,504 · Granted Aug 7, 2012
Base term, 20 years from filing, plus 174 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 7, 2024
2009
2029
Clock starts
Feb 16, 2009
Feb 16, 2009
No longer in force
Aug 7, 2024
Aug 7, 2024
Granted
Aug 7, 2012
Aug 7, 2012
Term would have run to
Aug 9, 2029
Aug 9, 2029
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
174
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.
23
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 Aug 9, 2029: its 20-year base term plus 174 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 Feb 16, 2009, when application PCT/JP2009/052542, the earliest non-provisional in its chain, was filed (this one was filed Aug 12, 2010) | Feb 16, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +174 days, USPTO patent term adjustment record | Aug 9, 2029 | 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 | lapsed Aug 7, 2024 | High confidence |
| Computed term end | The steps above, in order | Aug 7, 2024 | High confidence |
This family
| US 8,510,876 | Lapsed on the fee record Aug 2017 | Aug 2017 |
| US 8,235,353 | this patent Aug 2024 | Aug 2024 |
| US 8,534,318 | Lapsed on the fee record Sep 2021 | Sep 2021 |
| Application 12/886,116 | Abandoned not computed | not computed |
| US 8,745,772 | In force Aug 2032 | Aug 2032 |
| US 9,062,444 | In force Jun 2033 | Jun 2033 |
| US 8,695,126 | In force Jul 2032 | Jul 2032 |
| US 10,648,164 | In force Sep 2033 | Sep 2033 |
8 of 23 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 20, 2010 Reel 25015, frame 933 | Miyagi, Takafumi; Miura, Shoji | 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 174 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2012 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.