Lapsed Aug 8, 2025 on the fee record · High confidence
20-year base term ends Jun 28, 2033
Second maintenance fee unpaid; grace period ended.
Held by Finewell Co., Ltd.
Filed Dec 29, 2014 as application 14/584,206 · Granted Aug 8, 2017
Base term, 20 years from filing, plus 36 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 8, 2025
2013
2033
Clock starts
Jun 28, 2013
Jun 28, 2013
No longer in force
Aug 8, 2025
Aug 8, 2025
Granted
Aug 8, 2017
Aug 8, 2017
Term would have run to
Aug 3, 2033
Aug 3, 2033
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
36
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.
19
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 3, 2033: its 20-year base term plus 36 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 Jun 28, 2013, when application PCT/JP2013/067781, the earliest non-provisional in its chain, was filed (this one was filed Dec 29, 2014) | Jun 28, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +36 days, USPTO patent term adjustment record | Aug 3, 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 | 1 of 3 maintenance fees paid | lapsed Aug 8, 2025 | High confidence |
| Computed term end | The steps above, in order | Aug 8, 2025 | High confidence |
This family
| US 8,521,239 | In force Dec 2031 | Dec 2031 |
| US 8,886,263 | In force Dec 2031 | Dec 2031 |
| US 8,918,149 | In force Dec 2031 | Dec 2031 |
| US 9,479,624 | In force Dec 2031 | Dec 2031 |
| US 9,392,097 | In force Dec 2031 | Dec 2031 |
| US 9,313,306 | In force no later than Dec 2031 | no later than Dec 2031 |
| US 9,729,971 | this patent Aug 2025 | Aug 2025 |
| US 9,716,782 | In force Dec 2031 | Dec 2031 |
8 of 19 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 |
|---|---|---|---|
| Dec 30, 2014 reel/frame not recorded | Morimoto, Masashi; Tanaka, Masahide; Hosoi, Hiroshi; Hosoi, Yoji | Rohm Co., Ltd. | Assignment of Assignor's Interest |
| Dec 30, 2014 reel/frame not recorded | Morimoto, Masashi; Tanaka, Masahide; Hosoi, Hiroshi; Hosoi, Yoji | Finewell Co., Ltd. | Assignment of Assignor's Interest |
| Dec 30, 2014 Reel 34598, frame 75 | Hosoi, Hiroshi; Hosoi, Yoji; Morimoto, Masashi; Tanaka, Masahide | Rohm Co., Ltd.; Finewell Co., Ltd. | Assignment of Assignor's Interest |
| Oct 29, 2018 Reel 47343, frame 367 | Rohm Co., Ltd. | Finewell 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.
What's changing
Note
The 36 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
later US patents cite this one
That is top 25% of utility patents granted in 2017 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.