Term ended Sep 26, 2025 · High confidence
20-year base term ended Sep 28, 2024
Held by Arkray, Inc.
Filed Oct 19, 2012 as application 13/655,865 · Granted May 31, 2016
Base term plus 363 days of patent term adjustment (USPTO delay)
Today
Term ended Sep 26, 2025
2004
2026
Clock starts
Sep 28, 2004
Sep 28, 2004
Term ended
Sep 26, 2025
Sep 26, 2025
Granted
May 31, 2016
May 31, 2016
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
363
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,354,112, to Sep 26, 2025. The term already ends on or before that date, so the cap shortened nothing.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
3
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 363 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Sep 28, 2004, when application PCT/JP2004/014575, the earliest non-provisional in its chain, was filed (this one was filed Oct 19, 2012) | Sep 28, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +363 days, USPTO patent term adjustment record | Sep 26, 2025 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,354,112) | resolves to Sep 26, 2025, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 26, 2025 | High confidence |
This family
| US 8,354,112 | In force Mar 2027 | Mar 2027 |
| US 9,353,395 | this patent Sep 2025 | Sep 2025 |
2 of 3 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 |
|---|---|---|---|
| Aug 27, 2015 Reel 36440, frame 411 | Sode, Koji | Ultizyme International Ltd. | Assignment of Assignor's Interest |
| Aug 27, 2015 reel/frame not recorded | Ultizyme International Ltd. | Arkray, Inc. | Assignment of Assignor's Interest |
| Aug 27, 2015 reel/frame not recorded | Ultizyme International Ltd. | Ultizyme International Ltd. | Assignment of Assignor's Interest |
| Aug 27, 2015 Reel 36441, frame 99 | Ultizyme International Ltd. | Arkray, Inc.; Ultizyme International Ltd. | Assignment of Assignor's Interest |
| Feb 13, 2023 Reel 62675, frame 251 | Ultizyme International Ltd. | Arkray, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 363 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,354,112, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2016 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.