Also listed on Thyssenkrupp Rasselstein GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 27, 2036 · High confidence
20-year base term ends May 11, 2035
Held by JFE Steel Corporation and Thyssenkrupp Rasselstein GmbH
Filed Nov 23, 2016 as application 15/313,729 · Granted May 28, 2019
Base term plus 261 days of patent term adjustment (USPTO delay)
Today
2015
2036
Clock starts
May 11, 2015
May 11, 2015
Term ends
Jan 27, 2036
Jan 27, 2036
Granted
May 28, 2019
May 28, 2019
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
261
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.
2
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 261 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 May 11, 2015, when application PCT/JP2015/063460, the earliest non-provisional in its chain, was filed (this one was filed Nov 23, 2016) | May 11, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +261 days, USPTO patent term adjustment record | Jan 27, 2036 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Jan 27, 2036 | High confidence |
This family
| US 10,301,702 | this patent Jan 2036 | Jan 2036 |
1 of 2 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 |
|---|---|---|---|
| Nov 23, 2016 reel/frame not recorded | Nakagawa, Yusuke; Tada, Masaki; Kojima, Katsumi; Tanaka, Takumi; Nakamaru, Hiroki; Kaup, Burkhard; Stein-fechner, Kathleen | JFE Steel Corporation | Assignment of Assignor's Interest |
| Nov 23, 2016 reel/frame not recorded | Nakagawa, Yusuke; Tada, Masaki; Kojima, Katsumi; Tanaka, Takumi; Nakamaru, Hiroki; Kaup, Burkhard; Stein-fechner, Kathleen | Thyssenkrupp Rasselstein GmbH | Assignment of Assignor's Interest |
| Nov 23, 2016 Reel 40410, frame 279 | Tanaka, Takumi; Nakagawa, Yusuke; Tada, Masaki; Kojima, Katsumi; Nakamaru, Hiroki; Stein-fechner, Kathleen; Kaup, Burkhard | JFE Steel Corporation; Thyssenkrupp Rasselstein GmbH | 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
Jan 2036
Term ends Jan 27, 2036. Maintenance fees still fall due before then
Note
The 261 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 2019 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.