Also listed on Thyssenkrupp Electrical Steel GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 27, 2033 · High confidence
20-year base term ends May 27, 2033
Held by Nippon Steel Corporation
Filed Aug 7, 2015 as application 14/766,560 · Granted Sep 13, 2022
Base term, 20 years from filing
Today
2013
2033
Clock starts
May 27, 2013
May 27, 2013
Term ends
May 27, 2033
May 27, 2033
Granted
Sep 13, 2022
Sep 13, 2022
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
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 is its 20-year base term, with no adjustment for prosecution delay. 1 of 2 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 27, 2013, when application PCT/EP2013/060874, the earliest non-provisional in its chain, was filed (this one was filed Aug 7, 2015) | May 27, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 27, 2033 | High confidence |
This family
| US 11,440,846 | this patent May 2033 | May 2033 |
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 |
|---|---|---|---|
| Dec 2, 2015 reel/frame not recorded | Lahn, Ludger; Lemaitre, Regis; Schepers, Carsten; Kanehashi, Koji; Sato, Hirohiko; Takahashi, Masaru; Takeda, Kazutoshi; Yamazaki, Shuichi | Thyssenkrupp Electrical Steel GmbH | Assignment of Assignor's Interest |
| Dec 2, 2015 reel/frame not recorded | Lahn, Ludger; Lemaitre, Regis; Schepers, Carsten; Kanehashi, Koji; Sato, Hirohiko; Takahashi, Masaru; Takeda, Kazutoshi; Yamazaki, Shuichi | Nippon Steel & Sumitomo Metal Corporation | Assignment of Assignor's Interest |
| Dec 2, 2015 Reel 37190, frame 526 | Lemaitre, Regis; Lahn, Ludger; Schepers, Carsten; Yamazaki, Shuichi; Takeda, Kazutoshi; Takahashi, Masaru; Sato, Hirohiko; Kanehashi, Koji | Thyssenkrupp Electrical Steel GmbH; Nippon Steel & Sumitomo Metal Corporation | Assignment of Assignor's Interest |
| May 14, 2019 Reel 49257, frame 828 | Nippon Steel & Sumitomo Metal Corporation | Nippon Steel Corporation | Change of Name |
| Nov 3, 2021 Reel 58007, frame 800 | Thyssenkrupp Electrical Steel GmbH | Nippon Steel Corporation | 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
May 2033
Term ends May 27, 2033. Maintenance fees still fall due before then
Citations
3
later US patents cite this one
That is above the median of utility patents granted in 2022 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.