Also listed on NSK Steering Systems Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 25, 2029 · High confidence
20-year base term ended Feb 14, 2026
Held by NSK Steering & Control, Inc.
Filed Mar 27, 2008 as application 11/791,848 · Granted Jun 11, 2013
Base term plus 1410 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Feb 14, 2006
Feb 14, 2006
Term ends
Dec 25, 2029
Dec 25, 2029
Granted
Jun 11, 2013
Jun 11, 2013
base term
patent term adjustment
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
1,410
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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 1410 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 14, 2006, when application PCT/JP2006/302543, the earliest non-provisional in its chain, was filed (this one was filed Mar 27, 2008) | Feb 14, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1410 days, USPTO patent term adjustment record | Dec 25, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 25, 2029 | High confidence |
This family
| US 8,459,077 | this patent Dec 2029 | Dec 2029 |
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 |
|---|---|---|---|
| Mar 27, 2008 Reel 20712, frame 966 | Abe, Shoichi; Watanabe, Yasushi; Shimoii, Kazumi; Tomizawa, Atsushi; Uchida, Mitsutoshi | NSK Ltd.; NSK Steering Systems Co., Ltd.; Sumitomo Metal Industries, Ltd.; Sumitomo Pipe & Tube Co., Ltd. | Assignment of Assignor's Interest |
| Mar 27, 2008 reel/frame not recorded | Abe, Shoichi; Shimoii, Kazumi; Watanabe, Yasushi; Tomizawa, Atsushi; Uchida, Mitsutoshi | NSK Ltd. | Assignment of Assignor's Interest |
| Mar 27, 2008 reel/frame not recorded | Abe, Shoichi; Shimoii, Kazumi; Watanabe, Yasushi; Tomizawa, Atsushi; Uchida, Mitsutoshi | NSK Steering Systems Co., Ltd. | Assignment of Assignor's Interest |
| Mar 27, 2008 reel/frame not recorded | Abe, Shoichi; Shimoii, Kazumi; Watanabe, Yasushi; Tomizawa, Atsushi; Uchida, Mitsutoshi | Sumitomo Metal Industries, Ltd. | Assignment of Assignor's Interest |
| Mar 27, 2008 reel/frame not recorded | Abe, Shoichi; Shimoii, Kazumi; Watanabe, Yasushi; Tomizawa, Atsushi; Uchida, Mitsutoshi | Sumitomo Pipe & Tube Co., Ltd. | Assignment of Assignor's Interest |
| Feb 16, 2013 Reel 29822, frame 706 | Sumitomo Metal Industries, Ltd. | Nippon Steel & Sumitomo Metal Corporation | Merger |
| May 14, 2019 Reel 49257, frame 828 | Nippon Steel & Sumitomo Metal Corporation | Nippon Steel Corporation | Change of Name |
| Apr 9, 2024 Reel 67050, frame 963 | NSK Ltd. | NSK Steering & Control, Inc. | Nunc Pro Tunc Assignment |
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
Dec 2029
Term ends Dec 25, 2029. No further fees fall due before then
Note
The 1410 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
8
later US patents cite this one
That is above the median of utility patents granted in 2013 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.