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US

Electrical Substation Monitoring and Diagnostics

US 7,558,703 Term ended
OverviewFamilyAssignmentsSources & methods

Also listed on Hitachi, Ltd., a Corp. of Japan, an earlier holder on the record. The recorded assignments below show how it moved.

Term ended Nov 1, 2026 · High confidence

Filed Nov 1, 2006 as application 11/555,393 · Granted Jul 7, 2009
Base term, 20 years from filing
Today
20 years from filing
Term ended Nov 1, 2026
2006 2026
Clock starts
Nov 1, 2006
Term ended
Nov 1, 2026
Granted
Jul 7, 2009
base term 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
None
Term adjustment
No prosecution delay on this record.
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.
5
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. All three maintenance fees were paid, so no fee lapse ended it. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Nov 1, 2006, when this application, 11/555,393, was filedNov 1, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderNov 1, 2026High confidence

This family

US 7,672,812In force
Jun 2028
Jun 2028
US 7,558,703this patent
Nov 2026
Nov 2026
Application PCT/US2007/022543PCT application
no patent term
no patent term
Application PCT/US2007/022551PCT application
no patent term
no patent term
US 7,725,295Term ended
Nov 2026
Nov 2026
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.
RecordedAssignorAssigneeConveyance
Mar 22, 2007
Reel 19046, frame 718
Stoupis, James; Wang, Zhenyuan; Madwesh, Ajay C.; Lubkeman, David; Mazza, Joe G.; Vu, KhoiABB Research Ltd.Assignment of Assignor's Interest
Dec 26, 2019
Reel 51419, frame 309
ABB Research Ltd.ABB Schweiz AGMerger
Mar 6, 2020
Reel 52916, frame 1
ABB Schweiz AGABB Power Grids Switzerland AGAssignment of Assignor's Interest
Dec 31, 2021
Reel 58666, frame 540
ABB Power Grids Switzerland AGHitachi Energy Switzerland AGChange of Name
Nov 13, 2023
Reel 65549, frame 576
Hitachi Energy Switzerland AGHitachi Energy Ltd.Merger

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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