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US

Pumping System with Power Optimization

US 7,686,589 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Apr 11, 2025 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Filed Dec 11, 2006 as application 11/609,029 · Granted Mar 30, 2010
Base term plus 228 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Apr 11, 2025
2004 2026
Clock starts
Aug 26, 2004
Term ended
Apr 11, 2025
Granted
Mar 30, 2010
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
228
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.
41
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 228 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. Confidence: Medium. 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 Aug 26, 2004, when application 10/926,513, the earliest non-provisional in its chain, was filed (this one was filed Dec 11, 2006); a parent in its chain could not be resolved (the next row)Aug 26, 2024High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+228 days, USPTO patent term adjustment recordApr 11, 2025High 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 orderApr 11, 2025Medium confidence

This family

US 7,874,808Lapsed on the fee record
Jan 2023
Jan 2023
US 8,019,479In force
Nov 2028
Nov 2028
US 8,469,675Lapsed on the fee record
Jun 2025
Jun 2025
US 8,480,373In force
Jun 2027
Jun 2027
US 7,854,597Lapsed on the fee record
Dec 2022
Dec 2022
US 7,686,589this patent
Apr 2025
Apr 2025
US 7,845,913Term ended
Aug 2024
Aug 2024
US 8,602,745In force
Mar 2028
Mar 2028
8 of 41 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.
RecordedAssignorAssigneeConveyance
Mar 15, 2007
Reel 19027, frame 559
Stiles, Robert W., JR.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Runarsson, Einar KjartanPentair Water Pool and S.p.A., Inc.; Danfoss Low Power Drives a Division of Danfoss Drives A/SAssignment of Assignor's Interest
Mar 15, 2007
reel/frame not recorded
Stiles, Robert W., JR.; Yahnker, Christopher R.; Robol, Ronald B.; Runarsson, Einar Kjartan; Berthelsen, Lars HoffmannPentair Water Pool and S.p.A., Inc.Assignment of Assignor's Interest
Mar 15, 2007
reel/frame not recorded
Stiles, Robert W., JR.; Yahnker, Christopher R.; Robol, Ronald B.; Runarsson, Einar Kjartan; Berthelsen, Lars HoffmannDanfoss Low Power Drives a Division of Danfoss Drives A/SAssignment of Assignor's Interest
Dec 10, 2019
Reel 51240, frame 490
Stiles, Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Cox, Everett; Steen, Donald; Murphy, Kevin; Woodcock, Walter J., JR.; Hruby, Daniel J.; Westermann-rasmussen, Peter; Kjaer, Gert; Runarsson, Einar Kjartan; Hansen, Arne Fink; Morando, Alberto; Lungeanu, Florin; Harvest, Nils-olePentair Water Pool and S.p.A., Inc.; Danfoss Drives A/SAssignment of Assignor's Interest
Dec 10, 2019
Reel 51240, frame 555
Danfoss Drives A/SDanfoss Power Electronics A/SChange of Name
Dec 10, 2019
reel/frame not recorded
Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, Walter J., JR.; Murphy, Kevin; Hansen, Arne Fink; Runarsson, Einar Kjartan; Westermann-rasmussen, Peter; Harvest, Nils-ole; Kjaer, Gert; Lungeanu, Florin; Morando, Alberto; Berthelsen, Lars HoffmannPentair Water Pool and S.p.A., Inc.Assignment of Assignor's Interest
Dec 10, 2019
reel/frame not recorded
Cox, Everett; Hruby, Daniel J.; Robol, Ronald B.; Steen, Donald; Stiles, Robert W.; Yahnker, Christopher; Woodcock, Walter J., JR.; Murphy, Kevin; Hansen, Arne Fink; Runarsson, Einar Kjartan; Westermann-rasmussen, Peter; Harvest, Nils-ole; Kjaer, Gert; Lungeanu, Florin; Morando, Alberto; Berthelsen, Lars HoffmannDanfoss Drives A/SAssignment 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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