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System and Method for Damping Vibration in a Drill String Using a Magnetorheological Damper

US 9,976,360 In force
OverviewFamilyAssignmentsSources & methods

Term ends Nov 4, 2030 · High confidence

Held by APS Tech LLC
Filed Sep 8, 2011 as application 13/228,376 · Granted May 22, 2018
Base term plus 609 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2009 2030
Clock starts
Mar 5, 2009
Term ends
Nov 4, 2030
Granted
May 22, 2018
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
609
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
4
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 609 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Mar 5, 2009, when application 12/398,983, the earliest non-provisional in its chain, was filed (this one was filed Sep 8, 2011)Mar 5, 2029High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+609 days, USPTO patent term adjustment recordNov 4, 2030High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 4, 2030High confidence

This family

US 8,087,476In force
Dec 2029
Dec 2029
Application PCT/US2010/025897PCT application
no patent term
no patent term
US 9,976,360this patent
Nov 2030
Nov 2030
Application PCT/US2012/054207PCT application
no patent term
no patent term
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
Dec 22, 2011
Reel 27435, frame 761
Wassell, Mark Ellsworth; Burgess, Daniel E.; Barbely, Jason R.; Thompson, Fred LamarAPS Technology, Inc.Assignment of Assignor's Interest
Oct 10, 2017
Reel 44169, frame 53
APS Technology, Inc.; APS Industries, Inc.; Apst International, Inc.Balance Point Capital Partners III, LPSecurity Interest
Feb 7, 2019
Reel 48375, frame 848
APS Technology, Inc.; APS Industries, Inc.; Apst International, Inc.Keybank National AssociationSecurity Interest
Feb 7, 2019
Reel 49856, frame 434
APS Technology, Inc.; APS Industries, Inc.; Apst International, Inc.Balance Point Capital Partners III, LPAmended and Restated Intellectual Property Security Agreement
Jan 17, 2024
Reel 66341, frame 846
APS Technology LLCBalance Point Capital Partners III, LP, as AgentSecurity Interest
Feb 1, 2024
Reel 66405, frame 762
Keybank National AssociationAPS Technology Inc.; APS Industries Inc.; Apst International Inc.Release of Security Interest
Feb 1, 2024
reel/frame not recorded
Keybank National AssociationAPS Technology Inc.Release of Security Interest
Feb 1, 2024
reel/frame not recorded
Keybank National AssociationAPS Industries Inc.Release of Security Interest
Feb 1, 2024
reel/frame not recorded
Keybank National AssociationApst International Inc.Release of Security Interest
Oct 7, 2025
Reel 73016, frame 572
APS Technology LLCAPS Tech LLCAssignment 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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