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Lubricant Free, Reduced Mass, Free-Piston, Stirling Machine Having Reciprocating Piston Drivingly Linked to Rotary Electromagnetic Transducer Moving in Rotational Oscillation

US 8,713,934 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Jan 29, 2016 (Midwest Community Development Fund IX, L.L.C.).

Term ends Jan 13, 2032 · High confidence

Filed Oct 28, 2010 as application 12/914,087 · Granted May 6, 2014
Base term plus 442 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2010 2032
Clock starts
Oct 28, 2010
Term ends
Jan 13, 2032
Granted
May 6, 2014
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
442
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 442 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Oct 28, 2010, when this application, 12/914,087, was filedOct 28, 2030High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+442 days, USPTO patent term adjustment recordJan 13, 2032High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJan 13, 2032High confidence

This family

Application PCT/US2010/054437PCT application
no patent term
no patent term
US 8,713,934this patent
Jan 2032
Jan 2032
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
Jan 4, 2011
Reel 25579, frame 376
Berchowitz, David M.Global Cooling, Inc.Assignment of Assignor's Interest
Jan 29, 2016
Reel 37617, frame 364
Global Cooling, Inc.Midwest Community Development Fund IX, L.L.C.Security Interest
Nov 21, 2017
Reel 44189, frame 201
Global Cooling, Inc.Pacific Western BankSecurity Interest
Dec 11, 2018
Reel 47746, frame 427
Global Cooling, Inc.Midwest Community Development Fund IX, L.L.C.; Advantage Capital Community Development Fund Xxxii, L.L.C.Security Interest
Dec 11, 2018
reel/frame not recorded
Global Cooling, Inc.Midwest Community Development Fund IX, L.L.C.Security Interest
Dec 11, 2018
reel/frame not recorded
Global Cooling, Inc.Advantage Capital Community Development Fund Xxxii, L.L.C.Security Interest
Dec 18, 2020
Reel 54689, frame 619
Global Cooling, Inc.; Global Cooling B.V.Midcap Business Credit LLCSecurity Interest
Dec 18, 2020
Reel 54807, frame 650
Pacific Western BankGlobal Cooling, Inc.Release of Security Interest
Feb 17, 2021
Reel 55296, frame 607
Global Cooling, Inc.Advantage Capital Community Development Fund Xxxii, L.L.C.; Advantage Capital Community Development Fund Xxxiii, L.L.C.Security Interest
Feb 17, 2021
reel/frame not recorded
Global Cooling, Inc.Advantage Capital Community Development Fund Xxxii, L.L.C.Security Interest
Feb 17, 2021
reel/frame not recorded
Global Cooling, Inc.Advantage Capital Community Development Fund Xxxiii, L.L.C.Security Interest
Nov 5, 2021
Reel 58034, frame 799
Midcap Business Credit LLCEMD Acquisition LLCRelease of Security Interest
Sep 23, 2022
Reel 61190, frame 777
Advantage Capital Community Development Fund Xxxii, L.L.C.; Advantage Capital Community Development Fund Xxxiii, L.L.C.Global Cooling, Inc.Release of Security Interest
Sep 10, 2025
Reel 72212, frame 451
Global Cooling, Inc.Banc of CaliforniaSecurity 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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