Collateral for a security interest recorded Dec 16, 2022 (U.S. Bank National Association).

Term ends Feb 23, 2030 · High confidence

Computed 20-year base term

Held by Hoffman Enclosures Inc.

Filed Mar 6, 2009 as application 12/399,428 · Granted Mar 18, 2014

Base term plus 501 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Feb 23, 2030

2008 2030

Clock starts
Oct 10, 2008

Term ends
Feb 23, 2030

Granted
Mar 18, 2014

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

501

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.

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 501 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 Oct 10, 2008, when application 12/249,086, the earliest non-provisional in its chain, was filed (this one was filed Mar 6, 2009)	Oct 10, 2028	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+501 days, USPTO patent term adjustment record	Feb 23, 2030	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	Feb 23, 2030	High confidence

This family

Application 60/978,860	Provisional application no patent term	no patent term
US 8,147,182	In force Nov 2030	Nov 2030
US 8,672,649	this patent Feb 2030	Feb 2030
Application PCT/US2009/036347	PCT application no patent term	no patent term
US 8,876,468	In force Jul 2029	Jul 2029
US 9,458,859	In force May 2030	May 2030
US 11,598,343	In force May 2033	May 2033
US 11,009,033	In force Apr 2029	Apr 2029

8 of 11 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
Apr 29, 2009 Reel 22613, frame 254	Smith, J. Carey; Oleson, Richard A.; Aynsley, Richard M.; Fizer, Richard W.; Langston, John B.; Toy, Mark A.; Klemo, Elios; Flanary, Ron G.; Anderson, Troy A.	Delta T Corporation; Aspen Motion Technologies, Inc.	Assignment of Assignor's Interest
Apr 29, 2009 reel/frame not recorded	Fizer, Richard W.; Langston, John B.; Oleson, Richard A.; Smith, J. Carey; Toy, Mark A.; Anderson, Troy A.; Aynsley, Richard M.; Flanary, Ron G.; Klemo, Elios	Delta T Corporation	Assignment of Assignor's Interest
Apr 29, 2009 reel/frame not recorded	Fizer, Richard W.; Langston, John B.; Oleson, Richard A.; Smith, J. Carey; Toy, Mark A.; Anderson, Troy A.; Aynsley, Richard M.; Flanary, Ron G.; Klemo, Elios	Aspen Motion Technologies, Inc.	Assignment of Assignor's Interest
May 21, 2013 Reel 30460, frame 164	Hoffman Enclosures Inc.	Moog Inc.	Assignment of Assignor's Interest
Jul 21, 2016 Reel 39421, frame 294	Moog Inc.	HSBC Bank USA, National Association	Supplemental Notice of Security Interest in Patents and Patent Applications
Jan 22, 2018 Reel 45108, frame 832	Delta T, LLC (F/K/A Delta T Corporation)	Credit Suisse AG, Cayman Islands Branch, as Collateral Agent	Patent Security Agreement
Apr 26, 2018 Reel 46022, frame 852	Delta T Corporation	Delta T, LLC	Change of Name
Aug 26, 2019 Reel 50166, frame 610	HSBC Bank USA, National Association	Moog Inc.	Release of Security Interest
Oct 22, 2019 Reel 50784, frame 576	Hoffman Enclosures Inc.	Delta T, LLC	Assignment of Assignor's Interest
Oct 22, 2019 Reel 50784, frame 630	Moog, Inc.	Delta T, LLC	Assignment of Assignor's Interest
Jan 22, 2020 Reel 51584, frame 530	Smith, J. Carey; Oleson, Richard A.; Aynsley, Richard M.; Fizer, Richard W.; Langston, John B.; Toy, Mark A.; Klemo, Elios; Flanary, Ron G.; Anderson, Troy A.	Delta T Corporation	Assignment of Assignor's Interest
Jan 22, 2020 Reel 51584, frame 754	Aspen Motion Technologies, Inc.	Hoffman Enclosures Inc.	Merger
Jan 24, 2020 Reel 52065, frame 630	Smith, J. Carey; Oleson, Richard A.; Aynsley, Richard M.; Fizer, Richard W.; Langston, John B.; Toy, Mark A.; Klemo, Elios; Flanary, Ron G.; Anderson, Troy A.	Delta T Corporation; Aspen Motion Technologies, Inc.	Corrective Assignment to Correct the Number of Assignee's Previously Recorded on Reel 051584 Frame 0530. Assignor(S) Hereby Confirms the Assignment.
Jan 24, 2020 reel/frame not recorded	Fizer, Richard W.; Langston, John B.; Oleson, Richard A.; Smith, J. Carey; Toy, Mark A.; Anderson, Troy A.; Aynsley, Richard M.; Flanary, Ron G.; Klemo, Elios	Delta T Corporation	Corrective Assignment to Correct the Number of Assignee's Previously Recorded on Reel 051584 Frame 0530. Assignor(S) Hereby Confirms the Assignment.
Jan 24, 2020 reel/frame not recorded	Fizer, Richard W.; Langston, John B.; Oleson, Richard A.; Smith, J. Carey; Toy, Mark A.; Anderson, Troy A.; Aynsley, Richard M.; Flanary, Ron G.; Klemo, Elios	Aspen Motion Technologies, Inc.	Corrective Assignment to Correct the Number of Assignee's Previously Recorded on Reel 051584 Frame 0530. Assignor(S) Hereby Confirms the Assignment.
Jul 26, 2021 Reel 57606, frame 105	Credit Suisse AG, Cayman Islands Branch, as Collateral Agent	Delta T, LLC (F/K/A Delta T Corporation)	Release of Security Interest in Patents Previously Recorded at Reel/Frame (045108/0832)
Dec 16, 2022 Reel 62142, frame 205	Delta T, LLC	U.S. Bank National Association, as Collateral Agent	Security Interest
Dec 16, 2022 Reel 62142, frame 273	Delta T, LLC	Goldman Sachs Bank USA, as Collateral Agent	Security Interest
Jul 16, 2026 Reel 76506, frame 387	Goldman Sachs Bank USA, as Existing Agent	Wells Fargo Bank, National Association, as Successor Agent	Assignment of Patent Security Agreement, Recorded on December 16, 2022 at Reel/Frame 62142/0273

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

Feb 2030

Term ends Feb 23, 2030. No further fees fall due before then

Note

The 501 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

119

later US patents cite this one

That is top 5% of utility patents granted in 2014 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.

Ceiling Fan System with Brushless Motor