Term ends Dec 20, 2035 · High confidence
20-year base term ends Mar 29, 2033
Held by Wayne Fueling Systems LLC
Filed Mar 29, 2013 as application 13/853,387 · Granted May 4, 2021
Base term plus 996 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Mar 29, 2013
Mar 29, 2013
Term ends
Dec 20, 2035
Dec 20, 2035
Granted
May 4, 2021
May 4, 2021
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
996
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
6
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 996 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 29, 2013, when this application, 13/853,387, was filed | Mar 29, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +996 days, USPTO patent term adjustment record | Dec 20, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 20, 2035 | High confidence |
This family
| US 10,997,814 | this patent Dec 2035 | Dec 2035 |
| Application PCT/US2013/051363 | PCT application no patent term | no patent term |
| Application PCT/US2013/063349 | PCT application no patent term | no patent term |
| US 11,699,319 | In force Jun 2033 | Jun 2033 |
| US 12,125,334 | In force Mar 2033 | Mar 2033 |
| US 12,682,717 | In force Mar 2033 | Mar 2033 |
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 |
|---|---|---|---|
| Mar 29, 2013 Reel 30115, frame 426 | Chittenden Jr., Thomas Sherfey; Kern, Paul Matthew; Loewy, Bradford Ian; Subramanian, Sethuraman | Dresser, Inc. | Assignment of Assignor's Interest |
| Jun 20, 2014 Reel 33204, frame 680 | Wayne Fueling Systems, LLC | Citibank, N.A., as Collateral Agent | Security Interest |
| Aug 7, 2014 Reel 33484, frame 698 | Dresser, Inc. | Wayne Fueling Systems LLC | Assignment of Assignor's Interest |
| Dec 19, 2016 Reel 41032, frame 148 | Citibank, N.a. | Wayne Fueling Systems LLC | Termination of Security Interest in Patent Collateral (Second Lien - Releases RF 033204-0647) |
| Dec 19, 2016 Reel 41032, frame 261 | Citibank, N.a. | Wayne Fueling Systems LLC | Termination of Security Interest in Patent Collateral (First Lien - Releases RF 033204-0647) |
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
Dec 2035
Term ends Dec 20, 2035. Maintenance fees still fall due before then
Note
The 996 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
27
later US patents cite this one
That is top 5% of utility patents granted in 2021 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.