Term ends Oct 21, 2031 · Medium confidence
20-year base term ends Feb 17, 2029
Why Medium: A parent in the chain could not be resolved.
Held by UOP LLC
Filed Mar 18, 2011 as application 13/051,682 · Granted Jul 7, 2015
Base term plus 976 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Feb 17, 2009
Feb 17, 2009
Term ends
Oct 21, 2031
Oct 21, 2031
Granted
Jul 7, 2015
Jul 7, 2015
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
976
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.
23
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 976 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Feb 17, 2009, when application 12/372,604, the earliest non-provisional in its chain, was filed (this one was filed Mar 18, 2011); a parent in its chain could not be resolved (the next row) | Feb 17, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +976 days, USPTO patent term adjustment record | Oct 21, 2031 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 21, 2031 | Medium confidence |
This family
| US 9,021,831 | In force Jul 2032 | Jul 2032 |
| Application PCT/US2010/021364 | PCT application no patent term | no patent term |
| US 9,080,811 | In force Mar 2032 | Mar 2032 |
| Application PCT/US2010/026185 | PCT application no patent term | no patent term |
| US 8,881,549 | In force Apr 2032 | Apr 2032 |
| Application PCT/US2010/029331 | PCT application no patent term | no patent term |
| US 9,933,207 | In force Jun 2032 | Jun 2032 |
| Application PCT/US2010/033374 | PCT application no patent term | no patent term |
8 of 23 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 |
|---|---|---|---|
| Jun 8, 2011 Reel 26409, frame 956 | Johnke, Andrew F.; Lewis, W. Larry; Tyler, L. Don; Wilkinson, John D.; Lynch, Joe T.; Hudson, Hank M.; Cuellar, Kyle T. | S.M.E. Products LLP; Ortloff Engineers, Ltd. | Assignment of Assignor's Interest |
| Jun 8, 2011 reel/frame not recorded | Hudson, Hank M.; Lynch, Joe T.; Tyler, L. Don; Wilkinson, John D.; Johnke, Andrew F.; Lewis, W. Larry; Cuellar, Kyle T. | S.M.E. Products LLP | Assignment of Assignor's Interest |
| Jun 8, 2011 reel/frame not recorded | Hudson, Hank M.; Lynch, Joe T.; Tyler, L. Don; Wilkinson, John D.; Johnke, Andrew F.; Lewis, W. Larry; Cuellar, Kyle T. | Ortloff Engineers, Ltd. | Assignment of Assignor's Interest |
| Sep 24, 2020 Reel 54188, frame 807 | Ortloff Engineers, Ltd. | UOP LLC | Assignment 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Oct 2031
Term ends Oct 21, 2031. Maintenance fees still fall due before then
Note
The 976 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
44
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.