Term ends Feb 7, 2027 · High confidence
20-year base term ended Jul 31, 2026
Held by Texaco Inc.
Filed Jul 31, 2006 as application 11/496,322 · Granted Aug 19, 2008
Base term plus 191 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Jul 31, 2006
Jul 31, 2006
Term ends
Feb 7, 2027
Feb 7, 2027
Granted
Aug 19, 2008
Aug 19, 2008
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
191
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 191 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 Jul 31, 2006, when this application, 11/496,322, was filed | Jul 31, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +191 days, USPTO patent term adjustment record | Feb 7, 2027 | 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 7, 2027 | High confidence |
This family
| US 7,412,881 | this patent Feb 2027 | Feb 2027 |
| Application PCT/US2007/074736 | PCT 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Oct 23, 2006 Reel 18444, frame 810 | Crawley, Charles Milton; Moca, Steve M.; Kutlik, Roy Lester | Texaco Inc. | Assignment of Assignor's Interest |
| Nov 8, 2006 Reel 18592, frame 847 | Crawley, Charles Milton; Moca, Steve M.; Kutlik, Roy Lester | Chevron U.S.A. Inc. | Re-Record to Correct the Name of the Assignee, Previously Recorded on Reel 018444 Frame 0810. |
| Nov 13, 2006 Reel 18574, frame 363 | Crawley, Charles Milton; Moca, Steve M.; Kutlik, Roy Lester | Chevron U.S.A. Inc. | Corrective Assignment to Correct the Name of the Receiving Party. Document Previoulsy Recorded at Reel 018444 Frame 0810. |
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 2027
Term ends Feb 7, 2027. No further fees fall due before then
Note
The 191 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
20
later US patents cite this one
That is above the median of utility patents granted in 2008 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.