Also listed on BASF Corporation, which filed it. The recorded assignments below show how it moved.
Term ends Jul 9, 2027 · High confidence
20-year base term ended Nov 21, 2025
Filed Nov 21, 2005 · Granted May 25, 2010
Base term plus 595 days of PTA
Today
2005
2027
Clock starts
Nov 21, 2005
Nov 21, 2005
Term ends
Jul 9, 2027
Jul 9, 2027
Granted
May 25, 2010
May 25, 2010
base term
patent term adjustment
fee events
Updated Nov 1, 2026 · includes USPTO assignment & status data published Nov 1, 2026 and grant & fee data published Oct 27, 2026 (weekly) · how we know
595
Days of term adjustment
Read from the USPTO PTA 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
Applications in this family
Applications sharing this one's continuity chain.
This patent's term runs 595 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 Nov 21, 2005 | Nov 21, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +595 days, USPTO PTA record | Jul 9, 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 | Jul 9, 2027 | High confidence |
This family
| US 7,723,262 | this patent Jul 2027 | Jul 2027 |
| Application PCT/US2006/044524 | Pending not computed | not computed |
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 14, 2006 Reel 17474, frame 468 | Cao, Guozhong | Washington, University Of | Assignment of Assignor's Interest |
| Jun 12, 2008 Reel 21086, frame 598 | Feaver, Aaron M. | ENERG2, LLC | Assignment of Assignor's Interest |
| Aug 5, 2010 Reel 24795, frame 462 | ENERG2 LLC | ENERG2, Inc. | Change of Name |
| Sep 18, 2013 Reel 31240, frame 480 | ENERG2, Inc. | Comerica Bank | Security Agreement |
| Sep 18, 2018 Reel 46898, frame 457 | ENERG2 Inc. | BASF SE | Assignment of Assignor's Interest |
| Jan 24, 2025 Reel 70001, frame 877 | BASF SE | BASF Catalysts LLC | Nunc Pro Tunc Assignment |
| Jan 24, 2025 Reel 70002, frame 453 | BASF Catalysts LLC | BASF Mobile Emissions Catalysts LLC | Nunc Pro Tunc Assignment |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
Maintenance fee events come from USPTO's own fee records. USPTO does not publish a per-patent fee page, so there is nothing to link to.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2027
Term ends Jul 9, 2027. No further fees fall due before then
Note
The 595 days of PTA are read from the USPTO record, not recalculated by us
Citations
96
later US patents cite this one
That is top 10% of utility patents granted in 2010 in our data, the only group it is compared against.
How we rank
Every date shows its work: base rule, PTA, PTE, disclaimer caps, fee overlay, 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.