Term ends Oct 4, 2028 · High confidence
20-year base term ended Nov 11, 2025
Filed Jul 11, 2007 as application 11/792,285 · Granted Aug 19, 2014
Base term plus 1058 days of patent term adjustment (USPTO delay)
Today
2005
2028
Clock starts
Nov 11, 2005
Nov 11, 2005
Term ends
Oct 4, 2028
Oct 4, 2028
Granted
Aug 19, 2014
Aug 19, 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
1,058
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.
19
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 1058 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 11, 2005, when application PCT/EP2005/012199, the earliest non-provisional in its chain, was filed (this one was filed Jul 11, 2007) | Nov 11, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1058 days, USPTO patent term adjustment record | Oct 4, 2028 | 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 | Oct 4, 2028 | High confidence |
This family
| US 8,808,517 | this patent Oct 2028 | Oct 2028 |
| US 7,534,883 | Term ended Jan 2026 | Jan 2026 |
| Application 11/885,666 | Abandoned not computed | not computed |
| US 7,700,012 | Term ended Oct 2026 | Oct 2026 |
| US 7,893,298 | Term ended Sep 2026 | Sep 2026 |
| US 8,236,086 | In force Feb 2028 | Feb 2028 |
| US 8,283,494 | In force Jul 2028 | Jul 2028 |
| US 8,506,671 | In force Jan 2030 | Jan 2030 |
8 of 19 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 |
|---|---|---|---|
| Jul 11, 2007 reel/frame not recorded | Krijgsman, John; Erben, Axel; Liebig, Winfried; Meessen, Jozef Hubert | DSM IP Assets B.V. | Assignment of Assignor's Interest |
| Jul 11, 2007 reel/frame not recorded | Krijgsman, John; Erben, Axel; Liebig, Winfried; Meessen, Jozef Hubert | Uhde GmbH | Assignment of Assignor's Interest |
| Jul 11, 2007 Reel 19642, frame 194 | Meessen, Jozef Hubert; Erben, Axel; Krijgsman, John; Liebig, Winfried | DSM IP Assets B.V.; Uhde GmbH | Assignment of Assignor's Interest |
| Sep 10, 2010 Reel 24982, frame 110 | DSM IP Assets B.V. | Stamicarbon B.V. | Assignment of Assignor's Interest |
| Aug 12, 2014 Reel 33514, frame 955 | Uhde GmbH | Thyssenkrupp Uhde GmbH | Change of Name |
| Aug 13, 2014 Reel 33528, frame 4 | Thyssenkrupp Uhde GmbH; Thyssenkrupp Resource Technologies GmbH; Thyssenkrupp Resource Technologies GmbH | Thyssenkrupp Industrial Solutions GmbH | Merger and Change of Name |
| Aug 14, 2014 Reel 33539, frame 56 | Thyssenkrupp Industrial Solutions GmbH | Thyssenkrupp Industrial Solutions AG | Change of Name |
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 2028
Term ends Oct 4, 2028. No further fees fall due before then
Note
The 1058 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median 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.