Also listed on Geo Specialty Chemicals, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jul 1, 2027 · High confidence
20-year base term ended May 9, 2025
Held by Arkema Inc.
Filed Nov 21, 2006 as application 11/562,109 · Granted Apr 27, 2010
Base term plus 783 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
May 9, 2005
May 9, 2005
Term ends
Jul 1, 2027
Jul 1, 2027
Granted
Apr 27, 2010
Apr 27, 2010
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
783
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 783 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 May 9, 2005, when application 11/124,796, the earliest non-provisional in its chain, was filed (this one was filed Nov 21, 2006) | May 9, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +783 days, USPTO patent term adjustment record | Jul 1, 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 1, 2027 | High confidence |
This family
| US 7,160,958 | Term ended May 2025 | May 2025 |
| US 7,705,091 | this patent Jul 2027 | Jul 2027 |
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 |
|---|---|---|---|
| Dec 8, 2006 Reel 18603, frame 864 | Dluzneski, Peter R. | Geo Specialty Chemicals, Inc. | Assignment of Assignor's Interest |
| Feb 6, 2007 Reel 18855, frame 797 | Geo Specialty Chemicals, Inc. | The Cit Group/Business Credit, Inc. | Security Agreement |
| Mar 19, 2007 Reel 19019, frame 894 | Geo Specialty Chemicals, Inc. | Wells Fargo Bank, National Association | Security Agreement |
| Mar 19, 2007 Reel 19019, frame 899 | Geo Specialty Chemicals, Inc. | The Cit Group/Business Credit, Inc. | Security Agreement |
| Feb 19, 2009 Reel 22277, frame 265 | Wells Fargo Bank National Association | Geo Specialty Chemicals, Inc. | Notice of Release of Security Interest in Patents |
| Feb 19, 2009 Reel 22277, frame 287 | The Cit Group/Business Credit, Inc. | Geo Specialty Chemicals, Inc. | Release of Security Interest |
| Apr 2, 2009 Reel 22494, frame 9 | Geo Specialty Chemicals, Inc. | Arkema Inc. | 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
Jul 2027
Term ends Jul 1, 2027. No further fees fall due before then
Note
The 783 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 2010 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.