Also listed on Wellman, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 8, 2028 · High confidence
20-year base term ends Nov 14, 2026
Held by Dak Americas Mississippi Inc.
Filed May 13, 2008 as application 12/119,723 · Granted Dec 25, 2012
Base term plus 694 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Nov 14, 2006
Nov 14, 2006
Term ends
Oct 8, 2028
Oct 8, 2028
Granted
Dec 25, 2012
Dec 25, 2012
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
694
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 694 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 14, 2006, when application PCT/US2006/044185, the earliest non-provisional in its chain, was filed (this one was filed May 13, 2008) | Nov 14, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +694 days, USPTO patent term adjustment record | Oct 8, 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 8, 2028 | High confidence |
This family
| Application PCT/US2006/044185 | PCT application no patent term | no patent term |
| US 8,338,505 | this patent Oct 2028 | Oct 2028 |
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 24, 2008 Reel 21283, frame 621 | Griffith, Sharon Sue; Moore, Tony Clifford; Schiavone, Robert Joseph | Wellman, Inc. | Assignment of Assignor's Interest |
| Jan 31, 2009 Reel 22177, frame 432 | Wellman, Inc. | Wilmington Trust Company | Security Agreement |
| Feb 2, 2009 Reel 22191, frame 845 | Wellman, Inc. | The Cit Group/Business Credit, Inc. | Security Agreement |
| Feb 10, 2009 Reel 22235, frame 117 | Wellman, Inc. | Wilmington Trust Company | Security Agreement |
| Nov 11, 2009 Reel 23498, frame 489 | The Cit Group/Business Credit, Inc. | Wellman, Inc. | Release of Security Interest |
| Oct 24, 2012 Reel 29181, frame 180 | Wellman, Inc. | Dak Americas Mississippi Inc. | Merger |
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.
What's changing
Oct 2028
Term ends Oct 8, 2028. No further fees fall due before then
Note
The 694 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2012 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.