Also listed on Semprius, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jul 11, 2029 · High confidence
20-year base term ends Aug 14, 2028
Filed Aug 14, 2008 as application 12/191,478 · Granted Aug 16, 2011
Base term plus 331 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Aug 14, 2008
Aug 14, 2008
Term ends
Jul 11, 2029
Jul 11, 2029
Granted
Aug 16, 2011
Aug 16, 2011
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
331
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.
3
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 331 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 Aug 14, 2008, when this application, 12/191,478, was filed | Aug 14, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +331 days, USPTO patent term adjustment record | Jul 11, 2029 | 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 11, 2029 | High confidence |
This family
| US 7,999,454 | this patent Jul 2029 | Jul 2029 |
| Application PCT/US2009/004232 | PCT application no patent term | no patent term |
| Application 13/191,975 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Aug 14, 2008 Reel 21389, frame 879 | Winters, Dustin L.; Hamer, John W.; Parrett, Gary; Bower, Christopher; Menard, Etienne | Eastman Kodak Company; Semprius, Inc. | Assignment of Assignor's Interest |
| Aug 14, 2008 reel/frame not recorded | Bower, Christopher; Menard, Etienne; Hamer, John W.; Parrett, Gary; Winters, Dustin L. | Eastman Kodak Company | Assignment of Assignor's Interest |
| Aug 14, 2008 reel/frame not recorded | Bower, Christopher; Menard, Etienne; Hamer, John W.; Parrett, Gary; Winters, Dustin L. | Semprius, Inc. | Assignment of Assignor's Interest |
| Mar 11, 2010 Reel 24068, frame 468 | Eastman Kodak Company | Global OLED Technology LLC | Assignment of Assignor's Interest |
| Oct 30, 2014 Reel 34098, frame 475 | Semprius Inc. | Silicon Valley Bank; Horizon Technology Finance Corporation, as Collateral Agent; Horizon Funding Trust 2013-1 | Security Agreement |
| Oct 30, 2014 reel/frame not recorded | Semprius Inc. | Silicon Valley Bank | Security Agreement |
| Oct 30, 2014 reel/frame not recorded | Semprius Inc. | Horizon Technology Finance Corporation, as Collateral Agent | Security Agreement |
| Oct 30, 2014 reel/frame not recorded | Semprius Inc. | Horizon Funding Trust 2013-1 | Security Agreement |
| Apr 7, 2017 Reel 41932, frame 462 | Silicon Valley Bank; Horizon Technology Finance Corporation, as Collateral Agent; Horizon Funding Trust 2013-1 | Semprius Inc. | Release of Security Interest |
| Apr 11, 2017 Reel 42231, frame 140 | Semprius, Inc. | Semprius (Assignment for the Benefit of Creditors), LLC | Assignment of Assignor's Interest |
| Apr 13, 2017 Reel 42244, frame 531 | Semprius (Assignment for the Benefit of Creditors), LLC | X-Celeprint Limited | Assignment of Assignor's Interest |
| May 11, 2020 Reel 52631, frame 800 | X-Celeprint Limited | X Display Company Technology Limited | Change of Name |
| Sep 16, 2021 Reel 57501, frame 765 | X-Celeprint Limited | X Display Company Technology Limited | 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
Jul 2029
Term ends Jul 11, 2029. No further fees fall due before then
Note
The 331 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
344
later US patents cite this one
That is top 1% of utility patents granted in 2011 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.