16 patents currently held
260 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Sep 2029. from the record
Of the 260 now held by other companies, 259 name Sharp Kabushiki Kaisha as their current owner, and 1 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
5
Ending by 2030
Sep 2029
Next term end
15
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
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
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jun 2031 · High confidence
Also notable
Ends May 2030 · High confidence
Also notable
Ends no later than Mar 2034 · Medium confidence
Illumination Optical System and Projector Using the Same
US 8,936,368
The most cited patent in this portfolio, cited by 35 later US patents, top 25% of utility patents granted in 2015 in our data. Protection runs to 2031.
Illumination Optical System and a Projector Using the Same
US 9,039,187
Cited by 20 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2030. A terminal disclaimer caps this term to an earlier patent's.
Display Device, Multi-Display System, and Id Determination Method for Display Device
US 10,268,435
The newest of the three, granted 2019. It anchors the portfolio to 2034, later than anything else here. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
Formerly held, still cited
Notable
Ends Nov 2030 · High confidence
Cited by 30 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
now held by Sharp Kabushiki Kaisha
Also notable
Ends Dec 2033 · High confidence
Cited by 22 later US patents, top 25% of utility patents granted in 2018 in our data, and renewed at every maintenance window due so far. Protection runs to 2033.
now held by Sharp Kabushiki Kaisha
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Nov 26, 2026The maintenance fee for Illumination Optical System and a Projector Using the Same (US 9,039,187) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
- 1 fee due Apr 8, 2027The maintenance fee for Image Display System, Image Control Device, Display Device and Display Control Method (US 10,438,384) comes due Apr 8, 2027. Unpaid by Oct 8, 2027, it lapses early.
- 1 fee due May 24, 2027The maintenance fee for Display Device (US 9,198,313) comes due May 24, 2027. Unpaid by Nov 24, 2027, it lapses early.
Recent changes
- 3 of the patents on this record were granted since Aug 16, 2026
- 6 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 15 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Illumination Optical System and Projector Using the Same | 2 in force | to Jun 2031 |
| Infrared Light Adjustment Method and Position Detection System | 1 in force | to Oct 2034 |
| Image Display System, Image Control Device, Display Device and Display Control Method | 1 in force | to Sep 2034 |
| Image Display Apparatus and Method for Dimming Light Source | 1 in force | to Sep 2034 |
| Display Device, Multi-Display System, and Id Determination Method for Display Device | 1 in force | to Mar 2034 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,896,624 | Image Display Device and Image Processing Method In force · High confidence | In force | High confidence | |
| US 9,509,966 | Projector in Illumination Optical System Including Phosphor Wheel Driver In force · High confidence | In force | High confidence | |
| US 8,970,631 | Video Display Device In force · High confidence | In force | High confidence | |
| US 9,039,187 | Illumination Optical System and a Projector Using the Same In force · High confidence | In force | High confidence | |
| US 8,960,926 | Projector and Method for Controlling Same In force · High confidence | In force | High confidence | |
| US 9,022,574 | Display Device In force · High confidence | In force | High confidence | |
| US 8,955,985 | Lighting Device and Projection-Type Display Device Using Same In force · High confidence | In force | High confidence | |
| US 8,944,393 | Fixing Structure and Fixing Method of Multi-Screen Display Unit In force · High confidence | In force | High confidence | |
| US 8,936,368 | Illumination Optical System and Projector Using the Same In force · High confidence | In force | High confidence | |
| US 9,198,313 | Display Device In force · High confidence | In force | High confidence |
Also on record, not counted in the 16: 260 patents in force now held by others · 121 patents ended · 34 applications pending · 32 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.