262 patents currently held

31 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.

The next term ends in Jul 2033. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

Jul 2033

Next term end

251

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033 2034 203520362037 2038 2039 2040 2041 2042 2043 2044 2045

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

Quantum Dot and Method for Producing the Same US 11,834,596

Cited by 6 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2040.

Ends Oct 2040 · High confidence Also notable

Wavelength Conversion Member, Molded Body, Wavelength Conversion Apparatus, Sheet Member, Light Emitting Apparatus, Light Guide Apparatus and Display Apparatus US 10,101,008

The most cited patent in this portfolio, cited by 12 later US patents, top 25% of utility patents granted in 2018 in our data. Protection runs to 2035.

Ends Jun 2035 · High confidence Also notable

Quantum-Dot Containing Resin Sheet or Film, Method for Producing the Same, and Wavelength Conversion Member US 11,629,288

Cited by 5 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2039.

Ends Jun 2039 · High confidence

Formerly held, still cited

Notable

Photomask Blank and Photomask US 7,767,366

The most cited patent in this portfolio, cited by 88 later US patents, top 10% of utility patents granted in 2010 in our data. Protection runs to 2028. 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.

merged into Toppan Photomask Co.,Ltd.

Ends no later than Jul 2028 · Medium confidence

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.

2 fees due Dec 6 to 27, 2026 · next Dec 6
1 fee due Feb 28, 2027
The maintenance fee for Optical Assembly and Method of Producing Optical Assembly (US 11,741,327) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
1 fee due Mar 24, 2027
The maintenance fee for Wavelength Converting Member, and Light Emitting Device, Light Emitting Element, Light Source Unit, and Display Device Using Wavelength Converting Member (US 10,422,937) comes due Mar 24, 2027. Unpaid by Sep 24, 2027, it lapses early.
2 fees due Apr 8 to 17, 2027 · next Apr 8
3 fees due May 21 to 28, 2027 · next May 21
3 fees due Jun 5 to 19, 2027 · next Jun 5
4 fees due Jul 9 to 30, 2027 · next Jul 9
3 fees due Aug 6 to 27, 2027 · next Aug 6
8 fees due Sep 3 to 26, 2027 · next Sep 3
5 fees due Oct 9 to 30, 2027 · next Oct 9
2 fees due Nov 7 to 12, 2027 · next Nov 7

Which patents, and when each one lapses · Pro

Recent changes

41 of the patents on this record were granted since Aug 16, 2026
2 terms have ended since Aug 16, 2026

What they patent

The 5 largest of its 251 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Display Device	3 in force	to May 2039
Wavelength Conversion Member, Molded Body, Wavelength Conversion Apparatus, Sheet Member, Light Emitting Apparatus, Light Guide Apparatus and Display Apparatus	3 in force	to Jun 2035
Quantum Dot, Manufacturing Method of the Dot, and Compact, Sheet Member, Wavelength Conversion Member and Light Emitting Apparatus Using the Quantum Dot	3 in force	to Apr 2035
Avatar Management System, Avatar Management Method, Program, and Computer-Readable Recording Medium	2 in force	to Apr 2042
Quantum Dot and Method for Producing the Same	2 in force	to Sep 2040

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,786,823	Light-Emitting Device with Sealing Member Comprising Zinc Sulfide Particles In force Term ends Jul 8, 2033 · High confidence	In force	Term ends Jul 8, 2033	High confidence
US 10,656,319	Liquid Crystal Display Device In force Term ends Jan 28, 2034 · High confidence	In force	Term ends Jan 28, 2034	High confidence
US 10,436,418	Wavelength Conversion Member, Molded Body, Wavelength Conversion Apparatus, Sheet Member, Light Emitting Apparatus, Light Guide Apparatus and Display Apparatus In force Term ends Apr 3, 2035 · High confidence	In force	Term ends Apr 3, 2035	High confidence
US 10,670,230	Wavelength Conversion Member, Molded Body, Wavelength Conversion Apparatus, Sheet Member, Light Emitting Apparatus, Light Guide Apparatus and Display Apparatus In force Term ends Apr 3, 2035 · High confidence	In force	Term ends Apr 3, 2035	High confidence
US 10,676,667	Quantum Dot, Manufacturing Method of the Dot, and Compact, Sheet Member, Wavelength Conversion Member and Light Emitting Apparatus Using the Quantum Dot In force Term ends Apr 3, 2035 · High confidence	In force	Term ends Apr 3, 2035	High confidence
US 10,815,425	Quantum Dot, Manufacturing Method of the Dot, and Compact, Sheet Member, Wavelength Conversion Member and Light Emitting Apparatus Using the Quantum Dot In force Term ends Apr 3, 2035 · High confidence	In force	Term ends Apr 3, 2035	High confidence
US 10,266,769	Quantum Dot, Manufacturing Method of the Dot, and Compact, Sheet Member, Wavelength Conversion Member and Light Emitting Apparatus Using the Quantum Dot In force Term ends Apr 27, 2035 · High confidence	In force	Term ends Apr 27, 2035	High confidence
US 10,101,008	Wavelength Conversion Member, Molded Body, Wavelength Conversion Apparatus, Sheet Member, Light Emitting Apparatus, Light Guide Apparatus and Display Apparatus In force Term ends Jun 15, 2035 · High confidence	In force	Term ends Jun 15, 2035	High confidence
US 9,923,006	Optical Detection Element and Solid-State Image Pickup Device In force Term ends Jul 23, 2035 · High confidence	In force	Term ends Jul 23, 2035	High confidence
US 10,598,844	Wavelength Conversion Member, and Light-Emitting Apparatus, Light-Emitting Element, Light Source Apparatus, and Display Apparatus Using Same In force Term ends Oct 11, 2035 · High confidence	In force	Term ends Oct 11, 2035	High confidence

10 of 262 patents shown.

Pro members see all 262.

Pro members: see all 262 patents

Also on record, not counted in the 262: 31 patents in force now held by others · 4 patents ended · 382 applications pending · 42 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.

Export every term end as CSV · Pro

Toppan Inc.