533 patents currently held
165 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 Nov 2026. from the record
Of the 165 now held by other companies, 149 name Shijiazhuang Chengzhi Yonghua Display Material Co. Ltd. as their current owner, and 16 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
50
Ending by 2030
Nov 2026
Next term end
519
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 May 2032 · High confidence
Also notable
Ends Oct 2028 · High confidence
Also notable
Ends Nov 2029 · Medium confidence
Active-Energy-Ray-Curable Ink Jet Recording Ink Composition and Method for Forming Image
US 8,998,399
The most cited patent in this portfolio, cited by 29 later US patents, top 25% of utility patents granted in 2015 in our data. Protection runs to 2032.
Method for Producing Acid Group-Containing Polyarylene Sulfide
US 8,426,552
Cited by 23 later US patents, top 25% of utility patents granted in 2013 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
Method for Manufacturing Polyarylene Sulfide Resin
US 8,883,959
Renewed at every maintenance window since the 2014 grant; no more fees are due before its term ends in 2029.
Formerly held, still cited
Notable
Ends Dec 2037 · High confidence
The newest of the three, granted 2021. It anchors the portfolio to 2037, later than anything else here.
now held by Toppan Holdings Inc.
Also notable
Ends Oct 2037 · High confidence
The newest of the three, granted 2021. It anchors the portfolio to 2037, later than anything else here.
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 Nov 14 to 28, 2026 · next Nov 14
- 10 fees due Dec 2 to 27, 2026 · next Dec 2
- 6 fees due Jan 2 to 23, 2027 · next Jan 2
- 5 fees due Feb 8 to 28, 2027 · next Feb 8
- 13 fees due Mar 1 to 26, 2027 · next Mar 1
- 10 fees due Apr 3 to 24, 2027 · next Apr 3
- 9 fees due May 5 to 28, 2027 · next May 5
- 7 fees due Jun 8 to 30, 2027 · next Jun 8
- 7 fees due Jul 2 to 23, 2027 · next Jul 2
- 6 fees due Aug 11 to 27, 2027 · next Aug 11
- 10 fees due Sep 3 to 29, 2027 · next Sep 3
- 9 fees due Oct 7 to 26, 2027 · next Oct 7
- 4 fees due Nov 5 to 12, 2027 · next Nov 5
Recent changes
- Sep 14Assignment recorded on 1 record: DIC Corporation to Green Earth Institute Co., Ltd. Recorded Sep 14, 2026, executed Sep 1, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 75995, frame 795.
- 13 of the patents on this record were granted since Aug 16, 2026
- 10 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 519 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Polyarylene Sulfide Resin and Manufacturing Method Therefor, Poly(arylene Sulfonium Salt) and Manufacturing Method Therefor, and Sulfoxide | 3 in force | to Sep 2034 |
| Resistivity Value Regulating Device and Resistivity Value Regulating Method | 2 in force | to Oct 2039 |
| Plate-Like Alumina Particle and a Manufacturing Method for the Same | 2 in force | to Jul 2039 |
| Adhesive Tape | 2 in force | to Jun 2039 |
| Adhesive, Laminated Film Using Thereof and Polyol Composition for Adhesive | 2 in force | to Jan 2038 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,964,653 | Polyol composition for two-component curable abrasive foam, composition for two-component curable abrasive foam, abrasive foam, and method for producing abrasive foam In force · High confidence | In force | High confidence | |
| US 7,670,517 | Method of Producing Polyurethane Foam Sheet and Laminated Sheet Using Same In force · High confidence | In force | High confidence | |
| US 7,781,129 | Green Pigment for Color Filter, Green Pigment Dispersion, Photosensitive Color Composition, Color Filter, and Liquid Crystal Panel In force · High confidence | In force | High confidence | |
| US 8,168,729 | Thermosetting Resin Composition In force · High confidence | In force | High confidence | |
| US 7,837,784 | High-Chroma C.I. Pigment Red 254 and Process for Producing the Same In force · High confidence | In force | High confidence | |
| US 7,977,401 | Ultraviolet-Curable Resin Composition Containing a Polyfunctional Oxetanyl Group In force · High confidence | In force | High confidence | |
| US 7,641,968 | Moisture-Curable Polyurethane Hot Melt Adhesive and Multilayer Sheet Using the Same In force · High confidence | In force | High confidence | |
| US 7,767,293 | Leather-Like Sheet In force · High confidence | In force | High confidence | |
| US 8,138,261 | Photocatalyst-Containing Water-Based Curable Coating Compositions and Process for Production Thereof In force · High confidence | In force | High confidence | |
| US 7,914,896 | Moisture-Curable Polyurethane Hot Melt Adhesive, and Laminate and Moisture-Permeable Film Using the Same In force · High confidence | In force | High confidence |
Also on record, not counted in the 533: 165 patents in force now held by others · 156 patents ended · 298 applications pending · 430 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.