594 patents currently held
2 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
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
134
Ending by 2030
Nov 2026
Next term end
541
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 Oct 2031 · High confidence
Also notable
Ends Aug 2031 · High confidence
Also notable
Ends Aug 2028 · High confidence
Flame Retardant Laser Direct Structuring Materials
US 8,492,464
The most cited patent in this portfolio, cited by 122 later US patents, top 5% of utility patents granted in 2013 in our data. Protection runs to 2031.
Flame Retardant Poly(SILOXANE) Copolymer Compositions, Methods of Manufacture, and Articles Formed Therefrom
US 8,981,015
Cited by 46 later US patents, top 10% of utility patents granted in 2015 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031. A terminal disclaimer caps this term to an earlier patent's.
Molding Compositions Containing Polycarbonate and Modified Polybutylene Terephthalate (PBT) Random Copolymers Derived from Polyethylene Terephthalate (PET)
US 7,807,745
Cited by 37 later US patents, top 25% of utility patents granted in 2010 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2028.
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.
- 12 fees due Nov 14 to 30, 2026 · next Nov 14
- 5 fees due Dec 2 to 25, 2026 · next Dec 2
- 5 fees due Jan 2 to 23, 2027 · next Jan 2
- 17 fees due Feb 4 to 28, 2027 · next Feb 4
- 13 fees due Mar 1 to 24, 2027 · next Mar 1
- 18 fees due Apr 1 to 30, 2027 · next Apr 1
- 15 fees due May 3 to 26, 2027 · next May 3
- 2 fees due Jun 10, 2027
- 9 fees due Jul 7 to 30, 2027 · next Jul 7
- 11 fees due Aug 4 to 27, 2027 · next Aug 4
- 15 fees due Sep 5 to 30, 2027 · next Sep 5
- 12 fees due Oct 5 to 30, 2027 · next Oct 5
- 11 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 11 of the patents on this record were granted since Aug 16, 2026
- 11 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 541 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,096,760 | Polymer Blend Compositions In force · Low confidence | In force | Low confidence | |
| US 9,181,431 | Polyimide Resin Compositions In force · Medium confidence | In force | Medium confidence | |
| US 8,071,693 | Polysiloxane/Polyimide Copolymers and Blends Thereof In force · High confidence | In force | High confidence | |
| US 7,498,400 | Method of Preparing Polycarbonate In force · High confidence | In force | High confidence | |
| US 7,902,264 | Polytrimethylene Terephthalate (PTT) Derived from Polyethylene Terephthalate (PET) and Containing Pet Residues In force · High confidence | In force | High confidence | |
| US 7,799,836 | Process for Making Polybutylene Terephthalate (PBT) from Polyethylene Terephthalate (PET) In force · High confidence | In force | High confidence | |
| US 7,902,263 | Process for Making Polybutylene Terephthalate (PBT) from Polyethylene Terephthalate (PET) In force · High confidence | In force | High confidence | |
| US 8,088,834 | Process for Making Polybutylene Terephthalate (PBT) from Polyethylene Terephthalate (PET) In force · High confidence | In force | High confidence | |
| US 8,138,233 | Process for Making Polybutylene Terephthalate (PBT) from Polyethylene Terephthalate (PET) In force · High confidence | In force | High confidence | |
| US 7,855,238 | Molding Compositions Containing Polyalkylene Terephthalates and Modified Polybutylene Terephthalate (PBT) Random Copolymers Derived from Pet In force · High confidence | In force | High confidence |
Also on record, not counted in the 594: 2 patents in force now held by others · 396 patents ended · 135 applications pending · 158 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.