104 patents currently held
28 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.
5 more records may belong here and await a decision; they are not counted.
The next term ends in Feb 2027. from the record
Of the 28 now held by other companies, 22 name Total American Services Inc. as their current owner, and 6 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
34
Ending by 2030
Feb 2027
Next term end
74
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 Jul 2029 · High confidence
Also notable
Ends Oct 2033 · High confidence
Also notable
Ends Sep 2037 · High confidence
Catalyst with an Ion-Modified Binder
US 8,912,109
The most cited patent in this portfolio, cited by 31 later US patents, top 25% of utility patents granted in 2014 in our data. Protection runs to 2029. A terminal disclaimer caps this term to an earlier patent's.
Depolymerizatin of Plastic Materials
US 8,969,638
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 2033.
Curable Rubber Compositions Containing Styrene/Alpha-Methyl Styrene Co-Oligomers
US 10,450,446
Cited by 11 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2037.
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.
- 3 fees due Nov 19 to 30, 2026 · next Nov 19
- 2 fees due Dec 2 to 18, 2026 · next Dec 2
- 4 fees due Jan 2 to 28, 2027 · next Jan 2
- 2 fees due Feb 6 to 11, 2027 · next Feb 6
- 2 fees due Mar 1 to 22, 2027 · next Mar 1
- 4 fees due Apr 10 to 29, 2027 · next Apr 10
- 2 fees due May 3 to 24, 2027 · next May 3
- 1 fee due Jun 15, 2027The maintenance fee for Method for Making a High Impact Polystyrene with High Gloss and High Impact Strength (US 9,212,278) comes due Jun 15, 2027. Unpaid by Dec 15, 2027, it lapses early.
- 2 fees due Jul 2 to 28, 2027 · next Jul 2
- 2 fees due Aug 2 to 4, 2027 · next Aug 2
- 1 fee due Sep 22, 2027The maintenance fee for Polypropylene and Polylactic Acid Formulations for Heat Seal Applications (US 9,290,650) comes due Sep 22, 2027. Unpaid by Mar 22, 2028, it lapses early.
- 2 fees due Oct 14 to 28, 2027 · next Oct 14
- 4 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 3 of the patents on this record were granted since Aug 16, 2026
- 7 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 74 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst | 4 in force | to Sep 2030 |
| Offgas Stream Direct Contact Condenser | 3 in force | to Mar 2032 |
| Injection Stretch Blow Molded Articles and Random Copolymers for Use Therein | 3 in force | to Dec 2031 |
| Compatibilized Polypropylene Heterophasic Copolymer and Polylactic Acid Blends for Injection Molding Applications | 3 in force | to Oct 2028 |
| Clear Polypropylene Composition for Thermoforming | 2 in force | to Dec 2041 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,428,166 | Articles Having Improved Clarity, Prepared from Propylene-Ethylene Copolymers In force · Medium confidence | In force | Medium confidence | |
| US 9,127,105 | Supported Metallocene Catalysts In force · High confidence | In force | High confidence | |
| US 7,589,138 | Injection Molding Process In force · High confidence | In force | High confidence | |
| US 8,299,188 | Supported Metallocene Catalysts In force · High confidence | In force | High confidence | |
| US 7,754,817 | Low Temperature Initiators for Improving the Rubber Phase Volume of Hips Formulations In force · High confidence | In force | High confidence | |
| US 8,075,830 | Polypropylene Blown Film In force · High confidence | In force | High confidence | |
| US 10,016,735 | Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst In force · High confidence | In force | High confidence | |
| US 8,623,484 | Injection Stretch Blow Molded Articles and Polymers for Use Therein In force · High confidence | In force | High confidence | |
| US 9,416,264 | Compatibilized Polypropylene Heterophasic Copolymer and Polylactic Acid Blends for Injection Molding Applications In force · High confidence | In force | High confidence | |
| US 8,007,699 | Process of Making Bicomponent Fiber In force · High confidence | In force | High confidence |
Also on record, not counted in the 104: 28 patents in force now held by others · 305 patents ended · 20 applications pending · 214 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.