35 patents currently held
97 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 May 2035. from the record
Of the 97 now held by other companies, 54 are held via BASF SE, and 43 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
May 2035
Next term end
35
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 Mar 2036 · High confidence
Also notable
Ends Apr 2036 · High confidence
Also notable
Ends May 2037 · High confidence
Electrically Conductive Particle Foams Based on Thermoplastic Elastomers
US 10,597,531
The most cited patent in this portfolio, cited by 9 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2036.
Hard Transparent Thermoplastic Polyurethane
US 11,414,543
Cited by 5 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2036. A terminal disclaimer caps this term to an earlier patent's.
Spring Element for a Vehicle Shock Absorber, and Vehicle Shock Absorber and Vehicle Having Same
US 10,920,843
Cited by 6 later US patents, top 25% of utility patents granted in 2021 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.
- 2 fees due Dec 6 to 27, 2026 · next Dec 6
- 1 fee due Jun 26, 2027The maintenance fee for Aging-Resistant Tpu (US 11,851,523) comes due Jun 26, 2027. Unpaid by Dec 27, 2027, it lapses early.
- 2 fees due Sep 17 to 24, 2027 · next Sep 17
- 4 fees due Oct 2 to 30, 2027 · next Oct 2
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
What they patent
The 5 largest of its 35 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 11,267,952 | Preparations Having Thermoplastic Polyurethane and a Low Base Number In force · High confidence | In force | High confidence | |
| US 10,597,531 | Electrically Conductive Particle Foams Based on Thermoplastic Elastomers In force · High confidence | In force | High confidence | |
| US 11,414,543 | Hard Transparent Thermoplastic Polyurethane In force · High confidence | In force | High confidence | |
| US 11,447,596 | Polyurethane with Improved Tear Strength In force · High confidence | In force | High confidence | |
| US 12,359,017 | Method for Producing a Rigid Polyurethane Foam In force · High confidence | In force | High confidence | |
| US 10,590,231 | Polyurethanes with Reduced Aldehyde Emission In force · High confidence | In force | High confidence | |
| US 11,168,175 | Tpu Pneumatic Tubes Made with Mono Ethyleneglycol as Chain Extender for High Temperature Use In force · High confidence | In force | High confidence | |
| US 10,815,376 | Flame-Retardant Thermoplastic Polyurethane In force · High confidence | In force | High confidence | |
| US 10,927,253 | Nucleating Agent for Compact Thermoplastic Polyurethanes In force · High confidence | In force | High confidence | |
| US 10,723,831 | Polyetheresters and Their Use in Rigid Polyurethane Foams In force · High confidence | In force | High confidence |
Also on record, not counted in the 35: 97 patents in force now held by others · 13 patents ended · 81 applications pending · 80 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.