34 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.

1 more record may belong here and awaits a decision; it is not counted.

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

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026202720282029203020312032203320342035 2036 2037 2038 203920402041 2042204320442045

notable patents 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.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Polyether Derivatives, Uses, and Methods of Making the Same US 10,844,169

A family of 5 related applications built on the 2020 grant. Protection runs to 2038.

Ends Jul 2038 · High confidence Also notable

Film Ozonolysis in a Tubular or Multitubular Reactor US 10,071,944

The largest patent family in this portfolio, 64 related applications, renewed at every maintenance window due so far. Protection runs to 2035.

Ends Jun 2035 · High confidence Also notable

Bi- and Tricyclic Compounds for Use as Aroma Chemicals US 12,234,206

Granted 2025. Too new for citation comparison; protection runs to 2042.

Ends Jan 2042 · High 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.

1 fee due Mar 3, 2027
The maintenance fee for Preparation of 3-Hydroxy-3,6-Dimethylhexahydrobenzofuran-2-ONE and Derivatives Thereof (US 10,399,954) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
1 fee due Apr 1, 2027
The maintenance fee for Film Ozonolysis in a Tubular or Multitubular Reactor (US 10,428,001) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
3 fees due May 14 to 28, 2027 · next May 14
1 fee due Jul 16, 2027
The maintenance fee for Cosmetic Compositions Comprising Polyether Polymers (US 11,872,300) comes due Jul 16, 2027. Unpaid by Jan 18, 2028, it lapses early.
2 fees due Sep 5 to 12, 2027 · next Sep 5

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

What they patent

The 4 largest of its 8 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Ozonolysis Operations for Generation of Reduced And/Or Oxidized Product Streams	24 in force	to Nov 2042
Polyether Derivatives, Uses, and Methods of Making the Same	4 in force	to Oct 2038
Bi- and Tricyclic Compounds for Use as Aroma Chemicals	1 in force	to Jan 2042
Cosmetic Compositions Comprising Polyether Polymers	1 in force	to Apr 2041

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 9,604,898	Ozonolysis Operations for Generation of Reduced And/Or Oxidized Product Streams In force Term ends Jul 19, 2033 · High confidence	In force	Term ends Jul 19, 2033	High confidence
US 9,682,914	Terpene-Derived Acids and Esters and Methods for Preparing and Using Same In force Term ends Jan 13, 2035 · High confidence	In force	Term ends Jan 13, 2035	High confidence
US 10,280,131	Terpene-Derived Acids and Esters and Methods for Preparing and Using Same In force Term ends Jan 13, 2035 · Medium confidence	In force	Term ends Jan 13, 2035	Medium confidence
US 10,011,582	Substituted Delta-Lactones and Methods of Preparing Same In force Term ends Feb 18, 2035 · High confidence	In force	Term ends Feb 18, 2035	High confidence
US 9,783,520	Macrocyclic Compounds, Polymers, and Methods for Making Same In force Term ends May 15, 2035 · High confidence	In force	Term ends May 15, 2035	High confidence
US 10,071,941	Terpene-Derived Compounds and Methods for Preparing and Using Same In force Term ends Jun 10, 2035 · High confidence	In force	Term ends Jun 10, 2035	High confidence
US 10,428,001	Film Ozonolysis in a Tubular or Multitubular Reactor In force Term ends Jun 19, 2035 · High confidence	In force	Term ends Jun 19, 2035	High confidence
US 10,934,239	Film Ozonolysis in a Tubular or Multitubular Reactor In force Term ends Jun 19, 2035 · High confidence	In force	Term ends Jun 19, 2035	High confidence
US 10,071,944	Film Ozonolysis in a Tubular or Multitubular Reactor In force Term ends Jun 22, 2035 · High confidence	In force	Term ends Jun 22, 2035	High confidence
US 10,059,801	Polyethers, Polyamines, Polythioethers, and Methods for Making Same In force Term ends Aug 28, 2035 · High confidence	In force	Term ends Aug 28, 2035	High confidence

10 of 34 patents shown.

Pro members see all 34.

Pro members: see all 34 patents

Also on record, not counted in the 34: 2 patents in force now held by others · 11 applications pending · 10 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.

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

P2 Science, Inc.