232 patents currently held

20 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.

3 more records may belong here and await a decision; they are not counted.

The next term ends in May 2027. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

May 2027

Next term end

212

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 204320442045

notable patents fee due within 90 days all others Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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

Hydrocarbon Composition Useful as a Fuel and Fuel Oil Containing a Petroleum Component and a Component of a Biological Origin US 9,469,818

Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2028.

Ends Aug 2028 · High confidence Also notable

Process for Producing Hydrocarbon Fractions from Mixtures of a Biological Origin US 8,608,812

Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2029.

Ends May 2029 · High confidence Also notable

Cobalt-Based Catlayst for Fischer-Tropsch Synthesis US 8,071,655

Renewed at every maintenance window since the 2011 grant; no more fees are due before its term ends in 2027.

Ends May 2027 · 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 Nov 28, 2026
The maintenance fee for Oleaginous Yeast Variant, Method for Obtaining Thereof and Use Thereof for Lipid Production (US 10,301,656) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
5 fees due Dec 2 to 25, 2026 · next Dec 2
6 fees due Jan 2 to 28, 2027 · next Jan 2
2 fees due Feb 1 to 20, 2027 · next Feb 1
3 fees due Mar 1 to 15, 2027 · next Mar 1
7 fees due Apr 6 to 30, 2027 · next Apr 6
5 fees due May 7 to 19, 2027 · next May 7
7 fees due Jun 5 to 30, 2027 · next Jun 5
6 fees due Jul 2 to 30, 2027 · next Jul 2
2 fees due Aug 6 to 13, 2027 · next Aug 6
10 fees due Sep 1 to 26, 2027 · next Sep 1
4 fees due Oct 7 to 30, 2027 · next Oct 7
3 fees due Nov 3 to 14, 2027 · next Nov 3

Which patents, and when each one lapses · Pro

Recent changes

5 of the patents on this record were granted since Aug 17, 2026
3 terms have ended since Aug 17, 2026

What they patent

The 5 largest of its 212 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Apparatus and Process for the Hydroconversion of Heavy Oil Products	6 in force	to Mar 2040
Hydrotreatment Catalysts and Process for Preparing Said Catalysts	3 in force	to Jul 2038
Apparatus and Method for Internal Cleaning of a Pipeline	2 in force	to Feb 2041
Method for Inhibiting Water Permeation in an Extraction Well of a Hydrocarbon Fluid from an Underground Reservoir	2 in force	to May 2040
Disubstituted Diaryloxybenzoheterodiazole Compounds	2 in force	to Sep 2038

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,071,655	Cobalt-Based Catlayst for Fischer-Tropsch Synthesis held by Institut Francais du Petrole and Eni S.P.A. In force Term ends May 7, 2027 · High confidence	In force	Term ends May 7, 2027	High confidence
US 7,704,378	Method for the Production of Middle Distilllates by Hydroisomerisation Et Hydrocracking of Charges Arrising from the Fischer-Tropsch Method held by Institut Francais du Petrole and Eni S.P.A. In force Term ends Jul 11, 2027 · High confidence	In force	Term ends Jul 11, 2027	High confidence
US 7,658,836	Process for Producing Middle Distillates by Hydroisomerizing and Hydrocracking Feeds from the Fischer-Tropsch Process Using a Multifunctional Guard Bed held by Institut Francais du Petrole and Eni S.P.A. In force Term ends Jul 21, 2027 · High confidence	In force	Term ends Jul 21, 2027	High confidence
US 8,123,932	Process for the Conversion of Heavy Feedstocks Such as Heavy Crude Oils and Distillation Residues held by Eni S.P.A., Snamprogetti S.P.A. and Enitecnologie, S.P.A. In force Ends no later than Jan 26, 2028 · Medium confidence	In force	Ends no later than Jan 26, 2028	Medium confidence
US 8,030,238	Catalyst and Process for the Preparation of Alkylated Aromatic Hydrocarbons held by Polimeri Europa S.P.A. and Eni S.P.A. In force Term ends Mar 30, 2028 · High confidence	In force	Term ends Mar 30, 2028	High confidence
US 8,709,982	Additives for Oil Recovery from Reservoirs In force Term ends Apr 2, 2028 · High confidence	In force	Term ends Apr 2, 2028	High confidence
US 9,708,554	System and Process for the Hydroconversion of Heavy Oils In force Term ends May 19, 2028 · High confidence	In force	Term ends May 19, 2028	High confidence
US 7,977,085	Process for the Cultivation of Micro-Algae In force Term ends Jun 17, 2028 · High confidence	In force	Term ends Jun 17, 2028	High confidence
US 8,057,660	Process for the Total Conversion of Heavy Feedstocks to Distillates In force Term ends Jun 24, 2028 · High confidence	In force	Term ends Jun 24, 2028	High confidence
US 7,776,287	Novel Internal Exchanger for Gas-Liquid-Solid Reactor for Fischer-Tropsch Synthesis held by Institut Francais du Petrole and Eni S.P.A. In force Ends no later than Jul 24, 2028 · Medium confidence	In force	Ends no later than Jul 24, 2028	Medium confidence

10 of 232 patents shown.

Pro members see all 232.

Pro members: see all 232 patents

Also on record, not counted in the 232: 20 patents in force now held by others · 122 patents ended · 56 applications pending · 103 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.

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Eni S.P.A.