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Elf France

USPTO Granted Patents = 113

Forward Citations = 1,584

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147 inventors (with patents filed for the assignee):

Bernard Damin (17 out of 21 patents)

Daniel Trema (13 out of 13 patents)

Paul Maldonado (10 out of 33 patents)

4. Jacques Garapon (10 out of 15 patents)

5. Remi Touet (8 out of 8 patents)

6. Robert Leger (7 out of 12 patents)

7. Francis Demangeon (7 out of 8 patents)

8. Michele J Breysse (7 out of 9 patents)

9. Bernard Sillion (6 out of 43 patents)

10. Jean-Claude Fayard (6 out of 8 patents)

11. Claude Gueguen (6 out of 7 patents)

12. Andre De Cortanze (6 out of 6 patents)

13. Pierre Amigues (6 out of 9 patents)

14. Francois Fajula (5 out of 19 patents)

15. Jacques Bousquet (5 out of 20 patents)

Core Competencies:

Bitumen

Polymer

Hydrorefining

Additives

Lubricating Oils

Emulsions

Cationic

Catalysts

Nitrogenous Compounds

Suspension Devices

Ester Function Products

Reactive Distillation

113 patents: Sort by Forward Citations

1. 5508112 - Process for the preparation of bitumen-polymer composition (1996-04-16),

2. 5433755 - Additive formulation for fuels incorporating ester function products and (1995-07-18),

3. 5382612 - Process for preparing in aqueous emulsion a bitumen/polymer binder with (1995-01-17),

4. 5294333 - Hydrorefining process employing a niobium trisulfide-containing catalyst (1994-03-15),

5. 5269954 - Nitrogenous additives with an antioxidant action and lubricating (1993-12-14),

6. 5268029 - Cationic emulsions of bituminous binders of the type bitumen/polymer and (1993-12-07),

7. 5248648 - Hydrorefining catalyst containing sulphides of ruthenium and of at least (1993-09-28),

8. 5246986 - Bituminous binder emulsion with a viscosity controlled by addition of (1993-09-21),

9. 5234476 - Polynitrogen compound having two terminal cycles of the imide type, (1993-08-10),

10. 5157198 - Process for isomerizing normal paraffins in the presence of at least one (1992-10-20),

11. 5157009 - Catalyst for hydrorefining hydrocarbon feedstocks containing niobium (1992-10-20),

12. 5156414 - System for controlling the geometry of a vehicle wheel (1992-10-20),

13. 5156231 - Suspension-corrective device designed especially for a motorcycle (1992-10-20),

14. 5133887 - Process for the synthesis of greases permitting a good control of their (1992-07-28),

15. 5120777 - Bitumen/polymer composition exhibiting an adhesiveness which is retained (1992-06-09),

Company Overview

Elf France, headquartered in Paris, specializes in the development and manufacturing of advanced bitumen polymer compositions. The company focuses on enhancing the properties of bitumen through innovative polymer technologies, catering to various applications in construction and road maintenance. Their expertise encompasses hydrorefining processes, the formulation of additives, and the production of lubricating oils and emulsions. With a commitment to research and development, Elf France plays a significant role in advancing materials science within the bitumen sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

113 Patents

#73 in Paris

#243 in France

#7,010 in the World

Elf France

Forward Citations = 1,584

147 inventors:

Bernard Damin (17 out of 21 patents)

Daniel Trema (13 out of 13 patents)

Paul Maldonado (10 out of 33 patents)

4. Jacques Garapon (10 out of 15 patents)

5. Remi Touet (8 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Elf France. Retrieved from https://idiyas.com/company/elf-france

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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