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Elf-Union

USPTO Granted Patents = 20

Forward Citations = 426

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30 inventors (with patents filed for the assignee):

Paul Maldonado (6 out of 33 patents)

Germain Hagenbach (3 out of 7 patents)

Daniel Duprez (3 out of 4 patents)

4. Michel Grand (3 out of 4 patents)

5. Jacques Bousquet (2 out of 20 patents)

6. Michel Ronc (2 out of 2 patents)

7. Jean-Rene Bernard (2 out of 6 patents)

8. Robert Leger (1 out of 12 patents)

9. Jean-Pierre Durand (1 out of 35 patents)

10. Jean-Claude Fayard (1 out of 8 patents)

11. Alain Faure (1 out of 7 patents)

12. Francois Dawans (1 out of 35 patents)

13. Robert Nouguier (1 out of 4 patents)

14. Gilbert Chapelet (1 out of 8 patents)

15. Jean Rene Bernard (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 4311614 - Catalysts for water dealkylation of aromatic hydrocarbons (1982-01-19),

2. 4264334 - Heavy fuel-oil compositions having an improved stability under storage (1981-04-28),

3. 4242246 - Process for the preparation of bituminous compositions making use of a (1980-12-30),

4. 4242143 - Process for improving the properties of bituminous products and an (1980-12-30),

5. 4238451 - Process and device to measure the asphaltene content of petroleum (1980-12-09),

6. 4238368 - Water dealkylation catalyst of aromatic hydrocarbons (1980-12-09),

7. 4237052 - Method for the preparation of bitumens modified by polymers (1980-12-02),

8. 4233186 - Catalysts for water dealkylation of aromatic hydrocarbons (1980-11-11),

9. 4221259 - Process for storing calories (1980-09-09),

10. 4206044 - Catalytic process for hydro-treating gas oils in the presence of hydrogen (1980-06-03),

11. 4206037 - Catalytic treatment of gas oils (1980-06-03),

12. 4201193 - Solar energy absorbing roof (1980-05-06),

13. 4191702 - Preparation of alkyl or aralkyl thiosulfates (1980-03-04),

14. 4182296 - Apparatus permitting an improvement of the carburetion of internal (1980-01-08),

15. 4165631 - Instrument for the continuous measurement of viscosity, especially of (1979-08-28),

Company Overview

Elf-Union is a Paris-based organization specializing in advanced technologies and innovative solutions across various sectors. The company focuses on developing cutting-edge applications in fields such as artificial intelligence, data analytics, and software engineering. With a commitment to fostering collaboration and driving technological advancements, Elf-Union plays a significant role in enhancing digital transformation initiatives in Europe and beyond, contributing to a more connected and efficient future.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

20 Patents

#238 in Paris

#1,013 in France

#31,295 in the World

Elf-Union

Forward Citations = 426

30 inventors:

Paul Maldonado (6 out of 33 patents)

Germain Hagenbach (3 out of 7 patents)

Daniel Duprez (3 out of 4 patents)

4. Michel Grand (3 out of 4 patents)

5. Jacques Bousquet (2 out of 20 patents)

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

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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