For the Inventor, By the Inventor

Enter assignee name

Courbevoie, France

Rhone-Progil

USPTO Granted Patents = 51

Forward Citations = 416

Loading Chart...

Loading Chart...

74 inventors (with patents filed for the assignee):

Jean Berthoux (5 out of 6 patents)

Jean-Claude Daumas (4 out of 6 patents)

Max Michel (4 out of 8 patents)

4. Salomon Soussan (4 out of 4 patents)

5. Yves Correia (3 out of 27 patents)

6. Pierre Bouy (3 out of 12 patents)

7. Jean-Raymond Costes (3 out of 3 patents)

8. Ghislain Schwachhofer (3 out of 7 patents)

9. Jacques Becuwe (3 out of 3 patents)

10. Jean-Claude Strini (3 out of 3 patents)

11. Francis Fournel (3 out of 3 patents)

12. Bernard Chauvel (2 out of 19 patents)

13. Francois Meiller (2 out of 16 patents)

14. Georges Dupuy (2 out of 5 patents)

15. Jacques-Pierre Martinaud (2 out of 4 patents)

Core Competencies:

Bulk Polymerization

Vinyl Chloride

Gas Treatment

Catalysts

Phthalic Anhydride

Electrolysis Cell

Amines

Additives

Hydrogen Chloride

Alumina

Porous Substances

Carboxylic Acids

51 patents: Sort by Forward Citations

1. 4299935 - Process for bulk polymerization (1981-11-10),

2. 4277585 - Vertical autoclave for bulk polymerization of vinyl chloride (1981-07-07),

3. 4198376 - Vertical autoclave for bulk polymerization of vinyl chloride based (1980-04-15),

4. 4141962 - Catalysts for treating gases containing sulphur compounds (1979-02-27),

5. 4124699 - Alumina-based bodies with large pores, produced by agglomeration (1978-11-07),

6. 4121978 - Method of separating chlorinated aliphatic hydrocarbons from mixtures (1978-10-24),

7. 4119645 - Method of preparing phthalic anhydride (1978-10-10),

8. 4110284 - Polyurethane latexes from sulfonate prepolymer, aqueous chain extension (1978-08-29),

9. 4104457 - Bulk polymerization of vinyl chloride to control grain size (1978-08-01),

10. 4096150 - Process for manufacture of tertiary amines (1978-06-20),

11. 4078018 - Graft polymers and compositions of high impact strength (1978-03-07),

12. 4072728 - Process for the preparation of 1,2-dichloroethane in two reaction zones (1978-02-07),

13. 4061581 - Trimethylolpropane esters useful as base lubricants for motor oils (1977-12-06),

14. 4058574 - Process for the oxychlorination of hydrocarbons with ammonium chloride (1977-11-15),

15. 4057579 - Adducts of olefins and trichloromethane phosphonic dichloride (1977-11-08),

Company Overview

Rhone-Progil is a leading company based in Courbevoie, France, specializing in bulk polymerization technologies. The organization focuses on the development and manufacturing of advanced materials, particularly in the areas of vinyl chloride and phthalic anhydride. Rhone-Progil is also engaged in innovative gas treatment solutions and the production of catalysts, amines, and additives, contributing to various industrial applications. Their expertise in electrolysis cells further enhances their capabilities in chemical processing and materials science.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

51 Patents

#33 in Courbevoie

#469 in France

#13,788 in the World

Courbevoie, France

Rhone-Progil

Forward Citations = 416

74 inventors:

Jean Berthoux (5 out of 6 patents)

Jean-Claude Daumas (4 out of 6 patents)

Max Michel (4 out of 8 patents)

4. Salomon Soussan (4 out of 4 patents)

5. Yves Correia (3 out of 27 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rhone-Progil. Retrieved from https://idiyas.com/company/rhone-progil

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]

Loading…