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Oberhausen, Germany

Ruhrchemie Aktiengesellschaft

USPTO Granted Patents = 125

Trademarks = 1

Forward Citations = 774

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127 inventors (with patents filed for the assignee):

Boy Cornils (45 out of 52 patents)

Jurgen Weber (26 out of 46 patents)

Wolfgang Payer (19 out of 25 patents)

4. Helmut Bahrmann (17 out of 75 patents)

5. Helmut Springer (15 out of 43 patents)

6. Hanswilhelm Bach (15 out of 21 patents)

7. Werner Konkol (14 out of 19 patents)

8. Ernst Wiebus (13 out of 34 patents)

9. Josef Hibbel (11 out of 12 patents)

10. Volkmar Schmidt (11 out of 12 patents)

11. Bernhard Lieder (11 out of 11 patents)

12. Hans-Walter Birnkraut (10 out of 10 patents)

13. Hans Tummes (10 out of 10 patents)

14. Hans Feichtinger (10 out of 10 patents)

15. Wilhelm Gick (9 out of 14 patents)

Core Competencies:

Hydroformylation

Aldehyde Preparation

Polymerization

Rhodium Catalysts

Propanediol

Ethylene Copolymers

Synthesis Gas

Quaternary Ammonium Salts

Unsaturated Hydrocarbons

Gasification

Catalytic Oxidation

Ethanol Production

125 patents: Sort by Forward Citations

1. 5008473 - Process for purifying propanediol-1,3 (1991-04-16),

2. 4918247 - Process for the preparation of 2,2-dimethylpropanediol-1,3 (1990-04-17),

3. 4862908 - Mineral oils and mineral oil distillates having improved flowability and (1989-09-05),

4. 4808758 - Hydroformylation process (1989-02-28),

5. 4808757 - Process for the preparation of aldehydes (1989-02-28),

6. 4801754 - Hydroformylation process (1989-01-31),

7. 4795727 - Rhodium catalysts and methods of preparation and use thereof (1989-01-03),

8. 4772673 - Ethylene copolymers (1988-09-20),

9. 4752303 - Process for producing synthesis gas by partial oxidation of coal-water (1988-06-21),

10. 4740626 - Process for the preparation of aldehydes (1988-04-26),

11. 4731485 - Process for hydroformylation with rhodium catalysts and the separation (1988-03-15),

12. 4723047 - Process for the preparation of nonadecanediols (1988-02-02),

13. 4711648 - Process for purification of gases (1987-12-08),

14. 4710321 - Quaternary ammonium salts of sulfonated triarylphosphines and process (1987-12-01),

15. 4699773 - Process and apparatus for the preparation of ammonium nitrate (1987-10-13),

Company Overview

Ruhrchemie Aktiengesellschaft, based in Oberhausen, Germany, specializes in advanced chemical processes, focusing on hydroformylation and aldehyde preparation. The company is recognized for its expertise in polymerization techniques and the development of rhodium catalysts, which are essential in various chemical syntheses. Additionally, Ruhrchemie is involved in the production of propanediol, ethylene copolymers, and quaternary ammonium salts, contributing significantly to the chemical industry with innovative solutions and high-quality products.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

125 Patents

#1 in Oberhausen

#478 in Germany

#6,414 in the World

Oberhausen, Germany

Ruhrchemie Aktiengesellschaft

Forward Citations = 774

127 inventors:

Boy Cornils (45 out of 52 patents)

Jurgen Weber (26 out of 46 patents)

Wolfgang Payer (19 out of 25 patents)

4. Helmut Bahrmann (17 out of 75 patents)

5. Helmut Springer (15 out of 43 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ruhrchemie Aktiengesellschaft. Retrieved from https://idiyas.com/company/ruhrchemie-ag

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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