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Marl, undefined

Chemische Werke Huls Aktiengesellschaft

USPTO Granted Patents = 283

Forward Citations = 2,416

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311 inventors (with patents filed for the assignee):

Rainer Gras (21 out of 63 patents)

Elmar Wolf (19 out of 59 patents)

Rainer Feldmann (18 out of 22 patents)

4. Roland Feinauer (13 out of 34 patents)

5. Josef Disteldorf (13 out of 31 patents)

6. Peter Hofmann (12 out of 17 patents)

7. Josef K Rigler (12 out of 14 patents)

8. Wolfgang H Muller (11 out of 14 patents)

9. Klaus Burzin (11 out of 24 patents)

10. Horst Leithauser (11 out of 12 patents)

11. Manfred Kaufhold (10 out of 46 patents)

12. Kurt Kosswig (10 out of 17 patents)

13. Ferdinand List (10 out of 10 patents)

14. Alfred Coenen (10 out of 10 patents)

15. Josef Kalka (10 out of 15 patents)

Core Competencies:

Polyphenylene Ether

Hydrochloric Acid Purification

Polyurethane Coatings

Thermoplastic Compositions

Expandable Styrene Polymers

Cobalt Catalysts Reprocessing

Diels-Alder Adducts

Hot Phosgenation

Micronutrient Mixtures

Cycloalkyl Amino-s-Triazines

Polyalkylpiperidylamines

Copper Hydroxide Phosphate

283 patents: Sort by Forward Citations

1. 4822869 - Process for introducing gases into liquids in the production of (1989-04-18),

2. 4786488 - Process for the purification of hydrochloric acids (1988-11-22),

3. 4772665 - Heat- and oxidation-resistant polyurethane coatings (1988-09-20),

4. 4749771 - Process for introducing gases into liquids (1988-06-07),

5. 4746723 - Process for the production of a polyphenylene ether protected from (1988-05-24),

6. 4659803 - Process for purifying polyphenylene oxides obtained by interruption of (1987-04-21),

7. 4656220 - Thermoplastic compositions based on polyphenylene ethers and (1987-04-07),

8. 4652343 - Process for the separation of mixtures of paraffin or respectively (1987-03-24),

9. 4649067 - One-component baking enamels (1987-03-10),

10. 4647613 - Thermoplastic compositions based on polyphenylene ethers, styrene (1987-03-03),

11. 4626585 - Method of producing a polyphenylene ether protected against molecular (1986-12-02),

12. 4622306 - Process for protecting steam generators from material damage (1986-11-11),

13. 4619951 - Sealing compositions for electric cables (1986-10-28),

14. 4618468 - Method for controlling bead size in the production of expandable styrene (1986-10-21),

15. 4617618 - Headlamp reflectors for automobile vehicles manufactured by injection (1986-10-14),

Chemische Werke Huls Aktiengesellschaft is a German chemical company. It specializes in the production of industrial chemicals, polymers, and fine chemicals. The company has a strong focus on research and development, aiming to provide innovative solutions for various industries. With a long history dating back to 1877, the company has established a global presence and operates in multiple markets worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

283 Patents

#2 in Marl

#229 in D

#3,032 in the World

Marl, undefined

Chemische Werke Huls Aktiengesellschaft

Forward Citations = 2,416

311 inventors:

Rainer Gras (21 out of 63 patents)

Elmar Wolf (19 out of 59 patents)

Rainer Feldmann (18 out of 22 patents)

4. Roland Feinauer (13 out of 34 patents)

5. Josef Disteldorf (13 out of 31 patents)

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