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Hoechst Mitsubishi Kasei Co., Ltd.

USPTO Granted Patents = 18

Forward Citations = 33

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15 inventors (with patents filed for the assignee):

Ulrich Buhler (8 out of 57 patents)

Kiyoshi Himeno (5 out of 44 patents)

Toshio Hihara (3 out of 35 patents)

4. Kouichi Seto (3 out of 3 patents)

5. Ryouichi Sekioka (3 out of 9 patents)

6. Riyouichi Sekioka (2 out of 4 patents)

7. Hubert Kruse (2 out of 18 patents)

8. Yuji Yamada (1 out of 5 patents)

9. Erwin Dietz (1 out of 67 patents)

10. Mitsuhiro Suzuki (1 out of 1 patent)

11. Kensuke Suzuki (1 out of 2 patents)

12. Yoshiharu Hamano (1 out of 2 patents)

13. Hirotsugu Tsumura (1 out of 1 patent)

14. Wataru Shimizu (1 out of 1 patent)

15. Ralf Zerrer (1 out of 5 patents)

18 patents: Sort by Forward Citations

1. 5569751 - Monoazo dyestuffs which are free from ionic groups, their preparation (1996-10-29),

2. 5512063 - Use of novolak derivatives in the dyeing of polyester-cellulose blend (1996-04-30),

3. 5495004 - Monoazo dispersed dye and mixtures containing them and the preparation (1996-02-27),

4. 5474579 - Mixtures of monoazo dyes (1995-12-12),

5. 5440024 - 3-cyano-5-nitrothiophene type monoazo dyes and mixtures thereof (1995-08-08),

6. 5425785 - Process for dyeing polyester and polyester-containing textile materials (1995-06-20),

7. 5415669 - Dye mixtures for the dyeing of textile hydrophobic fibre materials (1995-05-16),

8. 5389109 - Process for the preparation of thermomigration-resistant dyeings (1995-02-14),

9. 5340930 - Monoazo dye having a thiophene derivative as diazo component (1994-08-23),

10. 5332404 - Disperse dye mixtures (1994-07-26),

11. 5304222 - Monoazo benzothiazole disperse dye mixture (1994-04-19),

12. 5292872 - Monoazo dispersed dyes, mixtures containing them, and the preparation (1994-03-08),

13. 5290931 - Water-insoluble naphthalic acid imide dyestuffs (1994-03-01),

14. 5278294 - Monoazo dye having diaminopyridine derivatives (1994-01-11),

15. 5248314 - High temperature dyeing of polyester and polyester-containing textile (1993-09-28),

Hoechst Mitsubishi Kasei Co., Ltd. (HM) is a joint venture between Hoechst AG of Germany and Mitsubishi Chemical Corporation of Japan. Established in 1972, HM specializes in the production of specialty chemicals for various industries such as automotive, electronics, and healthcare. With a commitment to innovation and quality, HM continues to provide cutting-edge solutions to its global customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

18 Patents

#1,227 in Tokyo

#3,052 in Japan

#33,147 in the World

Hoechst Mitsubishi Kasei Co., Ltd.

Forward Citations = 33

15 inventors:

Ulrich Buhler (8 out of 57 patents)

Kiyoshi Himeno (5 out of 44 patents)

Toshio Hihara (3 out of 35 patents)

4. Kouichi Seto (3 out of 3 patents)

5. Ryouichi Sekioka (3 out of 9 patents)

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