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Sumika Fine Chemicals, Co.,ltd.

USPTO Granted Patents = 55

Forward Citations = 132

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54 inventors (with patents filed for the assignee):

Nobushige Itaya (19 out of 56 patents)

Masami Igi (16 out of 20 patents)

Kiyoshi Sugi (15 out of 17 patents)

4. Tadashi Katsura (12 out of 25 patents)

5. Tetsuya Shintaku (9 out of 12 patents)

6. Taketo Hayashi (8 out of 13 patents)

7. Kozo Matsui (7 out of 8 patents)

8. Tetsuya Ikemoto (6 out of 23 patents)

9. Shigeya Yamazaki (6 out of 7 patents)

10. Eiichi Iishi (6 out of 7 patents)

11. Taro Ishibashi (6 out of 6 patents)

12. Norio Kometani (6 out of 7 patents)

13. Yoshihiro Kawada (5 out of 17 patents)

14. Toshio Nakamatsu (5 out of 15 patents)

15. Hiroshi Shiratani (4 out of 7 patents)

Core Competencies:

Quinoline Compounds

Piperidine Derivatives

Bicalutamide Crystals

Epothilone Derivatives

Anhydrous Mirtazapine

Citalopram Production

Phenothiazine Compounds

Hydrazine Derivatives

Purine Derivatives

Optically Active Carbinols

Pyridinemethanol Compounds

Alkylated Cyanoacetylurea

55 patents: Sort by Forward Citations

1. 6852862 - Process for producing quinoline-3-carboxylic acid compound (2005-02-08),

2. 6815548 - Process for preparing a piperidine derivative (2004-11-09),

3. 6777576 - Production method of 2-cyclohexyl-2-hydroxy-2-phenylacetic acid intermediate therefor and production method thereof (2004-08-17),

4. 6740770 - Crystal of bicalutamide and production method thereof (2004-05-25),

5. 6730803 - Synthetic intermediate for epothilone derivative and production method thereof (2004-05-04),

6. 6723845 - Anhydrous mirtazapine crystals and process for preparing the same (2004-04-20),

7. 6683207 - Production method of (R)-3 hydroxy-3-(2-phenylethyl) hexanoic acid and intermediate thereof (2004-01-27),

8. 6660730 - Anhydrous mirtazapine and process for preparing the same (2003-12-09),

9. 6649768 - Production methods of imidazole compound and salt thereof and intermediates therefor (2003-11-18),

10. 6610851 - Process for preparing a piperidine derivative (2003-08-26),

11. 6552189 - Anhydrous mirtazapine crystals and process for preparing the same (2003-04-22),

12. 6541637 - Method for drying anhydrous paroxetine hydrochloride (2003-04-01),

13. 6495685 - Process for preparing piperazine derivatives (2002-12-17),

14. 6476227 - Piperidine derivative and process for preparing the same (2002-11-05),

15. 6458975 - Production methods of citalopram and an intermediate therefor (2002-10-01),

Sumika Fine Chemicals, Co.,Ltd. is a leading chemical company specializing in the development, production, and distribution of high-quality chemicals. With a strong focus on research and innovation, Sumika Fine Chemicals offers a wide range of cutting-edge solutions for various industries including electronics, pharmaceuticals, and automotive. Our commitment to sustainable practices and customer satisfaction has made us a trusted partner for businesses worldwide. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

55 Patents

#150 in Osaka

#1,582 in Japan

#12,577 in the World

Sumika Fine Chemicals, Co.,ltd.

Forward Citations = 132

54 inventors:

Nobushige Itaya (19 out of 56 patents)

Masami Igi (16 out of 20 patents)

Kiyoshi Sugi (15 out of 17 patents)

4. Tadashi Katsura (12 out of 25 patents)

5. Tetsuya Shintaku (9 out of 12 patents)

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