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Forward Citations = 7

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21 inventors (with patents filed for the assignee):

Kenichi Sakai (3 out of 18 patents)

Hiroyuki Nohira (3 out of 45 patents)

Atsushi Yuzawa (2 out of 2 patents)

4. Hisamichi Murakami (2 out of 2 patents)

5. Takashi Kimura (1 out of 84 patents)

6. Rumiko Sakurai (1 out of 1 patent)

7. Kaoru Hatahira (1 out of 1 patent)

8. Kazuhiko Saigo (1 out of 8 patents)

9. Kazushi Kinbara (1 out of 4 patents)

10. Yukihiko Hashimoto (1 out of 4 patents)

11. Yoshiko Harada (1 out of 1 patent)

12. Koji Ohsaka (1 out of 1 patent)

13. Hirofumi Noda (1 out of 1 patent)

14. Shoko Takebayashi (1 out of 1 patent)

15. Masami Yajima (1 out of 2 patents)

6 patents: Sort by Forward Citations

1. 7119211 - Process for preparing optically active 3-(methylamino)-1-(2-thienyl) propan-1-ol and intermediates for preparation (2006-10-10),

2. 6342636 - Process for preparing optically active amines and optically active carboxylic acids, and intermediates for preparation (2002-01-29),

3. 6310242 - Process for preparing D-alloisoleucine and intermediates for preparation (2001-10-30),

4. 5792869 - Process for preparing optically active piperazine derivatives and (1998-08-11),

5. 4999130 - Optically active compound, process for producing same and liquid crystal (1991-03-12),

6. 4950772 - Method of racemization of optically active tetrahydrofuran-2-carboxylic (1990-08-21),

Yamakawa Chemical Industry Co., Ltd. is a leading manufacturer of specialty chemicals in Japan. With a focus on innovation and sustainability, they provide a wide range of high-quality products for various industries including pharmaceuticals, electronics, and construction. Their commitment to excellence and customer satisfaction has made them a trusted partner for businesses worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

6 Patents

#2,212 in Tokyo

#5,843 in Japan

Tokyo, Japan

Yamakawa Chemical Industry Co., Ltd.