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Yamada Chemical Co., Ltd.

USPTO Granted Patents = 16

Forward Citations = 73

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24 inventors (with patents filed for the assignee):

Katsuhiko Tsunemitsu (12 out of 12 patents)

Hajime Kawai (9 out of 9 patents)

Yoshiharu Fujino (5 out of 5 patents)

4. Toru Yashiro (4 out of 16 patents)

5. Hideaki Fujisaki (3 out of 3 patents)

6. Seiichi Nieda (3 out of 3 patents)

7. Masatoshi Taniguchi (2 out of 4 patents)

8. Toshiro Narizuka (2 out of 3 patents)

9. Kazuhiko Gendai (2 out of 2 patents)

10. Youji Shimizu (2 out of 2 patents)

11. Hiroaki Tomita (1 out of 1 patent)

12. Yutaka Ueda (1 out of 20 patents)

13. Kozo Mizuno (1 out of 1 patent)

14. Yoshinori Uda (1 out of 1 patent)

15. Tadashi Imai (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 6043355 - Phthalocyanine compounds (2000-03-28),

2. 5968708 - Optical recording medium and method of producing the same (1999-10-19),

3. 5580696 - Optical recording medium and method of producing the same (1996-12-03),

4. 5532033 - Optical information recording medium (1996-07-02),

5. 5286702 - Phthalide compound and recording material using the compound (1994-02-15),

6. 5179066 - Thermosensitive recording material (1993-01-12),

7. 4892973 - Process for producing 1,1-diphenylalkenes (1990-01-09),

8. 4845245 - Process for producing (1989-07-04),

9. 4835291 - Divinyl compounds and chromogenic recording-material prepared by using (1989-05-30),

10. 4820841 - Chromogenic quinoline compounds (1989-04-11),

11. 4814320 - Heat-sensitive recording material (1989-03-21),

12. 4808567 - Divinyl compounds and chromogenic recording-material prepared by using (1989-02-28),

13. 4747875 - Chromogenic azaphthalide compound and a colour-forming recording (1988-05-31),

14. 4598150 - Chromogenic 1-(3-methoxy-4-alkoxyphenyl)-2-(2'-quinolyl)ethylene (1986-07-01),

15. 4564679 - Chromogenic compounds (1986-01-14),

Yamada Chemical Co., Ltd. is a leading chemical company specializing in the manufacture of high-quality industrial chemicals. With a commitment to innovation and sustainability, Yamada Chemical Co., Ltd. provides a wide range of chemical solutions for various industries, including pharmaceuticals, electronics, and agriculture. The company is known for its dedication to quality control and customer satisfaction, making them a trusted partner for businesses around the world.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

16 Patents

#80 in Kyoto 615-0031

#3,261 in Japan

#36,634 in the World

Yamada Chemical Co., Ltd.

Forward Citations = 73

24 inventors:

Katsuhiko Tsunemitsu (12 out of 12 patents)

Hajime Kawai (9 out of 9 patents)

Yoshiharu Fujino (5 out of 5 patents)

4. Toru Yashiro (4 out of 16 patents)

5. Hideaki Fujisaki (3 out of 3 patents)

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