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Forward Citations = 48

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13 inventors (with patents filed for the assignee):

Yoshihiro Hatano (3 out of 4 patents)

Yasuhisa Iwasaki (2 out of 7 patents)

Seishi Ikegami (2 out of 2 patents)

4. Yojiro Kumagae (1 out of 16 patents)

5. Fumitoshi Emori (1 out of 1 patent)

6. Takao Yoshimura (1 out of 1 patent)

7. Koichi Watanabe (1 out of 1 patent)

8. Hiroaki Harada (1 out of 1 patent)

9. Akira Kotone (1 out of 1 patent)

10. Seiji Ikegami (1 out of 2 patents)

11. Kenji Itoh (1 out of 1 patent)

12. Mansuke Matsumoto (1 out of 1 patent)

13. Tsunehito Eda (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4622179 - Naphthalocyanine compounds (1986-11-11),

2. 4523018 - Certain bis(benzoyl)pyridine compounds (1985-06-11),

3. 4420616 - Oxidative process for the preparation of copper quinolinate (1983-12-13),

4. 4316026 - Process for the preparation of copper quinolinate (1982-02-16),

5. 4218432 - Coloring agent and a composition including the same for coloring toilet (1980-08-19),

6. 4200751 - Lactones of quinoline carboxylic acids (1980-04-29),

7. 4087458 - Process for preparation of 2-(amylbenzoyl)benzoic acid (1978-05-02),

Yamamoto Kagaku Gosei Co., Ltd. is a leading manufacturer of chemical products and materials. With a focus on innovation and technology, the company offers a wide range of high-quality products including resins, adhesives, and specialty chemicals. Founded in 1921, Yamamoto Kagaku Gosei has a long history of excellence in the industry and continues to be a trusted partner for businesses worldwide.

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USPTO Data Jan 1 1976 - Dec 9 2025

7 Patents

#5 in Yao

#5,301 in Japan

Yao, Japan

Yamamoto Kagaku Gosei Co., Ltd.