Trademarks = 2

Forward Citations = 102

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16 inventors (with patents filed for the assignee):

Mitsuo Kushino (1 out of 38 patents)

Masato Okada (1 out of 1 patent)

Makoto Sakamoto (1 out of 1 patent)

4. Iwao Fuzikawa (1 out of 3 patents)

5. Kazunari Yamada (1 out of 1 patent)

6. Setsuo Okamoto (1 out of 1 patent)

7. Masahisa Iba (1 out of 1 patent)

8. Katsukiyo Marukawa (1 out of 5 patents)

9. Kinji Terada (1 out of 1 patent)

10. Masahiro Naito (1 out of 2 patents)

11. Katsuo Mitani (1 out of 3 patents)

12. Shigeo Sadahiro (1 out of 1 patent)

13. Nobuyuki Nakagoshi (1 out of 1 patent)

14. Yohji Takahashi (1 out of 1 patent)

15. Kenji Morinaga (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 5082770 - Method for quantitative determination of polyamines (1992-01-21),

2. 4843021 - Immunological assay method (1989-06-27),

3. 4722970 - Oriented polyolefin film (1988-02-02),

4. 4426176 - L-Shaped concrete block and method for constructing a retaining wall by (1984-01-17),

5. 4225565 - Process for treating waste slags (1980-09-30),

Tokuyama Soda Co., Ltd. is a chemical company based in Japan that specializes in the production of soda ash, caustic soda, and other chemical products. With a history dating back to 1917, the company has a strong reputation for quality and innovation in the industry. Their products are used in a wide range of industries, including glass, paper, and food manufacturing.

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Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

5 Patents

#1 in Tokuyama

#6,487 in Japan

Tokuyama, Japan

Tokuyama Soda Co., Ltd.