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Daiwa Fine Chemicals Co., Ltd.

USPTO Granted Patents = 10

EPO Patents = 1

Forward Citations = 122

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33 inventors (with patents filed for the assignee):

Keigo Obata (8 out of 15 patents)

Yoshiaki Okuhama (7 out of 9 patents)

Takao Takeuchi (6 out of 10 patents)

4. Masakazu Yoshimoto (6 out of 8 patents)

5. Hidemi Nawafune (5 out of 14 patents)

6. Seiichiro Nakao (3 out of 6 patents)

7. Seishi Masaki (3 out of 6 patents)

8. Kiyotaka Tsuji (2 out of 4 patents)

9. Tetsuji Nishikawa (2 out of 3 patents)

10. Shingo Kitamura (2 out of 2 patents)

11. Hidenori Tsuji (2 out of 4 patents)

12. Yasuhito Kohashi (2 out of 2 patents)

13. Masatoshi Majima (1 out of 85 patents)

14. Shigeyoshi Nakayama (1 out of 4 patents)

15. Shinji Inazawa (1 out of 57 patents)

10 patents: Sort by Forward Citations

1. 7938948 - Silver and silver alloy plating bath (2011-05-10),

2. 7628903 - Silver and silver alloy plating bath (2009-12-08),

3. 7166152 - Pretreatment solution for providing catalyst for electroless plating, pretreatment method using the solution, and electroless plated film and/or plated object produced by use of the method (2007-01-23),

4. 7056448 - Method for forming circuit pattern (2006-06-06),

5. 6852210 - Plating method and plating bath precursor used therefor (2005-02-08),

6. 6235093 - Aqueous solutions for obtaining noble metals by chemical reductive deposition (2001-05-22),

7. 6183545 - Aqueous solutions for obtaining metals by reductive deposition (2001-02-06),

8. 5651873 - Electroplating solution for forming Pb-Sn alloy bump electrodes on (1997-07-29),

9. 5618404 - Electrolytic process for producing lead sulfonate and tin sulfonate for (1997-04-08),

10. 4673470 - Tin, lead, or tin-lead alloy plating bath (1987-06-16),

Daiwa Fine Chemicals Co., Ltd. is a leading chemical company specializing in the production of high-quality fine chemicals. With a strong commitment to innovation and sustainability, Daiwa Fine Chemicals Co., Ltd. strives to provide customers with cutting-edge products and solutions tailored to their specific needs. Founded in 1944, the company has established a reputation for excellence in the chemical industry and continues to push boundaries with its state-of-the-art facilities and research capabilities.

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

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USPTO Data Jan 1 1976 - Jan 6 2026

10 Patents

#4 in Akashi

#4,288 in Japan

#54,349 in the World

Daiwa Fine Chemicals Co., Ltd.

Forward Citations = 122

33 inventors:

Keigo Obata (8 out of 15 patents)

Yoshiaki Okuhama (7 out of 9 patents)

Takao Takeuchi (6 out of 10 patents)

4. Masakazu Yoshimoto (6 out of 8 patents)

5. Hidemi Nawafune (5 out of 14 patents)

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