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Daiichi Seiyaku Co., Ltd.

USPTO Granted Patents = 70

Forward Citations = 668

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133 inventors (with patents filed for the assignee):

Isao Hayakawa (12 out of 27 patents)

Shohgo Atarashi (8 out of 12 patents)

Shunzo Aibara (6 out of 6 patents)

4. Shinichiro Ashida (5 out of 7 patents)

5. Tosaku Miki (5 out of 6 patents)

6. Tamotsu Miwa (5 out of 5 patents)

7. Fumiyoshi Ishikawa (5 out of 5 patents)

8. Tetsuo Shiba (4 out of 14 patents)

9. Sadao Hirota (4 out of 7 patents)

10. Hidemasa Ogawa (4 out of 4 patents)

11. Masahide Asano (4 out of 6 patents)

12. Hiroshi Fujita (4 out of 7 patents)

13. Yasushi Abiko (4 out of 4 patents)

14. Yuichi Yamamura (4 out of 12 patents)

15. Hitoshi Yamauchi (3 out of 10 patents)

Core Competencies:

Gene Products

Pyridonecarboxylic Acid Derivatives

Baculovirus Vectors

Thrombocytopenia Treatment

Tissue Plasminogen Activator

Influenza Vaccine

Liposome Production

Antibacterial Agents

Cephalosporin Derivatives

Optical Resolution

Triazolopyrimidine Derivatives

Muramylpeptide Derivatives

70 patents: Sort by Forward Citations

1. 5646013 - Method of producing foreign gene products (1997-07-08),

2. 5476950 - Intermediates for pyridonecarboxylic acid derivatives (1995-12-19),

3. 5416222 - 3-pyrrolidine methanamines wherein the alpha-carbon is substituted by 1 (1995-05-16),

4. 5380874 - Intermediates for pyridonecarboxylic acid derivatives (1995-01-10),

5. 5312999 - Propoxybenzene derivatives and process for preparing the same (1994-05-17),

6. 5286723 - Spiro compound (1994-02-15),

7. 5118616 - Method of producing substances in living silkworms (1992-06-02),

8. 5110729 - Method of producing peptides using baculovirus vectors in cultured cells (1992-05-05),

9. 5098912 - Pyridonecarboxylic acid derivatives (1992-03-24),

10. 5096891 - Cyclic amp derivative ointments (1992-03-17),

11. 5037804 - Agent for preventing and treating thrombocytopenia (1991-08-06),

12. 5019499 - Method of producing peptides by transforming myeloma cells with a (1991-05-28),

13. 5006647 - Phosphorus containing disaccharide derivatives (1991-04-09),

14. 4985557 - Optically active pyridobenzoxazine derivatives and intermediates thereof (1991-01-15),

15. 4983725 - Mannobiose derivatives (1991-01-08),

Daiichi Seiyaku Co., Ltd. is a pharmaceutical company based in Japan. Established in 1942, it focuses on the research, development, manufacturing, and marketing of a wide range of pharmaceutical products. With a strong commitment to innovation, quality, and providing affordable healthcare solutions, Daiichi Seiyaku strives to improve the well-being and quality of life of people around the world.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

70 Patents

#584 in Tokyo

#1,377 in Japan

#10,345 in the World

Daiichi Seiyaku Co., Ltd.

Forward Citations = 668

133 inventors:

Isao Hayakawa (12 out of 27 patents)

Shohgo Atarashi (8 out of 12 patents)

Shunzo Aibara (6 out of 6 patents)

4. Shinichiro Ashida (5 out of 7 patents)

5. Tosaku Miki (5 out of 6 patents)

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