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Kaken Pharmaceutical Company, Ltd.

USPTO Granted Patents = 136

CIPO Patents = 14

EPO Patents = 23

Trademarks = 2

Forward Citations = 783

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329 inventors (with patents filed for the assignee):

Kenji Hirai (20 out of 29 patents)

Tadashi Arika (12 out of 12 patents)

Nobuo Ishiyama (11 out of 11 patents)

4. Mamoru Yokoo (10 out of 10 patents)

5. Tomoyuki Yano (10 out of 10 patents)

6. Jun Nakano (9 out of 13 patents)

7. Satoru Ikegami (8 out of 8 patents)

8. Tsutomu Nakamura (8 out of 13 patents)

9. Mitsuo Mimura (8 out of 8 patents)

10. Shoin Nagato (8 out of 9 patents)

11. Makoto Okumura (8 out of 9 patents)

12. Emiko Ejiri (8 out of 9 patents)

13. Takahiko Murata (7 out of 79 patents)

14. Takanobu Naito (7 out of 7 patents)

15. Motoyuki Yajima (7 out of 11 patents)

Core Competencies:

Heteroaromatic Amide Derivative

Airless Container

Biaryl Derivative

Sustained-Release Pharmaceutical Composition

EP4 Agonist

Humanized Monoclonal Antibody

Pyrazole Derivative

N-Acylated Lipophilic Amino Acid Derivatives

Gel Composition for Mycosis

Medicine Mixing Device

Therapeutic Agent for Dentin-Pulp Regeneration

Vessel Embolic Material

136 patents: Sort by Forward Citations

1. 12421225 - Heteroaromatic amide derivative and medicament containing the same (2025-09-23),

2. 12196592 - Measuring mechanism, and fixed-quantity dispensing container and fixed-quantity applicator including the same (2025-01-14),

3. 11400471 - Airless container (2022-08-02),

4. 11084787 - Method for producing 1-methylpyrrolidin-3-ol (2021-08-10),

5. 10829475 - Production and purification methods for efinaconazole (2020-11-10),

6. 10647675 - Biaryl derivative and medicine containing same (2020-05-12),

7. 10646402 - Syringe device for communicating two types of substances to each other and method thereof (2020-05-12),

8. 10640484 - Method for producing (R)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione and intermediate for producing same (2020-05-05),

9. D880692 - Medicine mixing device (2020-04-07),

10. 10478601 - Applicator (2019-11-19),

11. 10000476 - Pyridone derivative, pharmaceutical containing the same and methods of use thereof (2018-06-19),

12. 9855257 - 4-alkynyl imidazole derivative and medicine comprising same as active ingredient (2018-01-02),

13. 9593081 - 4-alkynyl imidazole derivative and medicine comprising same as active ingredient (2017-03-14),

14. 9580444 - Polycyclic pyrazolinone derivative and herbicide comprising same as effective component thereof (2017-02-28),

15. 9518041 - (+)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione and drug containing same (2016-12-13),

Kaken Pharmaceutical Company, Ltd. is a Japanese pharmaceutical company specializing in the research and development, manufacturing, and marketing of prescription drugs, over-the-counter drugs, and medical devices. With a focus on dermatology, immunology, and allergy, Kaken is committed to providing innovative solutions to improve the health and well-being of people worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

136 Patents

#30 in

#887 in Japan

#5,776 in the World

Kaken Pharmaceutical Company, Ltd.

Forward Citations = 783

329 inventors:

Kenji Hirai (20 out of 29 patents)

Tadashi Arika (12 out of 12 patents)

Nobuo Ishiyama (11 out of 11 patents)

4. Mamoru Yokoo (10 out of 10 patents)

5. Tomoyuki Yano (10 out of 10 patents)

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