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Toa Eiyo Ltd.

USPTO Granted Patents = 30

% Expired Patents = 56.7

CIPO Patents = 2

EPO Patents = 11

Forward Citations = 254

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101 inventors (with patents filed for the assignee):

Kentaro Kogi (8 out of 9 patents)

Kunihiro Minami (5 out of 5 patents)

Hidekazu Masaki (5 out of 5 patents)

4. Kazuhiro Uemoto (5 out of 5 patents)

5. Atsuo Takahashi (5 out of 5 patents)

6. Masayuki Kageyama (4 out of 4 patents)

7. Takeshi Hasegawa (4 out of 4 patents)

8. Shin-ichi Kazayama (4 out of 4 patents)

9. Shin-ichi Yamada (4 out of 6 patents)

10. Yoshihiro Iwao (3 out of 14 patents)

11. Katsuhiro Okada (3 out of 22 patents)

12. Shuichiro Yuasa (3 out of 4 patents)

13. Koichi Takayanagi (3 out of 3 patents)

14. Hideki Yamada (3 out of 3 patents)

15. Fumiya Yoneyama (3 out of 3 patents)

Core Competencies:

Bisoprolol

Glaucoma

Cyclic Hydrocarbon

Tropane Derivatives

Adenosine Derivatives

Percutaneous Administration

Fused Imidazole

Transdermal Preparation

Bicyclic Compound

Ischemic Diseases

Cardiovascular

Percutaneous Gel

30 patents: Sort by Forward Citations

1. 10717904 - Adhesive preparation containing bisoprolol (2020-07-21),

2. 10682323 - Therapeutic agent for glaucoma (2020-06-16),

3. 9950989 - Cyclic hydrocarbon compound (2018-04-24),

4. 9856250 - Substituted tropane derivatives (2018-01-02),

5. 9714213 - 4-aminomethylbenzoic acid derivative (2017-07-25),

6. 9290440 - Bicyclic compound (2016-03-22),

7. 9096531 - Fused imidazole derivative (2015-08-04),

8. 8808731 - Adhesive pharmaceutical preparation containing bisoprolol (2014-08-19),

9. 8771724 - Percutaneous absorption enhancer and transdermal preparation using the same (2014-07-08),

10. 8703178 - Percutaneous administration device of bisoprolol (2014-04-22),

11. 8546452 - [object Object] (2013-10-01),

12. 8298572 - Adhesive pharmaceutical preparation containing bisoprolol (2012-10-30),

13. 7875625 - Cyclohepta[b]pyridine-3-carbonylguanidine derivative and pharmaceutical product containing same (2011-01-25),

14. 7399781 - N-substituted benzothiophenesulfonamide derivatives (2008-07-15),

15. 7323489 - Proline ester and preparation containing the same for percutaneous administration (2008-01-29),

Toa Eiyo Ltd. is a prominent Japanese company based in Tokyo, specializing in the development and manufacturing of advanced medical devices and pharmaceuticals. The organization focuses on innovative solutions that enhance healthcare delivery and improve patient outcomes. With a commitment to research and development, Toa Eiyo is engaged in various technology domains, including drug formulation and delivery systems, contributing to the evolving landscape of medical technology in Japan and beyond.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

30 Patents

#1,059 in Tokyo

#2,303 in Japan

#21,853 in the World

Toa Eiyo Ltd.

Forward Citations = 254

101 inventors:

Kentaro Kogi (8 out of 9 patents)

Kunihiro Minami (5 out of 5 patents)

Hidekazu Masaki (5 out of 5 patents)

4. Kazuhiro Uemoto (5 out of 5 patents)

5. Atsuo Takahashi (5 out of 5 patents)

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