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Hiroshima, Japan

Two Cells Co., Ltd.

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USPTO Granted Patents = 18

% Expired Patents = 38.9

EPO Patents = 17

Forward Citations = 28

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47 inventors (with patents filed for the assignee):

Koichiro Tsuji (9 out of 10 patents)

Yukio Kato (8 out of 14 patents)

Jin Chang Shao (5 out of 5 patents)

4. Hidemi Kurihara (3 out of 3 patents)

5. Hiroyuki Kawaguchi (3 out of 4 patents)

6. Katsuhiro Takeda (3 out of 3 patents)

7. Hideki Shiba (3 out of 3 patents)

8. Noriyoshi Mizuno (3 out of 3 patents)

9. Hiroshi Yoshino (3 out of 3 patents)

10. Naohiko Hasegawa (3 out of 3 patents)

11. Hiroaki Shinohara (3 out of 3 patents)

12. Masahiro Nishimura (3 out of 3 patents)

13. Yuki Katsura (2 out of 2 patents)

14. Norimasa Nakamura (2 out of 2 patents)

15. Hideki Yoshikawa (2 out of 3 patents)

18 patents: Sort by Forward Citations

1. 10507266 - Cartilage-damage treatment agent and method for producing same (2019-12-17),

2. 10184112 - Culture medium additive for use in serum-free culturing of animal cell, kit and use thereof (2019-01-22),

3. 10131877 - Differentiation-inducing culture medium additive and use thereof (2018-11-20),

4. 9694107 - Scaffold-free self-organized 3D synthetic tissue (2017-07-04),

5. 9394521 - Cell preparation containing mesenchymal stem cells, and method for producing same (2016-07-19),

6. 9370606 - Scaffold-free self-organized 3D synthetic tissue (2016-06-21),

7. 9234897 - Method for distinguishing mesenchymal stem cell using molecular marker and use thereof (2016-01-12),

8. 9089606 - Brain-derived neurotrophic factor or neurotrophin-4/5 to treat periodontal diseases and pulpal diseases (2015-07-28),

9. 9074176 - Culture medium additive for use in serum-free culturing of animal cell, kit and use thereof (2015-07-07),

10. 8852584 - Bactericide having selectivity to cariogenic bacterium, and a method for sterilization of cariogenic bacterium (2014-10-07),

11. 8722404 - Sheet for guiding regeneration of mesenchymal tissue and production method thereof (2014-05-13),

12. 8513191 - Therapeutic agent and therapeutic method for periodontal diseases and pulpal diseases (2013-08-20),

13. 8158752 - Therapeutic agent and therapeutic method for periodontal diseases and pulpal diseases (2012-04-17),

14. 8119397 - Therapeutic agents and therapeutic methods for treating injured tissue (2012-02-21),

15. 8039256 - Culturing method of mesenchymal stem cell (2011-10-18),

Company Overview

Two Cells Co., Ltd., based in Hiroshima, Japan, specializes in advanced cell technology and innovative solutions for various applications. The company focuses on the development and manufacturing of cutting-edge products in the fields of biotechnology and medical devices, aiming to enhance healthcare outcomes through scientific advancements. With a commitment to research and development, Two Cells is dedicated to pushing the boundaries of technology to address complex challenges in the life sciences sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#27 in Hiroshima, 729-3431

#3,125 in Japan

#34,263 in the World

Hiroshima, Japan

Two Cells Co., Ltd.

Forward Citations = 28

47 inventors:

Koichiro Tsuji (9 out of 10 patents)

Yukio Kato (8 out of 14 patents)

Jin Chang Shao (5 out of 5 patents)

4. Hidemi Kurihara (3 out of 3 patents)

5. Hiroyuki Kawaguchi (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Two Cells Co., Ltd.. Retrieved from https://idiyas.com/company/two-cells-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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