Tokyo, Japan

Koken Company, Limited


USPTO Granted Patents = 54

% Expired Patents = 18.5



Trademarks = 2

Forward Citations = 1,973

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92 inventors (with patents filed for the assignee):

goldMedal Teruo Miyata (25 out of 37 patents)

silverMedal Masayasu Furuse (10 out of 10 patents)

bronzeMedal Yasuharu Noishiki (8 out of 9 patents)

4.  Takahiro Ochiya (5 out of 46 patents)

5.  Taichiro Akiyama (5 out of 13 patents)

6.  Kazuhiko Kodaira (4 out of 4 patents)

7.  Ken Nakata (3 out of 32 patents)

8.  Yu Aso (3 out of 4 patents)

9.  Kimi Honma (3 out of 3 patents)

10.  Akihiko Sano (3 out of 12 patents)

11.  Masaaki Terada (3 out of 8 patents)

12.  Keiji Fujioka (3 out of 23 patents)

13.  Yoshio Sasaki (3 out of 7 patents)

14.  Yoshimitsu Kuroyanagi (3 out of 6 patents)

15.  Hiroshi Uno (2 out of 2 patents)


Core Competencies:
Collagen Sponge
Vascular Prosthesis
Sustained-Release Formulation
Gene Preparations
Medical Training Model
Cell Culture Carrier
Antithrombogenic Material
Bioprosthetic Valve
Intracorporeally Injectable
Artificial Skin
Hyaluronic Acid
Cell Transfection Array

54 patents:

Company Overview
Koken Company, Limited, based in Tokyo, specializes in the development and manufacturing of advanced medical materials. The company focuses on innovative solutions such as collagen sponges, vascular prostheses, and sustained-release formulations, contributing significantly to the medical field. Koken's expertise extends to gene preparations, medical training models, and cell culture carriers, as well as antithrombogenic materials and bioprosthetic valves, positioning it as a key player in enhancing healthcare technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

Koken Company, Limited USPTO Patent Assignee Logo
54 Patents

#763 in Tokyo

#1,628 in Japan

#13,109 in the World

Tokyo, JP
Tokyo, Japan
Forward Citations = 1,973

92 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Koken Company, Limited. Retrieved from https://idiyas.com/company/koken-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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