% Expired Patents = 35.7

EPO Patents = 2

Forward Citations = 682

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6 inventors (with patents filed for the assignee):

Tetsuya Yamamoto (10 out of 38 patents)

Tomio Sugahara (4 out of 4 patents)

Michihiko Matsushima (2 out of 2 patents)

4. Atsushi Sugahara (1 out of 1 patent)

5. Masayoshi Yokoyama (1 out of 2 patents)

6. Takamasa Onuki (1 out of 2 patents)

14 patents: Sort by Forward Citations

1. 9901730 - Stopcock flow path switching device (2018-02-27),

2. 9789244 - Injector head with rotation mechanism (2017-10-17),

3. 9694146 - Joint mechanism (2017-07-04),

4. 9649429 - Priming method (2017-05-16),

5. 8652110 - Valve-equipped hand switch and chemical liquid introduction system (2014-02-18),

6. 6530907 - Channel switching apparatus (2003-03-11),

7. 6312410 - Auxiliary appliance for syringe fixation (2001-11-06),

8. 6004285 - Injector head for medical use (1999-12-21),

9. 5997484 - Probe for measuring epidural pressure and elasticity of brain parenchyma (1999-12-07),

10. 5968015 - Injector head for medical use (1999-10-19),

11. 5857657 - Stand for medical instruments (1999-01-12),

12. 5662666 - Ligative suturer (1997-09-02),

13. 5464014 - Display device for bioelectrical and biophysical phenomena (1995-11-07),

14. 5239265 - Display device of bio-electrical, bio-physical phenomena (1993-08-24),

Company Overview

Sugan Co., Ltd. is a prominent company based in Osaka, Japan, specializing in the development and manufacturing of advanced electronic components and systems. The organization focuses on innovative solutions in the fields of automation, control systems, and sensor technology, catering to various industries including automotive, industrial, and consumer electronics. With a commitment to research and development, Sugan aims to enhance operational efficiency and drive technological advancements in its core domains.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#386 in Osaka

#3,580 in Japan

#42,249 in the World

Osaka, Japan

Sugan Co., Ltd.

Forward Citations = 682

6 inventors:

Tetsuya Yamamoto (10 out of 38 patents)

Tomio Sugahara (4 out of 4 patents)

Michihiko Matsushima (2 out of 2 patents)

4. Atsushi Sugahara (1 out of 1 patent)

5. Masayoshi Yokoyama (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sugan Co., Ltd.. Retrieved from https://idiyas.com/company/sugan-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]

2 patents (EPO):

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]