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For the Inventor, By the Inventor

Tokyo, Japan

Koganei Corporation

Calculating rank
USPTO Granted Patents = 142

% Expired Patents = 38.0


Trademarks = 3

Forward Citations = 774

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103 inventors (with patents filed for the assignee):

goldMedal Takeo Yajima (23 out of 23 patents)

silverMedal Yoshinari Fukada (11 out of 11 patents)

bronzeMedal Akiyoshi Horikawa (10 out of 11 patents)

4.  Takeshi Yamauchi (9 out of 16 patents)

5.  Hiraku Sakai (8 out of 8 patents)

6.  Hirokazu Ohki (6 out of 6 patents)

7.  Joji Inaba (6 out of 6 patents)

8.  Yuta Ohmura (6 out of 6 patents)

9.  Kazuya Okamoto (5 out of 119 patents)

10.  Hiroshi Yoshida (5 out of 156 patents)

11.  Kazuyoshi Onezawa (5 out of 5 patents)

12.  Naoki Minowa (5 out of 5 patents)

13.  Mitsuo Noda (5 out of 22 patents)

14.  Akira Watanabe (5 out of 82 patents)

15.  Takashi Doi (4 out of 61 patents)


Core Competencies:
Flow-Rate Control Valve
Liquid Supply Device
Solenoid Valve
Shock Absorber
Electromagnetic Valve
Air Blow Gun
Chemical Liquid Supply
Position Detecting Apparatus
Actuator
Filter Regulator
Ion Generator
Manifold Solenoid Valve

142 patents:

1. 12663097 - Control valve (2026-06-23),
2. 12571485 - Flow-rate control valve actuator (2026-03-10),
3. 12523202 - Liquid supply device (2026-01-13),
4. 12404293 - Method for producing glycan, building block for gylican synthesis, and compound (2025-09-02),
5. 12343754 - Liquid supplying device (2025-07-01),
6. 12140242 - Manifold electromagnetic valve and valve base (2024-11-12),
7. 12117093 - Manifold solenoid valve and valve base (2024-10-15),
8. 12109685 - Alignment device (2024-10-08),
9. 11994225 - Solenoid valve manifold (2024-05-28),
10. 11732818 - Electromagnetic valve, valve device, fluid control device, and electromagnetic valve replacement method (2023-08-22),
11. 11192051 - Element assembly and filter (2021-12-07),
12. 11148156 - Switching valve and intermittent air blow gun (2021-10-19),
13. 10962987 - Group robot and collective movement controlling method for group robot (2021-03-30),
14. 10870141 - Shock absorber and press apparatus using the same (2020-12-22),
15. 10864642 - Compliance unit (2020-12-15),
Company Overview
Koganei Corporation, headquartered in Tokyo, Japan, specializes in fluid control technology, focusing on the development and manufacturing of advanced components such as flow-rate control valves, solenoid valves, and liquid supply devices. The company is recognized for its expertise in various applications, including shock absorbers, electromagnetic valves, and air blow guns, catering to diverse industries that require precise fluid management solutions. Koganei's innovations also extend to position detecting apparatuses, enhancing operational efficiency across multiple sectors.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Koganei Corporation USPTO Patent Assignee Logo
142 Patents

#437 in Tokyo

#890 in Japan

#5,733 in the World

Tokyo, JP
Tokyo, Japan

Koganei Corporation

Forward Citations = 774

103 inventors:

goldMedal Takeo Yajima (23 out of 23 patents)

silverMedal Yoshinari Fukada (11 out of 11 patents)

bronzeMedal Akiyoshi Horikawa (10 out of 11 patents)

4.  Takeshi Yamauchi (9 out of 16 patents)

5.  Hiraku Sakai (8 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Koganei Corporation. Retrieved from https://idiyas.com/company/koganei

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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