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Kosmek Ltd.

USPTO Granted Patents = 71

% Expired Patents = 23.9

EPO Patents = 52

Trademarks = 1

Forward Citations = 92

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23 inventors (with patents filed for the assignee):

Keitaro Yonezawa (24 out of 90 patents)

Yosuke Haruna (19 out of 24 patents)

Hideaki Yokota (12 out of 17 patents)

4. Ryota Kojima (7 out of 7 patents)

5. Masahiro Yoshimi (7 out of 7 patents)

6. Gaku Yoshimura (7 out of 11 patents)

7. Akira Arisato (5 out of 9 patents)

8. Tsutomu Shirakawa (4 out of 17 patents)

9. Masakazu Yoshida (3 out of 3 patents)

10. Hiroshi Akamatsu (3 out of 15 patents)

11. Kenta Kaji (2 out of 2 patents)

12. Hironori Yamada (2 out of 5 patents)

13. Ryuichi Wada (1 out of 1 patent)

14. Kenta Otani (1 out of 1 patent)

15. Takeshi Tsuchida (1 out of 1 patent)

Core Competencies:

Clamping Apparatus

Magnetic Clamp

Pneumatic Cylinder

Positioning Device

Remote Diagnostic System

Actuator

Check Valve

Suction Positioning

Force Multiplier

Cylinder Device

Gripping Device

Work Support

71 patents: Sort by Forward Citations

1. 12680564 - Rotary clamp device (2026-07-14),

2. 12638117 - Coupling device (2026-05-26),

3. 12427585 - Element changer (2025-09-30),

4. 12345342 - Check valve device (2025-07-01),

5. 12214465 - Work support (2025-02-04),

6. 12186957 - Magnetic clamp device (2025-01-07),

7. 12134157 - Clamping apparatus (2024-11-05),

8. 12115615 - Work support (2024-10-15),

9. 12103123 - Connecting device (2024-10-01),

10. 12090639 - Attaching/detaching structure (2024-09-17),

11. 12076889 - Adhesion force confirmation method and adhesion force confirmation device (2024-09-03),

12. 12066022 - Motor and hydraulic pump device including the motor (2024-08-20),

13. 12042971 - Remote diagnostic system (2024-07-23),

14. 11994155 - Cylinder device (2024-05-28),

15. 11951581 - Clamp system equipped with function for detecting behavior of object to be clamped (2024-04-09),

Kosmek Ltd., based in Hyogo, Japan, specializes in advanced clamping technology, focusing on the development and manufacturing of innovative clamping apparatuses. The company offers a diverse range of products, including magnetic clamps, pneumatic cylinders, and positioning devices, which are essential in various industrial applications. Additionally, Kosmek is engaged in creating remote diagnostic systems and actuators, enhancing operational efficiency and precision in manufacturing processes. Their expertise in check valves and suction positioning further solidifies their role as a key player in the clamping technology sector.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

71 Patents

#19 in Hyogo

#1,399 in Japan

#10,495 in the World

Kosmek Ltd.

Forward Citations = 92

23 inventors:

Keitaro Yonezawa (24 out of 90 patents)

Yosuke Haruna (19 out of 24 patents)

Hideaki Yokota (12 out of 17 patents)

4. Ryota Kojima (7 out of 7 patents)

5. Masahiro Yoshimi (7 out of 7 patents)

Please report any incorrect information to [email protected]

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