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Tokin Corporation

USPTO Granted Patents = 149

CIPO Patents = 8

EPO Patents = 4

Trademarks = 12

Forward Citations = 1,766

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293 inventors (with patents filed for the assignee):

Shigeyoshi Yoshida (16 out of 34 patents)

Akiri Urata (9 out of 14 patents)

Mitsuharu Sato (8 out of 13 patents)

4. Kenichi Chatani (7 out of 9 patents)

5. Katsunori Kumasaka (7 out of 9 patents)

6. Tetsuo Yoshida (7 out of 8 patents)

7. Yoshiaki Fuda (7 out of 7 patents)

8. Yuichi Tokano (6 out of 6 patents)

9. Yasuhisa Sugawara (5 out of 19 patents)

10. Koichi Kondo (5 out of 13 patents)

11. Koji Kamei (5 out of 13 patents)

12. Kazuo Minegishi (5 out of 5 patents)

13. Hiroshi Shima (4 out of 5 patents)

14. Takuya Takashita (4 out of 21 patents)

15. Masami Ishijima (4 out of 10 patents)

Core Competencies:

Noise Filter

Solid Electrolytic Capacitor

Alloy Powder

Magnetic Core

Inductor

Soft Magnetic Powder

Composite Magnetic Material

Electric Current Sensor

Pyroelectric Infrared Sensor

Electromagnetic Interference Suppressor

Laminated Substrate

Power Conversion Apparatus

149 patents: Sort by Forward Citations

1. 12431853 - Noise filter (2025-09-30),

2. 12340953 - Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor with improved anode lead-out wire (2025-06-24),

3. 12338514 - Alloy powder, nanocrystalline powder and magnetic core (2025-06-24),

4. 12278060 - Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor comprising a block layer formed using a conductive polymer heterogeneously doped with a polymer dopant (2025-04-14),

5. 12275873 - Adhesive tape and tape roll (2025-04-14),

6. 12241915 - Electric current sensor (2025-03-04),

7. 12226830 - Composite magnetic material, electrical and electronic device, and method of manufacturing composite magnetic material (2025-02-18),

8. 12119163 - Inductor (2024-10-15),

9. 12090553 - Manufacturing method of alloy powder (2024-09-17),

10. 12033793 - Method of manufacturing magnetic member and the magnetic member (2024-07-09),

11. 12030122 - Method of manufacturing soft magnetic dust core (2024-07-09),

12. 11996224 - Method for manufacturing a powder core, the powder core and an inductor (2024-05-28),

13. 11911821 - Compressed powder body comprising soft magnetic alloy (2024-02-27),

14. 11908630 - Solid electrolytic capacitor using a doped conductive polymer (2024-02-20),

15. 11866810 - Alloy powder, nanocrystalline powder and magnetic core (2024-01-09),

TOKIN Corporation is a global electronics manufacturer specializing in passive components and wireless communication solutions. With over 50 years of experience, TOKIN has become a trusted name in the industry, providing high-quality products and innovative solutions to customers worldwide. Through cutting-edge technology and continuous R&D efforts, TOKIN strives to meet the evolving needs of various sectors, including automotive, telecommunications, consumer electronics, and industrial applications. Visit our website to learn more about our comprehensive range of products and solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

149 Patents

#2 in Miyagi

#835 in Japan

#5,331 in the World

Tokin Corporation

Forward Citations = 1,766

293 inventors:

Shigeyoshi Yoshida (16 out of 34 patents)

Akiri Urata (9 out of 14 patents)

Mitsuharu Sato (8 out of 13 patents)

4. Kenichi Chatani (7 out of 9 patents)

5. Katsunori Kumasaka (7 out of 9 patents)

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