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Tokin Corporation

USPTO Granted Patents = 162

% Expired Patents = 4.3

EPO Patents = 8

Trademarks = 9

Forward Citations = 1,800

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275 inventors (with patents filed for the assignee):

Shigeyoshi Yoshida (16 out of 36 patents)

Akiri Urata (10 out of 15 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. Yasuhisa Sugawara (6 out of 20 patents)

9. Yuichi Tokano (6 out of 6 patents)

10. Teruhiko Fujiwara (5 out of 23 patents)

11. Masami Ishijima (5 out of 11 patents)

12. Koichi Kondo (5 out of 13 patents)

13. Koji Kamei (5 out of 13 patents)

14. Kazuo Minegishi (5 out of 5 patents)

15. Masakazu Abe (5 out of 6 patents)

Core Competencies:

Solid-Electrolytic Capacitor

Electric Double-Layer Capacitor

Noise Filter

Magnetic Core

Pyroelectric Infrared Sensor

Inductor

Composite Magnetic Material

Soft Magnetic Powder

Electromagnetic Interference

Manufacturing Method

Alloy Powder

Vibration Actuator

162 patents: Sort by Forward Citations

1. D1151256 - Current sensor assembly (2026-10-06),

2. 12695193 - Antenna module (2026-07-28),

3. 12695025 - Reactor (2026-07-28),

4. 12688958 - Rare-earth cobalt permanent magnet, manufacturing method therefor, and device (2026-07-21),

5. 12640293 - MnZn-based ferrite and method for producing same (2026-05-26),

6. 12630477 - MnZn-based ferrite (2026-05-19),

7. 12614678 - Solid-electrolytic capacitor and method for manufacturing solid-electrolytic capacitor (2026-04-28),

8. 12609232 - Magnetic core housing and noise reduction device (2026-04-21),

9. 12609222 - Rare-earth cobalt permanent magnet, method of manufacturing the same, and device (2026-04-21),

10. 12573566 - Electric double-layer capacitor and its manufacturing method using an aqueous electrolytic solution (2026-03-10),

11. 12567538 - Method of manufacturing a dust core and the dust core (2026-03-03),

12. 12567535 - Magnetic sheet (2026-03-03),

13. 12529605 - Pyroelectric infrared sensor and electronic device comprising pyroelectric infrared sensor (2026-01-20),

14. 12431853 - Noise filter (2025-09-30),

15. 12340953 - Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor with improved anode lead-out wire (2025-06-24),

Company Overview

Tokin Corporation, headquartered in Miyagi, Japan, specializes in the development and manufacturing of advanced electrolytic capacitors. The company focuses on various core technologies, including solid-electrolytic capacitors and electric double-layer capacitors, which are essential for energy storage and power management applications. Additionally, Tokin is involved in producing noise filters, magnetic cores, and pyroelectric infrared sensors, contributing to innovations in electronic components and materials, particularly in the fields of consumer electronics and industrial applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

162 Patents

#2 in Miyagi

#818 in Japan

#5,101 in the World

Tokin Corporation

Forward Citations = 1,800

275 inventors:

Shigeyoshi Yoshida (16 out of 36 patents)

Akiri Urata (10 out of 15 patents)

Mitsuharu Sato (8 out of 13 patents)

4. Kenichi Chatani (7 out of 9 patents)

5. Katsunori Kumasaka (7 out of 9 patents)

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

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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