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Tokuden Co., Ltd.

Calculating rank

USPTO Granted Patents = 36

% Expired Patents = 19.4

CIPO Patents = 2

EPO Patents = 25

Trademarks = 2

Forward Citations = 75

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20 inventors (with patents filed for the assignee):

Toru Tonomura (25 out of 25 patents)

Yasuhiro Fujimoto (18 out of 22 patents)

Kozo Okamoto (10 out of 11 patents)

4. Yoshio Kitano (9 out of 9 patents)

5. Sachio Tamaki (5 out of 5 patents)

6. Takatsugu Kitano (5 out of 5 patents)

7. Masayoshi Kimura (4 out of 4 patents)

8. Yoshihiko Yamamura (2 out of 2 patents)

9. Shigeyuki Hirota (2 out of 2 patents)

10. Masanobu Heguri (2 out of 2 patents)

11. Toshiki Hanafusa (2 out of 2 patents)

12. Yukio Horie (2 out of 2 patents)

13. Osamichi Matsukawa (1 out of 1 patent)

14. Mamoru Watanabe (1 out of 1 patent)

15. Kiyohiro Yamamori (1 out of 1 patent)

Core Competencies:

Induction Heating

Superheated Steam Generator

Thermal Processing

Roll Apparatus

Power Circuit

Fluid Heating

Transformer

Induction Heating System

Heating Device

Induction Heat Generation

Metallic Body Heating

Melt Spinning

36 patents: Sort by Forward Citations

1. 12363804 - Induction heated roll apparatus (2025-07-15),

2. 11818825 - Induction heated roll apparatus (2023-11-14),

3. 11812537 - Induction heated roll apparatus (2023-11-07),

4. 11333351 - Superheated steam generator (2022-05-17),

5. 10999900 - Induction heated roll apparatus (2021-05-04),

6. 10978243 - Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator (2021-04-13),

7. 10840011 - Power circuit, iron core for scott connected transformer, scott connected transformer, and superheated steam generator (2020-11-17),

8. 10779364 - Induction heated roll apparatus (2020-09-15),

9. 10650962 - Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator (2020-05-12),

10. 10510480 - Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator (2019-12-17),

11. 10352554 - Superheated steam generator (2019-07-16),

12. 10337725 - Superheated steam generator (2019-07-02),

13. 10314117 - Induction heating system (2019-06-04),

14. 10212764 - Induction heated roll apparatus (2019-02-19),

15. 10206249 - Fluid heating device (2019-02-12),

Company Overview

Tokuden Co., Ltd., based in Kyoto, Japan, specializes in the development and manufacturing of advanced electromagnetic devices and systems. The company is recognized for its expertise in induction heating technology, which is widely applied in various industries including automotive, electronics, and metal processing. Tokuden is committed to innovation and quality, focusing on enhancing efficiency and performance in industrial applications through its cutting-edge technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

36 Patents

#75 in Kyoto 615-0031

#2,100 in Japan

#18,739 in the World

Tokuden Co., Ltd.

Forward Citations = 75

20 inventors:

Toru Tonomura (25 out of 25 patents)

Yasuhiro Fujimoto (18 out of 22 patents)

Kozo Okamoto (10 out of 11 patents)

4. Yoshio Kitano (9 out of 9 patents)

5. Sachio Tamaki (5 out of 5 patents)

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

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