For the Inventor, By the Inventor

Enter assignee name

Kanagawa, Japan

Tokyo Roki Co., Ltd.

USPTO Granted Patents = 38

EPO Patents = 32

Forward Citations = 271

Loading Chart...

Loading Chart...

87 inventors (with patents filed for the assignee):

Kosaku Ishida (12 out of 12 patents)

Yoshitaka Watanabe (5 out of 10 patents)

Isamu Kanaya (5 out of 6 patents)

4. Takatsugu Kurosawa (4 out of 4 patents)

5. Takayuki Mori (3 out of 5 patents)

6. Tatsuhito Yamada (3 out of 3 patents)

7. Kiminobu Hirata (3 out of 20 patents)

8. Daisuke Shirai (3 out of 4 patents)

9. Hitoshi Hiramoto (3 out of 4 patents)

10. Shigeru Yasaki (3 out of 3 patents)

11. Yasutaka Yoshino (3 out of 3 patents)

12. Tomoaki Fukuoka (2 out of 3 patents)

13. Tsuyoshi Yao (2 out of 3 patents)

14. Tadashi Ichikawa (2 out of 4 patents)

15. Yoshinori Maehira (2 out of 2 patents)

38 patents: Sort by Forward Citations

1. 12312988 - Exhaust purification apparatus (2025-05-27),

2. 12116921 - Mixing device (2024-10-15),

3. 11401850 - Exhaust gas purification catalyst (2022-08-02),

4. 10953410 - Separation disk and oil separator (2021-03-23),

5. 10913076 - Oil separator (2021-02-09),

6. 10767605 - Heat exchanger (2020-09-08),

7. 10569206 - Oil separator (2020-02-25),

8. 10519827 - Oil mist filter and oil separator (2019-12-31),

9. 10513955 - Oil separator (2019-12-24),

10. 10512864 - Oil separator (2019-12-24),

11. 10450916 - Plasma reactor (2019-10-22),

12. 10322362 - Oil separator (2019-06-18),

13. 10226725 - Oil mist separation method and oil separator (2019-03-12),

14. 9987579 - Oil separator (2018-06-05),

15. 9677507 - Oil separator (2017-06-13),

Established in 1938, TOKYO ROKI CO., LTD. is a Japanese company specializing in the manufacturing and development of automotive components. With a strong commitment to quality and innovation, TOKYO ROKI has become a trusted supplier to major automobile manufacturers globally. Their product range includes fuel management systems, engine valves, oil pumps, and various other precision components. Through continuous research and development, TOKYO ROKI aims to contribute to the improvement of automotive performance, efficiency, and environmental sustainability.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

38 Patents

#66 in Kanagawa

#1,982 in Japan

#17,311 in the World

Kanagawa, Japan

Tokyo Roki Co., Ltd.

Forward Citations = 271

87 inventors:

Kosaku Ishida (12 out of 12 patents)

Yoshitaka Watanabe (5 out of 10 patents)

Isamu Kanaya (5 out of 6 patents)

4. Takatsugu Kurosawa (4 out of 4 patents)

5. Takayuki Mori (3 out of 5 patents)

Please report any incorrect information to support@idiyas.com

Loading…