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Kyosan Denki Co., Ltd.

USPTO Granted Patents = 84

CIPO Patents = 1

EPO Patents = 6

Forward Citations = 418

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111 inventors (with patents filed for the assignee):

Hironobu Oki (12 out of 12 patents)

Tetsuro Okazono (10 out of 22 patents)

Akinari Sugiyama (9 out of 9 patents)

4. Nobuharu Muto (9 out of 9 patents)

5. Akihiro Ishitoya (8 out of 8 patents)

6. Hiroshi Shimamura (7 out of 7 patents)

7. Tetsuya Takahashi (6 out of 6 patents)

8. Masakazu Suzuki (5 out of 5 patents)

9. Hideto Takahashi (5 out of 13 patents)

10. Keiji Suzuki (5 out of 5 patents)

11. Hiroya Tagami (5 out of 5 patents)

12. Norikazu Sugimura (5 out of 5 patents)

13. Hiroshi Osaki (4 out of 4 patents)

14. Hiroshi Ohsaki (4 out of 4 patents)

15. Norihiro Hayashi (3 out of 29 patents)

Core Competencies:

Fuel Tank

Control Valve

Filter Device

Fuel Supply Apparatus

Vapor Control System

Suction Filter

Fuel Return Device

Fuel Shutoff Valve

Diesel Filter

Ventilation Control Valve

Fuel Vapor Processing

Metal-Resin Molded Product

84 patents: Sort by Forward Citations

1. 12263730 - Control valve for fuel tank (2025-04-01),

2. 11938429 - Filter device and method of manufacturing the filter device (2024-03-26),

3. 11511620 - Ventilation control valve for fuel tank (2022-11-29),

4. 11186166 - Fuel tank ventilation valve (2021-11-30),

5. 11112020 - Fuel control valve (2021-09-07),

6. 11097611 - Vent control valve for fuel tank (2021-08-24),

7. 10967733 - Fuel shutoff valve (2021-04-06),

8. 10890146 - Fuel supply apparatus (2021-01-12),

9. 10670161 - Vent control valve for fuel tank (2020-06-02),

10. 10578063 - Relief valve and fuel supplying system (2020-03-03),

11. 10525821 - Vent control valve for fuel tank (2020-01-07),

12. 10473065 - Fuel return device (2019-11-12),

13. 10443552 - Fuel supply device (2019-10-15),

14. 10145342 - Fuel supply device (2018-12-04),

15. 10094344 - Fuel supply device (2018-10-09),

Kyosan Denki Co., Ltd. is a company based in Japan that specializes in the manufacturing and development of various electrical equipment. With a rich history dating back to its founding in 1939, Kyosan Denki has grown to become a leading provider of innovative solutions in fields such as railway systems, power generation, energy storage, and more. Committed to technological excellence and customer satisfaction, the company strives to contribute to the advancement of society through its reliable and cutting-edge products.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

84 Patents

#1 in Koga

#1,238 in Japan

#8,818 in the World

Kyosan Denki Co., Ltd.

Forward Citations = 418

111 inventors:

Hironobu Oki (12 out of 12 patents)

Tetsuro Okazono (10 out of 22 patents)

Akinari Sugiyama (9 out of 9 patents)

4. Nobuharu Muto (9 out of 9 patents)

5. Akihiro Ishitoya (8 out of 8 patents)

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