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Forward Citations = 40

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10 inventors (with patents filed for the assignee):

Hiromichi Komai (7 out of 18 patents)

Kenichiro Ishikura (4 out of 17 patents)

Hidekazu Aoki (4 out of 9 patents)

4. Yasushi Akita (3 out of 9 patents)

5. Yasutomo Mabe (2 out of 11 patents)

6. Kenichi Sugiyama (2 out of 6 patents)

7. Keigo Yoshida (2 out of 4 patents)

8. Kazuya Matsumoto (2 out of 2 patents)

9. Takahiro Kuroha (2 out of 3 patents)

10. Masashi Kubo (1 out of 3 patents)

10 patents: Sort by Forward Citations

1. 10767705 - Propeller shaft (2020-09-08),

2. 10378591 - Propeller shaft and yoke structure of universal joint used for the propeller shaft (2019-08-13),

3. 10240641 - Power transmission shaft and propeller shaft for vehicle (2019-03-26),

4. 9850959 - Propeller shaft and yoke structure of universal joint used for the propeller shaft (2017-12-26),

5. 9605716 - Propeller shaft and yoke structure of universal joint used for the propeller shaft (2017-03-28),

6. 9364918 - Aluminum alloy propeller shaft and friction welding process thereof (2016-06-14),

7. 9334904 - Propeller shaft and yoke structure of universal joint used for the propeller shaft (2016-05-10),

8. 9005039 - Aluminum alloy propeller shaft and friction welding process thereof (2015-04-14),

9. 8864591 - Propeller shaft and constant velocity universal joint used therein (2014-10-21),

10. 8864590 - Propeller shaft and constant velocity universal joint used therein (2014-10-21),

HITACHI AUTOMOTIVE SYSTEMS KYUSHU, LTD. is a subsidiary of Hitachi Automotive Systems, Ltd. They specialize in the manufacturing and development of automotive systems and components. With a focus on powertrain systems, chassis systems, and advanced driver assistance systems, they contribute to the growth and advancement of the automotive industry.

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Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

10 Patents

#26 in Fukuoka

#4,285 in Japan

#54,287 in the World

Fukuoka, Japan

Hitachi Automotive Systems Kyushu, Ltd.