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Hitachi Vehicle Energy, Ltd.

USPTO Granted Patents = 69

EPO Patents = 18

Forward Citations = 733

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95 inventors (with patents filed for the assignee):

Akihiko Emori (25 out of 85 patents)

Akihiko Kudo (21 out of 78 patents)

Youhei Kawahara (16 out of 33 patents)

4. Mutsumi Kikuchi (12 out of 65 patents)

5. Yoshinori Aoshima (10 out of 29 patents)

6. Tatsumi Yamauchi (8 out of 73 patents)

7. Kinya Aota (8 out of 66 patents)

8. Kei Sakabe (6 out of 25 patents)

9. Takenori Ishizu (6 out of 7 patents)

10. Kenji Kubo (6 out of 33 patents)

11. Shuko Yamauchi (6 out of 11 patents)

12. Tunemi Aiba (5 out of 5 patents)

13. Hirotaka Takahashi (4 out of 28 patents)

14. Takuro Tsunaki (4 out of 16 patents)

15. Kouichi Kajiwara (4 out of 9 patents)

Core Competencies:

Battery Control Circuit

Secondary Battery

Electric Storage Device

Battery Monitoring System

Lithium-Ion Secondary Battery

Vehicle Battery Control System

Battery Storage System

Cell Controller

Automotive Power Supply System

Battery Module

Ground Fault Detection Circuit

Battery Information Management System

69 patents: Sort by Forward Citations

1. 9362759 - Battery control circuit and battery device (2016-06-07),

2. 8829717 - Battery control device and battery system (2014-09-09),

3. 8822055 - Secondary battery (2014-09-02),

4. 8798832 - Electric storage device (2014-08-05),

5. 8791702 - Ground fault detection circuit, and power supply device (2014-07-29),

6. 8760168 - Assembled battery total voltage detection circuit (2014-06-24),

7. 8753760 - Secondary battery with gas release valve (2014-06-17),

8. 8741472 - Electric storage device (2014-06-03),

9. 8736229 - Battery control circuit for reducing power consumption (2014-05-27),

10. 8723527 - Battery monitoring system (2014-05-13),

11. 8685556 - Electricity storage module (2014-04-01),

12. 8673470 - Secondary cell (2014-03-18),

13. 8649935 - Battery system for vehicle, on-vehicle battery module, and cell controller (2014-02-11),

14. 8616311 - Electrical storage device (2013-12-31),

15. 8605450 - In-vehicle electric storage device (2013-12-10),

Hitachi Vehicle Energy, Ltd. is a subsidiary of Hitachi, Ltd. specializing in the development and production of lithium-ion batteries for electric vehicles (EVs) and hybrid electric vehicles (HEVs). With advanced technologies and extensive experience, the company is committed to contributing to a sustainable society by providing high-performance and reliable energy storage solutions. Visit their website for more information.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

69 Patents

#7 in Ibaraki

#1,388 in Japan

#10,482 in the World

Hitachi Vehicle Energy, Ltd.

Forward Citations = 733

95 inventors:

Akihiko Emori (25 out of 85 patents)

Akihiko Kudo (21 out of 78 patents)

Youhei Kawahara (16 out of 33 patents)

4. Mutsumi Kikuchi (12 out of 65 patents)

5. Yoshinori Aoshima (10 out of 29 patents)

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