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For the Inventor, By the Inventor

Hitachinaka, Japan

Hitachi Astemo Ltd.


USPTO Granted Patents = 1,472

% Expired Patents = 0.48


Trademarks = 33

Forward Citations = 481

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1,520 inventors (with patents filed for the assignee):

goldMedal Hideyuki Sakamoto (49 out of 75 patents)

silverMedal Ryusuke Hirao (26 out of 42 patents)

bronzeMedal Toshiyuki Ajima (25 out of 50 patents)

4.  Takafumi Hara (23 out of 43 patents)

5.  Hiroshi Nakano (21 out of 126 patents)

6.  Nobuyuki Ichimaru (19 out of 47 patents)

7.  Shigehisa Aoyagi (19 out of 39 patents)

8.  Mikio Yamashita (19 out of 44 patents)

9.  Masashi Seimiya (17 out of 28 patents)

10.  Katsuhiro Hoshino (17 out of 29 patents)

11.  Kazuyoshi Serizawa (17 out of 60 patents)

12.  Osamu Mukaihara (16 out of 35 patents)

13.  Kenichi Nakayama (16 out of 61 patents)

14.  Nobuyoshi Morita (16 out of 28 patents)

15.  Tatsuhiko Monji (16 out of 66 patents)


Core Competencies:
Shock Absorber
Electric Vehicle Control
Driving Assistance
Power Conversion
Synchronous Machine
Blind Spot Monitoring
Electronic Control Device
Inverter Control
Vehicle Charging
Heat Exchange Device
Visual Inspection
Autonomous Driving

1,472 patents:

1. 12738926 - Electronic control unit and gate driving method of power semiconductor element (2026-09-15),
2. 12738780 - Rotating electric machine (2026-09-15),
3. 12737874 - Visual inspection apparatus, visual inspection method, image generation apparatus, and image generation method (2026-09-15),
4. D1146385 - Module for automobile (2026-09-08),
5. 12733490 - Electronic control device (2026-09-08),
6. 12731274 - External environment recognition device (2026-09-08),
7. 12729741 - Shock absorber (2026-09-08),
8. 12728920 - Driving assistance device (2026-09-08),
9. 12728896 - Vehicle control device and vehicle control system (2026-09-08),
10. 12728688 - Sensor abnormality detection device (2026-09-08),
11. 12726187 - Signal transmission device and signal transmission system (2026-09-01),
12. 12722656 - Vehicle control device and electronic control system (2026-09-01),
13. 12722616 - Electric parking brake device (2026-09-01),
14. 12718693 - Computation device and lane forming method (2026-08-25),
15. 12717544 - Computing device, recognition device, and control device (2026-08-25),
HITACHI ASTEMO LTD. is a global manufacturing company specializing in automotive systems and components. With a focus on innovation and sustainability, the company provides a wide range of products such as electric powertrain systems, mobility solutions, and advanced electronics. Through advanced technologies and engineering expertise, HITACHI ASTEMO delivers high-quality solutions to meet the evolving demands of the automotive industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Hitachi Astemo Ltd.
1,472 Patents

#1 in Hitachinaka

#154 in Japan

#665 in the World

Hitachinaka, JP
Hitachinaka, Japan

Hitachi Astemo Ltd.

Forward Citations = 481

1,520 inventors:

goldMedal Hideyuki Sakamoto (49 out of 75 patents)

silverMedal Ryusuke Hirao (26 out of 42 patents)

bronzeMedal Toshiyuki Ajima (25 out of 50 patents)

4.  Takafumi Hara (23 out of 43 patents)

5.  Hiroshi Nakano (21 out of 126 patents)

Please report any incorrect information to [email protected]
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