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Hitachi Astemo Ltd.

USPTO Granted Patents = 1,198

CIPO Patents = 5

EPO Patents = 382

Trademarks = 61

Forward Citations = 324

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1,802 inventors (with patents filed for the assignee):

Hideyuki Sakamoto (44 out of 70 patents)

Ryusuke Hirao (22 out of 38 patents)

Toshiyuki Ajima (22 out of 47 patents)

4. Nobuyuki Ichimaru (19 out of 47 patents)

5. Takafumi Hara (19 out of 38 patents)

6. Hiroshi Nakano (18 out of 123 patents)

7. Mikio Yamashita (17 out of 42 patents)

8. Osamu Mukaihara (16 out of 35 patents)

9. Akira Uenodan (15 out of 46 patents)

10. Yosuke Murakami (15 out of 64 patents)

11. Kenichi Nakayama (15 out of 60 patents)

12. Akira Kuriyama (15 out of 37 patents)

13. Kazuyoshi Serizawa (14 out of 57 patents)

14. Yoichiro Kobayashi (14 out of 26 patents)

15. Takahiro Miki (13 out of 102 patents)

Core Competencies:

Damping Force Adjustment

Electric Power Steering

Synchronous Motor Driving

Vehicle Control System

Automatic Emergency Braking

In-Vehicle Camera Calibration

Object Sensing Device

Fuel Pump Technology

Electronic Control Unit

Variable Displacement Oil Pump

Shock Absorber Technology

Travel Road Recognition

1,198 patents: Sort by Forward Citations

1. 12495511 - Electronic control device (2025-12-09),

2. 12495510 - Electronic control device (2025-12-09),

3. 12492736 - Shock absorber (2025-12-09),

4. 12491855 - Electric parking brake device for vehicle (2025-12-09),

5. 12491847 - Vehicle control system, vehicle control device, and vehicle control method (2025-12-09),

6. 12491774 - Motor control device, electromechanical integrated unit, boost converter system, electric vehicle system, and motor control method (2025-12-09),

7. 12489328 - Rotary electric machine and electric drive system (2025-12-02),

8. 12488923 - Solenoid, damping force adjustment mechanism, and damping force adjustable shock absorber (2025-12-02),

9. 12487900 - Memory fault management for software (2025-12-02),

10. 12485956 - Electric power steering device (2025-12-02),

11. 12483169 - Synchronous motor driving device and synchronous motor driving method (2025-11-25),

12. 12481025 - Object sensing device and object sensing method (2025-11-25),

13. 12480465 - Fuel pump (2025-11-25),

14. 12479499 - Electric power steering apparatus, electric power steering apparatus control method, and steering control device (2025-11-25),

15. 12479442 - Travel road recognition device (2025-11-25),

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.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

1,198 Patents

#1 in Ibaraki

#186 in Japan

#817 in the World

Hitachi Astemo Ltd.

Forward Citations = 324

1,802 inventors:

Hideyuki Sakamoto (44 out of 70 patents)

Ryusuke Hirao (22 out of 38 patents)

Toshiyuki Ajima (22 out of 47 patents)

4. Nobuyuki Ichimaru (19 out of 47 patents)

5. Takafumi Hara (19 out of 38 patents)

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