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For the Inventor, By the Inventor

Ibaraki, Japan

Hitachi Automotive Systems, Ltd.

Calculating rank
USPTO Granted Patents = 2,028

% Expired Patents = 21.4


Trademarks = 4

Forward Citations = 5,697

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1,639 inventors (with patents filed for the assignee):

goldMedal Keiji Hanzawa (74 out of 115 patents)

silverMedal Shinobu Tashiro (61 out of 63 patents)

bronzeMedal Takeshi Morino (48 out of 68 patents)

4.  Masahiro Matsumoto (43 out of 142 patents)

5.  Noboru Tokuyasu (43 out of 92 patents)

6.  Hiroshi Nakano (42 out of 128 patents)

7.  Motoyuki Abe (40 out of 66 patents)

8.  Akihiko Kudo (39 out of 78 patents)

9.  Satoshi Usui (36 out of 59 patents)

10.  Kenichi Nakayama (34 out of 61 patents)

11.  Ryo Kusakabe (34 out of 37 patents)

12.  Mutsumi Kikuchi (33 out of 66 patents)

13.  Takayuki Yogo (33 out of 48 patents)

14.  Akira Uenodan (31 out of 46 patents)

15.  Hiroaki Hoshika (31 out of 46 patents)


Core Competencies:
Vehicle Control
Fuel Injection
Motion Control
Sensor Device
Electronic Control
Power Conversion
Internal Combustion Engine
Parking Assistance
Battery Monitoring
Flow Control
Imaging Device
Road Detection

2,028 patents:

1. 12237733 - Coil forming device and coil of a rotating electric device (2025-02-25),
2. 11935307 - Vehicle control apparatus (2024-03-19),
3. 11798749 - Power converter including filter circuit device to improve a noise suppression function (2023-10-24),
4. 11661994 - Manufacturing method for cylinder device (2023-05-30),
5. 11502581 - Motor unit (2022-11-15),
6. 11391226 - Internal combustion engine control device and internal combustion engine control method (2022-07-19),
7. 11371415 - Flow control valve and cooling system (2022-06-28),
8. 11302854 - Sensor device (2022-04-12),
9. 11296613 - Power conversion device (2022-04-05),
10. 11275875 - Co-simulation repeater with former trace data (2022-03-15),
11. 11268920 - Physical quantity detection device (2022-03-08),
12. 11262266 - Pressure sensor (2022-03-01),
13. 11249139 - Battery monitoring system (2022-02-15),
14. 11239735 - Motor unit and motor unit manufacturing method (2022-02-01),
15. 11236697 - Fuel injection control device and fuel injection control method (2022-02-01),
Company Overview
Hitachi Automotive Systems, Ltd. is a prominent player in the automotive technology sector, specializing in advanced vehicle control systems. The company focuses on developing innovative solutions in areas such as fuel injection, motion control, and electronic control systems. With a commitment to enhancing vehicle performance and safety, Hitachi Automotive Systems also works on sensor devices and power conversion technologies. Headquartered in Ibaraki, Japan, the company plays a significant role in the evolution of automotive engineering and intelligent driving solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Hitachi Automotive Systems, Ltd. USPTO Patent Assignee Logo
2,028 Patents

#2 in Ibaraki

#119 in Japan

#502 in the World

Ibaraki, JP
Ibaraki, Japan

Hitachi Automotive Systems, Ltd.

Forward Citations = 5,697

1,639 inventors:

goldMedal Keiji Hanzawa (74 out of 115 patents)

silverMedal Shinobu Tashiro (61 out of 63 patents)

bronzeMedal Takeshi Morino (48 out of 68 patents)

4.  Masahiro Matsumoto (43 out of 142 patents)

5.  Noboru Tokuyasu (43 out of 92 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Automotive Systems, Ltd.. Retrieved from https://idiyas.com/company/hitachi-automotive-systems

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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