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Hitachinaka-shi, Japan

Hitachi Car Engineering Co., Ltd.

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USPTO Granted Patents = 248

% Expired Patents = 34.7

EPO Patents = 47

Forward Citations = 2,334

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350 inventors (with patents filed for the assignee):

Shinya Igarashi (36 out of 72 patents)

Izumi Watanabe (34 out of 62 patents)

Keiichi Nakada (25 out of 45 patents)

4. Suetaro Shibukawa (21 out of 46 patents)

5. Fumio Tajima (20 out of 85 patents)

6. Osamu Koizumi (19 out of 52 patents)

7. Shouichi Kawamata (18 out of 38 patents)

8. Keiji Hanzawa (16 out of 115 patents)

9. Junichi Horie (16 out of 33 patents)

10. Masamichi Yamada (16 out of 119 patents)

11. Keiji Oda (16 out of 30 patents)

12. Masahiro Matsumoto (15 out of 142 patents)

13. Kei Ueyama (15 out of 19 patents)

14. Hiromu Kikawa (14 out of 21 patents)

15. Hiroyuki Saito (13 out of 44 patents)

Core Competencies:

Permanent Magnet Motor

Torque Controller

Flow Measurement

Fuel Supply Pump

Synchronous Motor

Pressure Sensor

Vehicle Drive Device

Thermal Flow Meter

Electric Drive Device

Throttle Control

Semiconductor Converter

Gas Flow Measurement

248 patents: Sort by Forward Citations

1. 8766575 - Synchronous electric motor drive system (2014-07-01),

2. 8305019 - Torque controller for permanent magnet synchronous motor (2012-11-06),

3. 8302275 - Iron core and method of manufacturing the same and apparatus for manufacturing the same (2012-11-06),

4. 8242587 - Electronic device and pressure sensor (2012-08-14),

5. 8198775 - Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine (2012-06-12),

6. 8106619 - Position sensorless controller for permanent magnet motor (2012-01-31),

7. RE42940 - Air flow rate control apparatus (2011-11-21),

8. RE42529 - Thermal flow rate measuring device (2011-07-11),

9. 7956506 - Driving apparatus (2011-06-07),

10. 7919941 - Semiconductor power converter (2011-04-05),

11. 7851959 - Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine (2010-12-14),

12. 7847462 - Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine (2010-12-07),

13. 7821223 - Vector controller for a permanent magnet motor and inverter module (2010-10-26),

14. 7808144 - Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine (2010-10-05),

15. 7752908 - Equipment for measuring gas flow rate having an adjacent external surface protrusion (2010-07-13),

Company Overview

Hitachi Car Engineering Co., Ltd., based in Hitachinaka-shi, Japan, specializes in the development and manufacturing of advanced electric motor control technologies. The company focuses on core areas such as permanent magnet motors, torque controllers, and vehicle drive devices, contributing to the evolution of automotive engineering. Their expertise extends to flow measurement, fuel supply pumps, synchronous motors, pressure sensors, and thermal flow meters, positioning them as a key player in the automotive sector's technological advancements.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

248 Patents

#1 in Hitachinaka-shi

#613 in Japan

#3,509 in the World

Hitachinaka-shi, Japan

Hitachi Car Engineering Co., Ltd.

Forward Citations = 2,334

350 inventors:

Shinya Igarashi (36 out of 72 patents)

Izumi Watanabe (34 out of 62 patents)

Keiichi Nakada (25 out of 45 patents)

4. Suetaro Shibukawa (21 out of 46 patents)

5. Fumio Tajima (20 out of 85 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Car Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/hitachi-car-engineering-company

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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