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For the Inventor, By the Inventor

Atsugi, Japan

Unisia Jecs Corporation


USPTO Granted Patents = 556

% Expired Patents = 9.9


Trademarks = 1

Forward Citations = 6,404

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375 inventors (with patents filed for the assignee):

goldMedal Naoki Tomisawa (44 out of 45 patents)

silverMedal Seinosuke Hara (34 out of 77 patents)

bronzeMedal Kenichi Machida (31 out of 78 patents)

4.  Satoru Watanabe (22 out of 65 patents)

5.  Mitsuo Sasaki (19 out of 32 patents)

6.  Akira Uchikawa (18 out of 21 patents)

7.  Hajime Hosoya (17 out of 37 patents)

8.  Shigeo Ohkuma (17 out of 25 patents)

9.  Hirokazu Shimizu (15 out of 37 patents)

10.  Masuo Kashiwabara (15 out of 25 patents)

11.  Makoto Nakamura (14 out of 134 patents)

12.  Yoshihiko Yamada (14 out of 40 patents)

13.  Masato Kumagai (14 out of 23 patents)

14.  Hisatomo Ohki (13 out of 24 patents)

15.  Nobuyuki Ohtsu (13 out of 23 patents)


Core Competencies:
Fuel Injection
Valve Timing Control
Anti-Skid System
Hydraulic Pump
Oil Pressure Control
Combustion Control
Transmission System
Air-Fuel Ratio
Cylinder Discrimination
Torque Sensor
Power Steering

556 patents:

1. 7204433 - Method of manufacturing a fuel injection valve (2007-04-17),
2. 6905530 - Metallic powder-molded body, re-compacted body of the molded body, sintered body produced from the re-compacted body, and processes for production thereof (2005-06-14),
3. 6868812 - Valve timing control system for internal combustion engine (2005-03-22),
4. 6863037 - Control unit for variable valve timing mechanism (2005-03-08),
5. 6848404 - Oil pressure control apparatus for an internal combustion engine (2005-02-01),
6. 6837694 - Hydraulic pump unit with orifice plate for vehicle brake control system (2005-01-04),
7. 6832585 - Valve timing controller of internal combustion engine (2004-12-21),
8. 6821408 - Method and apparatus for an anodic treatment (2004-11-23),
9. 6820024 - System and method for calibrating control unit (2004-11-16),
10. 6814851 - Method and apparatus for an anodic treatment (2004-11-09),
11. 6814311 - Fuel injection valve (2004-11-09),
12. 6811104 - Fuel injection valve (2004-11-02),
13. 6805309 - Fuel injector and method of manufacturing the same (2004-10-19),
14. 6805106 - Fuel-injection system (2004-10-19),
15. 6805096 - Cylinder judgment apparatus and cylinder judgment method of engine (2004-10-19),
Company Overview
Unisia Jecs Corporation, headquartered in Atsugi, Japan, specializes in the development and manufacturing of advanced components for internal combustion engines. The company focuses on critical technologies such as fuel injection systems, valve timing control, and combustion control, contributing to enhanced engine performance and efficiency. Additionally, Unisia Jecs is involved in the design of hydraulic pumps, oil pressure control systems, and anti-skid systems, positioning itself as a key player in automotive engineering and innovation.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

556 Patents

#2 in Atsugi

#358 in Japan

#1,751 in the World

Atsugi, JP
Atsugi, Japan

Unisia Jecs Corporation

Forward Citations = 6,404

375 inventors:

goldMedal Naoki Tomisawa (44 out of 45 patents)

silverMedal Seinosuke Hara (34 out of 77 patents)

bronzeMedal Kenichi Machida (31 out of 78 patents)

4.  Satoru Watanabe (22 out of 65 patents)

5.  Mitsuo Sasaki (19 out of 32 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Unisia Jecs Corporation. Retrieved from https://idiyas.com/company/unisia-jecs

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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