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For the Inventor, By the Inventor

Nishio, Japan

Nippon Soken, Inc.

USPTO Granted Patents = 1,600

% Expired Patents = 19.8



Forward Citations = 20,342

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1,495 inventors (with patents filed for the assignee):

goldMedal Tadashi Hattori (166 out of 224 patents)

silverMedal Hisasi Kawai (122 out of 126 patents)

bronzeMedal Toshihiko Igashira (78 out of 91 patents)

4.  Tokio Kohama (76 out of 87 patents)

5.  Mitsuo Inagaki (74 out of 84 patents)

6.  Hiroaki Yamaguchi (50 out of 59 patents)

7.  Akira Kuno (49 out of 55 patents)

8.  Yasuyuki Sakakibara (47 out of 48 patents)

9.  Hideki Obayashi (46 out of 52 patents)

10.  Taro Tanaka (43 out of 45 patents)

11.  Hideaki Sasaya (42 out of 43 patents)

12.  Shigeyuki Akita (41 out of 45 patents)

13.  Kenji Takeda (39 out of 46 patents)

14.  Toshikazu Ina (37 out of 38 patents)

15.  Satosi Kuwakado (36 out of 37 patents)


Core Competencies:
Power Converter
Electric Power Transmission
Ultrasonic Object Detection
Solenoid Device
Valve Timing Controller
Vehicle Power Transmission
Gas Sensor
High Pressure Pump
Smart System
Diagnostic Device
Relay System
Communication System

1,600 patents:

1. 10891738 - Boundary line recognition apparatus and branch road determination apparatus (2021-01-12),
2. 10371805 - Ultrasonic object detection apparatus (2019-08-06),
3. 10332399 - Object detection apparatus (2019-06-25),
4. 10242787 - Solenoid device and solenoid system (2019-03-26),
5. 10180462 - Diagnostic device (2019-01-15),
6. 10170938 - Electric power receiving device and electric power transmission device (2019-01-01),
7. 10156633 - Sensor system, control device, and sensor (2018-12-18),
8. 10141145 - Relay apparatus having plurality of relays and relay system incorporating the relay apparatus (2018-11-27),
9. 10116182 - Electric motor storing device for hybrid vehicle (2018-10-30),
10. 10076068 - Electric power convertor (2018-09-11),
11. 10060305 - Variable valve timing apparatus (2018-08-28),
12. 10038459 - Network control device (2018-07-31),
13. 10002433 - Boundary line recognition apparatus and branch road determination apparatus (2018-06-19),
14. 9967526 - Image processing device and storage medium (2018-05-08),
15. 9960001 - Relay system (2018-05-01),
Company Overview
Nippon Soken, Inc., headquartered in Nishio, Japan, specializes in power conversion technology, focusing on the development and manufacturing of advanced power converters and electric power transmission systems. The company is also engaged in innovative solutions such as ultrasonic object detection, solenoid devices, and valve timing controllers, contributing to the automotive and industrial sectors. Additionally, Nippon Soken works on gas sensors and high-pressure pumps, enhancing efficiency and performance in various applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

1,600 Patents

#1 in Nishio

#147 in Japan

#628 in the World

Nishio, JP
Nishio, Japan

Nippon Soken, Inc.

Forward Citations = 20,342

1,495 inventors:

goldMedal Tadashi Hattori (166 out of 224 patents)

silverMedal Hisasi Kawai (122 out of 126 patents)

bronzeMedal Toshihiko Igashira (78 out of 91 patents)

4.  Tokio Kohama (76 out of 87 patents)

5.  Mitsuo Inagaki (74 out of 84 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Soken, Inc.. Retrieved from https://idiyas.com/company/nippon-soken

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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