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For the Inventor, By the Inventor

Kanagawa, Japan

Nikki Co., Ltd.


USPTO Granted Patents = 51

% Expired Patents = 35.3


Forward Citations = 224

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53 inventors (with patents filed for the assignee):

goldMedal Toshio Mikiya (10 out of 80 patents)

silverMedal Buso Takigawa (8 out of 8 patents)

bronzeMedal Umerujan Sawut (8 out of 8 patents)

4.  Tsutomu Murakami (7 out of 7 patents)

5.  Naoya Suenaga (5 out of 5 patents)

6.  Ryuichi Oguro (5 out of 5 patents)

7.  Haruki Nakao (4 out of 17 patents)

8.  Kuniaki Shibuya (4 out of 9 patents)

9.  Tohti Gheyret (4 out of 4 patents)

10.  Tomoaki Fukuoka (3 out of 3 patents)

11.  Teruyuki Wakabayashi (3 out of 3 patents)

12.  Yukinori Suematsu (3 out of 5 patents)

13.  Masashi Iwasaki (3 out of 5 patents)

14.  Shinya Yamaguchi (3 out of 3 patents)

15.  Shutaro Aizawa (3 out of 5 patents)


Core Competencies:
Electronic Throttle Control
Fuel Supply System
Fuel Injection Control
Engine Control Device
Air-Fuel Ratio Control
Inline Fuel Pump
Gas-Fuel-Supply Regulator
Oil Separator
Microcomputer Monitoring
Throttle Apparatus
Nozzle Device
Bubble Generator

51 patents:

1. 12523183 - Electronic throttle control method and electronic throttle control device (2026-01-13),
2. 12305603 - Fuel property determination device and vehicle (2025-05-20),
3. 12282345 - Electronically controlled regulator (2025-04-21),
4. 12270367 - Engine control device and vehicle (2025-04-08),
5. 11885277 - Method and device for controlling fuel injection to engine (2024-01-30),
6. 11761391 - Electronic control method for throttle and electronic control throttle device (2023-09-19),
7. 11739715 - Regulator (2023-08-29),
8. 11719171 - Electronic control method for throttle and electronic control throttle device (2023-08-08),
9. 11714436 - Regulator (2023-08-01),
10. 11137074 - Regulator (2021-10-05),
11. 10927769 - Electronically controlled throttle control device (2021-02-23),
12. 10871789 - Regulator (2020-12-22),
13. 10662882 - Fuel pressure monitoring system of vaporizer (2020-05-26),
14. 10655579 - Fuel supply system (2020-05-19),
15. 10120395 - Gas-fuel-supply regulator (2018-11-06),
Company Overview
Nikki Co., Ltd., based in Kanagawa, Japan, specializes in advanced engine control systems that enhance vehicle performance and efficiency. The company focuses on developing technologies such as electronic throttle control, fuel supply systems, and fuel injection control, which are essential for modern automotive engineering. With expertise in air-fuel ratio control and inline fuel pumps, Nikki plays a pivotal role in optimizing engine functionality and reducing emissions, contributing to the evolution of sustainable automotive solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

51 Patents

#62 in

#1,684 in

#13,776 in the World

Kanagawa, JP
Kanagawa, Japan

Nikki Co., Ltd.

Forward Citations = 224

53 inventors:

goldMedal Toshio Mikiya (10 out of 80 patents)

silverMedal Buso Takigawa (8 out of 8 patents)

bronzeMedal Umerujan Sawut (8 out of 8 patents)

4.  Tsutomu Murakami (7 out of 7 patents)

5.  Naoya Suenaga (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nikki Co., Ltd.. Retrieved from https://idiyas.com/company/nikki-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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