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For the Inventor, By the Inventor

Susono, Japan

Yuji Takeda

This inventor holds 10 USPTO granted patents. Top assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippon Soken, Inc., Nippondenso Co., Ltd.. Active years: 1978-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuji Takeda. Retrieved from https://idiyas.com/inventor/yuji-takeda-0kt9aoqq

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

Calculating rank
USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 7

Forward Citations = 132(Granted Patents)


Location History:

  • Susono, JP (1978 - 1980)
  • Shizuoka, JP (1981 - 1983)

Company Filing History:

goldMedal10 out of 1,838 
 
Toyota Jidosha Kogyo Kabushiki Kaisha
 patents
silverMedal2 out of 1,600 
 
Nippon Soken, Inc.
 patents
bronzeMedal1 out of 3,252 
 
Nippondenso Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1978-1983

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10 patents (USPTO):Explore Patents
1. 4378771 - System for controlling ignition timing in an engine (1983-04-05),
2. 4320729 - System for controlling ignition timing in engine (1982-03-23),
3. 4275692 - System for controlling ignition timings in engine (1981-06-30),
4. 4257364 - Method and system for controlling ignition timing (1981-03-24),
5. 4225802 - Piezoelectric knocking detector for internal combustion engine (1980-09-30),
6. 4211194 - Ignition system for internal combustion engines (1980-07-08),
7. 4197821 - Device for controlling vacuum advancing of ignition timing (1980-04-15),
8. 4168691 - Ignition system for internal combustion engine (1979-09-25),
9. 4159013 - Spark timing control device for use in internal combustion engines (1979-06-26),
10. 4131097 - Ignition system for internal combustion engines (1978-12-26),

Title: Yuji Takeda: Innovator in Engine Control Systems

Introduction

Yuji Takeda is a prominent inventor based in Susono, Japan. He has made significant contributions to the field of engine control systems, holding a total of 10 patents. His innovative work focuses on improving engine performance and reliability through advanced ignition timing control.

Latest Patents

Among his latest patents is a system for controlling ignition timing in an engine. This system generates a knocking signal through a sensor in response to engine knocking. The operation of the sensor is continuously monitored, and in the event of a fault, a dummy signal is utilized to control engine timing. This dummy signal effectively retards the engine timing to a level where knocking is unlikely to occur. This innovative approach enhances engine efficiency and reduces the risk of damage.

Career Highlights

Yuji Takeda has worked with notable companies in the automotive industry, including Toyota Motor Corporation and Nippon Soken, Inc. His experience in these organizations has allowed him to develop and refine his expertise in engine technology.

Collaborations

Throughout his career, Takeda has collaborated with esteemed colleagues such as Daisaku Sawada and Takashi Shigematsu. These partnerships have contributed to the advancement of his projects and innovations.

Conclusion

Yuji Takeda's contributions to engine control systems exemplify his dedication to innovation in automotive technology. His patents reflect a commitment to enhancing engine performance and reliability, making him a significant figure in the field.

Profile summary based on public USPTO records.
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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