Toyota, Japan

Masatomo Yoshihara

This inventor holds 38 USPTO granted patents and 2 published patent applications and 24 EPO patents, primarily in Internal Combustion Engine. Top assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation, Nippon Soken, Inc.. Active years: 1998-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masatomo Yoshihara. Retrieved from https://idiyas.com/inventor/masatomo-yoshihara

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

USPTO Granted Patents = 38 

% Patents Active = 76.3

 

Average Co-Inventor Count = 4.4

ph-index = 7

Forward Citations = 218(Granted Patents)


Company Filing History:


Years Active: 1998-2022

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Areas of Expertise:
Ignition Timing
Knock Determination
Control Apparatus
Engine Control Device
Internal Combustion Engine
Malfunction Detection
Exhaust Gas Recirculation
Knocking State
Control Method
Vehicle Control
Engine Unit
Determining Device
38 patents (USPTO):Explore Patents

Title: **Masatomo Yoshihara: A Pioneer in Engine Technology**

Introduction

Masatomo Yoshihara, an innovative inventor based in Toyota, Japan, has made significant contributions to the field of internal combustion engines. With an impressive portfolio of 38 patents, his work reflects a deep commitment to improving engine efficiency and performance.

Latest Patents

Yoshihara's latest patents showcase his expertise in engine design and control systems. One of his notable inventions is an **Engine Unit**, which incorporates a cylinder injection valve designed to spray fuel into a combustion chamber. This engine unit features an ignition plug capable of igniting the fuel at precise times. The innovation includes a mechanism that ensures ignition timing is maintained within a predetermined range during the expansion stroke, enhancing the combustion process.

Another significant patent is the **Control Apparatus of Internal Combustion Engine**, which presents a sophisticated control system. This apparatus comprises a port injection valve and a cylinder injection valve, working in conjunction to manage fuel distribution effectively. It features an electronic control unit that adjusts fuel increase amounts differently for the port and cylinder injections when returning from a fuel cut. This differentiation allows for improved engine performance and efficiency.

Career Highlights

Masatomo Yoshihara has been instrumental in advancing engine technologies through his work at prominent organizations. He has been affiliated with Toyota Motor Corporation and Denso Corporation, both of which are leaders in automotive innovation. His time at these companies has allowed him to refine his ideas and bring groundbreaking technologies to market.

Collaborations

Yoshihara has collaborated with talented individuals in the engineering field, including his coworkers Rihito Kaneko and Kenji Kasashima. Together, they have contributed to various projects that have pushed the boundaries of engine technology, further establishing Yoshihara’s reputation as a leading innovator.

Conclusion

Masatomo Yoshihara's contributions to engine technology through his numerous patents underscore his role as a pivotal figure in the automotive industry. His inventions not only enhance engine performance but also pave the way for future innovations in fuel efficiency and combustion processes. As the automotive industry continues to evolve, the impact of Yoshihara's work will undoubtedly be felt for years to come.

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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