Nagoya, Japan

Masashi Hakariya

This inventor holds 20 USPTO granted patents and 1 published patent application and 2 EPO patents, primarily in Internal Combustion Engine Control. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2004-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masashi Hakariya. Retrieved from https://idiyas.com/inventor/masashi-hakariya

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

USPTO Granted Patents = 20 

% Patents Active = 30.0

 

Average Co-Inventor Count = 4.7

ph-index = 3

Forward Citations = 32(Granted Patents)


Location History:

  • Mishima, JP (2004 - 2008)
  • Nagoya, JP (2007 - 2018)
  • Nisshin, JP (2024)

Company Filing History:


Years Active: 2004-2024

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Areas of Expertise:
Controller
Control Method
Fuel Injection
Air-Fuel Ratio
Abnormality Detection
Intake Air Control
Vehicle Control
Multicylinder Engine
Control Apparatus
Imbalance Detection
Memory Medium
Valve Actuating System
20 patents (USPTO):Explore Patents

Title: Innovations by Masashi Hakariya: Revolutionizing Internal Combustion Engine Control

Introduction

Masashi Hakariya, based in Nagoya, Japan, is a prominent inventor known for his significant contributions to automotive technology. With an impressive portfolio of 20 patents, Hakariya specializes in control systems for internal combustion engines, advancing efficiency and performance in the automotive industry.

Latest Patents

Among his latest patents, Hakariya has developed a Controller for Internal Combustion Engine and a Control Method for Internal Combustion Engine. These innovations focus on analyzing the gas temperature differences before and after the engine starts, allowing for precise anomaly diagnosis in exhaust purification devices. The patented technology utilizes an integrated value approach to monitor gas temperatures, providing essential data to ensure optimal performance and environmental compliance.

Career Highlights

Hakariya's career at Toyota Motor Corporation (Toyota Jidosha Kabushiki Kaisha) has been marked by continuous innovation in engine control technologies. His work plays a critical role in meeting regulatory standards while enhancing engine reliability. His inventive solutions demonstrate a deep understanding of both mechanical systems and environmental considerations.

Collaborations

Throughout his career, Hakariya has collaborated with notable colleagues, including Yoshihisa Oda and Isao Nakajima. Together, they have contributed to numerous advancements in engine control systems, facilitating teamwork that synergizes their expertise and drives innovation within their projects.

Conclusion

Masashi Hakariya's contributions to the field of internal combustion engine technology showcase the impact of dedicated inventors in shaping the automotive landscape. His patents not only reflect his commitment to innovation but also emphasize the importance of teamwork and collaboration in driving technological advancements. As the industry evolves, Hakariya's work will undoubtedly continue to influence the future of engine management solutions.

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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