Toyota, Japan

Seiji Nakahigashi

This inventor holds 12 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Cataler Corporation. Active years: 2018-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Nakahigashi. Retrieved from https://idiyas.com/inventor/seiji-nakahigashi

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

USPTO Granted Patents = 12 

% Patents Active = 91.7

 

Average Co-Inventor Count = 8.8

ph-index = 2

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 2018-2026

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12 patents (USPTO):Explore Patents

Title: Seiji Nakahigashi: Innovator in Exhaust Gas Purification Technology

Introduction

Seiji Nakahigashi is a distinguished inventor based in Toyota, Japan, who has made significant contributions to the field of exhaust gas purification. With a remarkable portfolio of eleven patents, Nakahigashi is recognized for his innovative approaches to reducing harmful emissions from internal combustion engines.

Latest Patents

Nakahigashi's latest inventions include the development of an advanced exhaust gas purification system and an efficient exhaust gas purification device. The exhaust gas purification system is designed to suppress carbon monoxide (CO) emissions by utilizing a combination of a three-way catalyst and a particulate filter. The system incorporates a control device that manages fuel cuts during the deceleration of the engine, ensuring improved environmental performance.

In addition, the exhaust gas purification device enhances overall purification efficiency. It comprises a substrate with a catalyst layer made from a porous carrier, featuring a platinum group catalytic metal and specific alkaline earth metals. This innovative design supports chemical reactions that further minimize harmful emissions, illustrating Nakahigashi's commitment to advancing eco-friendly technologies.

Career Highlights

Throughout his career, Seiji Nakahigashi has worked for notable organizations that include Toyota Jidosha Kabushiki Kaisha and Cataler Corporation. His expertise in engine technology and environmental engineering has propelled advancements in emission control systems, demonstrating his impact on the automotive industry.

Collaborations

Nakahigashi's innovative journey includes collaborations with esteemed colleagues such as Isao Chinzei and Masahide Miura. These partnerships have fostered a creative environment that encourages the exploration of novel solutions in emission reduction and automotive engineering.

Conclusion

Seiji Nakahigashi stands out as a prominent inventor dedicated to enhancing air quality through the innovative purification of exhaust gases. His patents reflect a deep understanding of engineering principles and a commitment to environmental sustainability. As the automotive industry continues to evolve, Nakahigashi's contributions will undoubtedly play a vital role in shaping a cleaner, more efficient future.

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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