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For the Inventor, By the Inventor

Nishio, Japan

Kouji Yamanaka

This inventor holds 3 USPTO granted patents. Top assignee: Denso Corporation. Active years: 2014-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Yamanaka. Retrieved from https://idiyas.com/inventor/kouji-yamanaka

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

Calculating rank
USPTO Granted Patents = 3

% Patents Active = 33.3

Average Co-Inventor Count = 1.2

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:

goldMedal3 out of 20,443 
 
Denso Corporation
 patents

Years Active: 2014-2016

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3 patents (USPTO):Explore Patents
1. 9397482 - Spark plug for internal combustion engine (2016-07-19),
2. 8841825 - Spark plug designed to increase service life thereof (2014-09-23),
3. 8810119 - Spark plug for an internal combustion engine (2014-08-19),

Title: Kouji Yamanaka: Innovator in Spark Plug Technology

Introduction

Kouji Yamanaka is a notable inventor based in Nishio, Japan. He has made significant contributions to the field of internal combustion engines, particularly through his innovative designs for spark plugs. With a total of 3 patents to his name, Yamanaka continues to push the boundaries of automotive technology.

Latest Patents

Yamanaka's latest patents include a spark plug designed for internal combustion engines. This spark plug features a tubular housing and a tubular insulator held inside the housing. It includes a center electrode and a ground electrode that forms a spark discharge gap. The design also incorporates a plug cover that creates an auxiliary combustion chamber, enhancing the efficiency of the spark plug. Another notable patent focuses on increasing the service life of the spark plug. This design includes an inward top end protrusion that enhances the strength of the electric field surrounding the center electrode, allowing for a decrease in the initial required voltage and thus extending the spark plug's lifespan.

Career Highlights

Kouji Yamanaka is currently employed at Denso Corporation, a leading company in automotive technology. His work at Denso has allowed him to collaborate with other talented engineers and inventors in the field. His innovative designs have contributed to advancements in engine performance and efficiency.

Collaborations

Yamanaka has worked closely with his coworker, Toshikazu Shimizu, to develop and refine his inventions. Their collaboration has led to significant improvements in spark plug technology, benefiting the automotive industry.

Conclusion

Kouji Yamanaka's contributions to spark plug technology demonstrate his commitment to innovation in the automotive sector. His patents reflect a deep understanding of engineering principles and a desire to enhance engine performance. Through his work at Denso Corporation, Yamanaka continues to influence the future of automotive technology.

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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