Aichi, Japan

Kazuyoshi Torii

This inventor holds 17 USPTO granted patents and 11 EPO patents, primarily in Spark Plug Technology. Top assignee: Ngk Spark Plug Company, Limited. Active years: 2006-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuyoshi Torii. Retrieved from https://idiyas.com/inventor/kazuyoshi-torii-s4nu9fb1

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

Calculating rank

% Patents Active = 76.5

 

Average Co-Inventor Count = 3.5

ph-index = 5

Forward Citations = 92(Granted Patents)


Location History:

  • Aichi, JP (2006 - 2013)
  • Chita-gun, JP (2010 - 2014)
  • Nagoya, JP (2018 - 2024)

Company Filing History:


Years Active: 2006-2024

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Areas of Expertise:
Spark Plug
Internal Combustion Engine
Electrode Design
Manufacturing Method
Noble Metal Tip
Ground Electrode
Projection Welding
Weld Metal Zone
Alloy Composition
Resistance Welding
Bilayer Electrode
17 patents (USPTO):Explore Patents

Title: Kazuyoshi Torii: Innovator in Spark Plug Technology

Introduction

Kazuyoshi Torii is a prominent inventor based in Aichi, Japan. He has made significant contributions to the field of spark plug technology, holding a total of 17 patents. His innovative designs have improved the performance and reliability of spark plugs used in various applications.

Latest Patents

Among his latest patents, Torii has developed a spark plug that reduces variation in the discharge point. This spark plug features a center electrode, a metal shell that insulates and holds the center electrode, and a ground electrode. The ground electrode includes a base material with one end connected to the metal shell and a tip that has a discharge surface opposed to the center electrode, creating a spark gap. The discharge surface is uniquely designed with a quadrangular shape and is chamfered on all four sides, with a specific C chamfer on one side. Additionally, he has patented another spark plug that incorporates a noble metal tip, which is laser-welded to either the center electrode or the ground electrode. This design includes a fused portion formed by laser welding, enhancing the durability and efficiency of the spark plug.

Career Highlights

Kazuyoshi Torii is currently employed at NGK Spark Plug Company, Limited, where he continues to innovate and develop advanced spark plug technologies. His work has been instrumental in enhancing the performance of automotive and industrial engines.

Collaborations

Throughout his career, Torii has collaborated with notable colleagues, including Mamoru Musasa and Akira Suzuki. These partnerships have fostered a creative environment that has led to numerous advancements in spark plug technology.

Conclusion

Kazuyoshi Torii's contributions to spark plug innovation have made a significant impact in the automotive industry. His patents reflect a commitment to improving engine performance and reliability. His work continues to influence the future of spark plug 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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