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For the Inventor, By the Inventor

Aichi, Japan

Katsura Matsubara

This inventor holds 8 USPTO granted patents and 3 EPO patents. Top assignee: Ngk Spark Plug Company, Limited. Active years: 2000-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsura Matsubara. Retrieved from https://idiyas.com/inventor/katsura-matsubara

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

USPTO Granted Patents = 8

% Patents Active = 75.0

 

Average Co-Inventor Count = 3.8

ph-index = 5

Forward Citations = 55(Granted Patents)


Location History:

  • Aichi, JP (2003 - 2007)
  • Iwakura, JP (2000 - 2010)

Company Filing History:

goldMedal8 out of 2,606 
 
Ngk Spark Plug Company, Limited
 patents

Years Active: 2000-2010

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8 patents (USPTO):Explore Patents
1. 7705273 - Ceramic heater, method of producing the same, and glow plug using a ceramic heater (2010-04-27),
2. 7282670 - Ceramic heater and glow plug having the same (2007-10-16),
3. 6849207 - Silicon nitride sintered material and production process thereof (2005-02-01),
4. 6657166 - Silicon nitride sintered material and production process thereof (2003-12-02),
5. 6621052 - Silicon nitride-tungsten carbide composite sintered material, process for preparing the same and glow plug (2003-09-16),
6. 6563089 - Silicon nitride—tungsten carbide composite sintered material, production process therefor, and glow plug comprising the same (2003-05-13),
7. 6559579 - Alumina-based sintered body insulator for spark plugs (2003-05-06),
8. 6069105 - Alumina-based sintered materials and process for producing the same (2000-05-30),

Title: Innovations of Katsura Matsubara in Ceramic Technology

Introduction

Katsura Matsubara is a notable inventor based in Aichi, Japan, recognized for his contributions to ceramic technology. With a total of 8 patents, he has made significant advancements in the field, particularly in the development of ceramic heaters and glow plugs.

Latest Patents

Matsubara's latest patents include a ceramic heater and a method of producing the same, as well as a glow plug utilizing a ceramic heater. The ceramic heater is designed to suppress damage at the joining portion between the heating and lead portions, ensuring excellent reliability. This innovative heater features a rod-shaped support made from insulative ceramic, with a heating portion embedded in its tip end. The heating portion and lead portions are constructed from the same conductive ceramic, enhancing performance and durability. Additionally, the glow plug incorporates a ceramic heater that prevents electric conduction defects, ensuring high voltage endurance. The heat-generating resistor within the glow plug is composed of an electrically conductive compound, silicon nitride, and a grain boundary amorphous glass phase, with a carefully controlled amount of rare earth elements.

Career Highlights

Matsubara is currently employed at NGK Spark Plug Company, Limited, where he continues to innovate in the field of ceramic technology. His work has significantly impacted the automotive industry, particularly in enhancing the performance and reliability of spark plugs and heating elements.

Collaborations

Matsubara has collaborated with talented coworkers, including Masaya Ito and Hiroki Watanabe, contributing to the advancement of their projects and innovations.

Conclusion

Katsura Matsubara's contributions to ceramic technology through his patents and work at NGK Spark Plug Company, Limited, highlight his role as a leading inventor in the field. His innovations continue to influence the industry, showcasing the importance of research and development in creating reliable and efficient products.

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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