Yokohama, Japan

Seiju Kezuka

This inventor holds 3 USPTO granted patents. Top assignees: Nippon Petrochemicals Company, Limited, Nippon Oil Company. Active years: 1978-1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiju Kezuka. Retrieved from https://idiyas.com/inventor/seiju-kezuka

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.6

ph-index = 3

Forward Citations = 74(Granted Patents)


Location History:

  • Yokohama, JA (1978)
  • Yokohama, JP (1986)

Company Filing History:


Years Active: 1978-1986

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3 patents (USPTO):Explore Patents

Title: Seiju Kezuka: Innovator in Embossed Sheet Technology

Introduction

Seiju Kezuka is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of materials science, particularly in the development of methods and apparatuses for forming embossed sheets. With a total of 3 patents to his name, Kezuka's work showcases his innovative approach to engineering and material properties.

Latest Patents

One of his latest patents is a "Method and apparatus for continuously forming embossed sheets." This invention focuses on creating embossed sheets that possess excellent mechanical properties without directional characteristics. The apparatus features temperature-adjustable forming rolls, axial distance regulating devices, and a driving mechanism for rotation. The method involves introducing a sheet into the space between the forming rolls, where it contacts projections that engage without pressed contact, resulting in plastic deformation and the formation of numerous projections on both sides of the sheet.

Another significant patent is for an "Electrically-conductive resin composition." This composition includes an ethylene/α-olefin copolymer combined with carbon black. The copolymer is synthesized by copolymerizing ethylene with an α-olefin containing 3 to 12 carbon atoms, utilizing a catalyst that includes a solid catalyst component and an organoaluminum compound. This innovative composition is designed to enhance the electrical conductivity of materials.

Career Highlights

Throughout his career, Seiju Kezuka has worked with prominent companies such as Nippon Petrochemicals Company, Limited and Nippon Oil Company. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the field of materials science.

Collaborations

Kezuka has collaborated with notable colleagues, including Moriya Iida and Tsuneo Yoshimura. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Seiju Kezuka's contributions to the field of embossed sheet technology and electrically-conductive materials highlight his innovative spirit and dedication to advancing material science. His patents reflect a commitment to improving mechanical properties and electrical conductivity, making him a significant figure in his field.

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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