Kitakyushu, Japan

Katsumi Egashira

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Kabushiki Kaisha Toshiba. Active years: 2003-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Egashira. Retrieved from https://idiyas.com/inventor/katsumi-egashira

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

USPTO Granted Patents = 2 

Average Co-Inventor Count = 1.8

ph-index = 2

Forward Citations = 99(Granted Patents)


Location History:

  • Tokyo, JP (2003)
  • Kitakyushu, JP (2006)

Company Filing History:


Years Active: 2003-2006

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2 patents (USPTO):Explore Patents

Title: Katsumi Egashira: Innovator in Semiconductor Technology

Introduction

Katsumi Egashira is a prominent inventor based in Kitakyushu, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on advancing the efficiency and functionality of light-emitting elements and semiconductor wafers.

Latest Patents

Egashira's latest patents include a method of manufacturing a semiconductor light-emitting element. This invention features a semiconductor light-emitting element that comprises a substrate with a first and second surface. A semiconductor laminate is formed on the first surface, containing a light-emitting layer and a current diffusion layer with a light-extracting surface. The light-extracting surface is designed with a finely recessed/projected structure, where 90% of it has a cone-like configuration, with a height of the projected portion being 100 nm or more and a base width ranging from 10-500 nm.

Another notable patent is related to an SOI semiconductor wafer with varying thickness active layers. This wafer includes multiple element forming sections, each with distinct supporting substrates and buried insulating films. The active layers differ in thickness, allowing for enhanced functionality in semiconductor devices.

Career Highlights

Katsumi Egashira is associated with Kabushiki Kaisha Toshiba, a leading company in the technology sector. His work at Toshiba has allowed him to push the boundaries of semiconductor innovation, contributing to the company's reputation for excellence in technology.

Collaborations

Egashira has collaborated with notable colleagues such as Shunji Yoshitake and Kenichi Ohashi. These partnerships have fostered a collaborative environment that enhances the development of innovative technologies.

Conclusion

Katsumi Egashira's contributions to semiconductor technology exemplify his dedication to innovation. His patents reflect a commitment to advancing the field, making him a significant figure in the industry.

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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