Company Filing History:
11 out of 696 
11 out of 100 Years Active: 1990-1992
Title: **Katsuo Shirai: Innovator in Silicon Thin Film Transistors**
Introduction
Katsuo Shirai is a notable inventor located in Tochigi, Japan, recognized for his significant contributions to the field of semiconductor technology. With a portfolio of 11 patents, Shirai has been instrumental in advancing the design and functionality of silicon thin film transistors.
Latest Patents
One of Shirai's latest inventions is the silicon thin film transistor array, which features a multitude of silicon thin film transistors arranged in an array-like formation. Each transistor consists of a variety of intricate components, including an insulating substrate, gate electrode, gate insulating layer, and impurity-doped silicon layers, among others. This innovative design enables efficient connections between transistors through gate and source wiring, enhancing performance in electronic applications.
Career Highlights
Shirai's career has seen him working with several prominent companies, including Seikosha Co., Ltd. and Nippon Precision Circuits Inc. His experience at these organizations has facilitated his exploration and development of advanced semiconductor technologies, contributing to the evolution of electronic components.
Collaborations
Throughout his professional journey, Shirai has collaborated with notable colleagues, including Sakae Tanaka and Yoshiaki Watanabe. These partnerships have allowed for knowledge exchange and innovation, further driving advancements in the field of electronics.
Conclusion
Katsuo Shirai's work in the realm of silicon thin film transistors showcases his dedication to technological advancement and innovation. With 11 patents to his name, he continues to influence the electronics industry, paving the way for future developments in semiconductor technology.