This inventor holds 13 USPTO granted patents and 1 published patent application. Top assignees: Rohm Co., Ltd., Hokkaido University, Tdk Corporation. Active years: 2011-2026.
Company Filing History:
12 out of 6,021 
2 out of 442 
2 out of 8,238 
Years Active: 2011-2026
Title: Yoichi Mugino: Innovator in Semiconductor Technology
Introduction
Yoichi Mugino is a prominent inventor based in Kyoto, Japan, known for his significant contributions to semiconductor technology. With a total of 12 patents to his name, he has made remarkable advancements in the field of light-emitting devices and semiconductor lasers.
Latest Patents
One of his latest patents is for a semiconductor light-emitting device. This invention provides a simple structure capable of improving light extraction efficiency. The device includes a substrate, a metal layer on the substrate, a light-transmitting conductive layer on the metal layer, an insulation layer on the light-transmitting conductive layer, and a III-V semiconductor structure on the insulation layer. The III-V semiconductor structure consists of a light-emitting layer, a p-type semiconductor layer, and an n-type semiconductor layer. The refractive indices of the p-type GaP contact layer, the insulation layer, and the light-transmitting conductive layer satisfy a specific relation to enhance performance.
Another notable patent is for a semiconductor laser device and its manufacturing method. This device features an n-type clad layer, a first p-type clad layer, and a ridge stripe. The active layer is interposed between the n-type clad layer and the first p-type clad layer, while a current-blocking layer is formed on the side surfaces of the ridge stripe. The ridge stripe includes a second p-type clad layer shaped into a ridge stripe on the opposite surface of the first p-type clad layer from the n-type clad layer.
Career Highlights
Throughout his career, Yoichi Mugino has worked with leading companies in the semiconductor industry, including Rohm Co., Ltd. and TDK Corporation. His work has significantly impacted the development of efficient semiconductor devices.
Collaborations
He has collaborated with notable colleagues such as Tsuguki Noma and Yoshito Nishioka, contributing to various innovative projects in the semiconductor field.
Conclusion
Yoichi Mugino's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in light-emitting devices and semiconductor lasers.