This inventor holds 8 USPTO granted patents and 10 published patent applications and 6 EPO patents. Top assignees: Kyoto University, Stanley Electric Co., Ltd, Stanley Electric Corporation. Active years: 2022-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
8 out of 871 
7 out of 1,445 
1 out of 47 
Years Active: 2022-2026
Title: Innovations of Tomoaki Koizumi
Introduction
Tomoaki Koizumi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of surface-emitting laser devices. With a total of six patents to his name, Koizumi's work has advanced the understanding and application of group III nitride semiconductors.
Latest Patents
Among his latest patents is a surface-emitting laser element and its manufacturing method. This invention involves a surface-emitting laser element formed of a group III nitride semiconductor. It includes a first clad layer of a first conductivity type, a first guide layer with a photonic crystal layer, and an active layer. The design features a second embedding layer and a second clad layer of a second conductivity type, which is opposite to the first. Another notable patent is a method for manufacturing a GaN-based surface-emitting laser by MOVPE. This method includes several steps, such as growing a first cladding layer, forming holes in the guide layer, and applying specific gas ratios during the etching process.
Career Highlights
Tomoaki Koizumi has had a distinguished career, working with esteemed institutions such as Kyoto University and Stanley Electric Co., Ltd. His experience in these organizations has allowed him to collaborate on innovative projects and contribute to advancements in laser technology.
Collaborations
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile