Nobuhisa Kubota

Title: Nobuhisa Kubota: Innovator in Charge Transfer Devices

Introduction

Nobuhisa Kubota is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on charge transfer devices and methods for forming insulating films, showcasing his expertise in innovative solutions.

Latest Patents

One of his latest patents is a charge transfer device stored with fixed information. This device features a means for grouping a charge transfer section of a semiconductor substrate into multiple semiconductor regions. Each region is equipped with several charge transfer electrodes that store fixed information, which corresponds to a combination of surface potential levels formed at semiconductor subregions under the electrodes. Another significant patent is a method of forming an insulating film. This method involves preparing a polycrystalline substance layer, selectively removing part of it, and then heat-treating the remaining portion in an oxidizing atmosphere to create an oxide layer. After removing the oxide layer, a second heat treatment forms a second oxide layer that acts as an insulating film on the exposed surface.

Career Highlights

Nobuhisa Kubota has worked with prominent companies in the industry, including Tokyo Shibaura Electric Co., Ltd. and Tokyo Shibaura Denki Kabushiki Kaisha. His experience in these organizations has contributed to his development as an inventor and innovator in semiconductor technology.

Collaborations

Throughout his career, Kubota has collaborated with notable colleagues such as Nozomu Harada and Haruo Okano. These collaborations have likely enriched his work and led to advancements in his field.

Conclusion

Nobuhisa Kubota's contributions to semiconductor technology through his patents and career experiences highlight his role as an influential inventor. His innovative approaches to charge transfer devices and insulating films continue to impact the industry.