Company Filing History:
2 out of 42,496 
1 out of 87 Years Active: 1997
Title: Shigeo Otaka: Innovator in Semiconductor Technology
Introduction
Shigeo Otaka is a notable inventor based in Takasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on improving the reliability and usability of insulated gate semiconductor devices.
Latest Patents
Otaka's latest patents include an insulated gate semiconductor device and a driving circuit device. The first patent addresses improvements in the protective functions of insulated gate semiconductor devices, enhancing their reliability and ease of use. This invention incorporates a power insulated gate semiconductor element and a protection circuit using multiple MOSFETs to control the power element. The design also features a constant-voltage circuit that utilizes forward voltages across diodes, ensuring effective voltage regulation. The second patent introduces a compounded power MOSFET that withstands high positive and negative voltages, allowing it to be fabricated on a single chip using conventional processes. This innovation aims to improve the performance and reliability of power MOSFETs.
Career Highlights
Throughout his career, Shigeo Otaka has worked with prominent companies such as Hitachi, Ltd. and Hitachi ULSI Engineering Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Otaka has collaborated with notable colleagues, including Kozo Sakamoto and Isao Yoshida. These partnerships have likely fostered a creative environment that has led to advancements in their respective fields.
Conclusion
Shigeo Otaka's contributions to semiconductor technology through his patents and career achievements highlight his role as an influential inventor. His work continues to impact the industry, enhancing the functionality and reliability of semiconductor devices.