Masao Tozuka

Title: The Innovations of Masao Tozuka

Introduction

Masao Tozuka is a notable inventor based in Ohmiya, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work primarily focuses on alignment apparatuses that enhance the precision of semiconductor manufacturing processes.

Latest Patents

Tozuka's latest patents include an innovative alignment apparatus designed to align two points on a first standard line on a first workpiece with two regions centered on standard points on a second standard line on a second workpiece. This apparatus aims to reduce alignment errors between the two workpieces by utilizing diamond-shaped regions. Another notable patent involves an alignment apparatus that photoelectrically reads alignment marks on a mask and a wafer for semiconductor circuit element production. This technology detects positional deviations and allows for parallel movement of either the mask or the wafer to achieve precise alignment, correcting any interval errors that may exist.

Career Highlights

Masao Tozuka is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and optical products. His work at Canon has allowed him to develop cutting-edge technologies that are essential for the advancement of semiconductor manufacturing.

Collaborations

Throughout his career, Tozuka has collaborated with esteemed colleagues such as Ichiro Kano and Hideki Yoshinari. These collaborations have contributed to the development of innovative solutions in the field of semiconductor technology.

Conclusion

Masao Tozuka's contributions to the field of semiconductor technology through his patents and work at Canon Kabushiki Kaisha highlight his importance as an inventor. His innovative alignment apparatuses are paving the way for more precise manufacturing processes in the industry.