Masakatsu Hasuda

Title: Masakatsu Hasuda: Innovator in Charged Particle Beam Technology

Introduction

Masakatsu Hasuda is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of charged particle beam technology, holding a total of four patents. His work focuses on enhancing the precision and efficiency of mask defect repair processes.

Latest Patents

Hasuda's latest patents include a mask defect repair apparatus and a mask defect repair method. The mask defect repair apparatus is designed to perform defect repairs with high accuracy while preventing exposure of the mask to air during movement between the repair apparatus and an inspection device. This innovative apparatus emits charged particle beams, with the irradiation amount corrected by a correction unit, while supplying gas to the mask defect to form a deposition film. Another notable patent is the charged particle beam apparatus, which features a charged particle beam column for irradiating samples and a sample stage unit that allows for rapid placement and replacement of samples. This apparatus includes a rotary stage section and a rotary connector for electrical connections between rotating elements.

Career Highlights

Masakatsu Hasuda is associated with Hitachi High-Tech Science Corporation, where he continues to develop advanced technologies in his field. His work has been instrumental in improving the capabilities of charged particle beam systems, which are crucial for various applications in semiconductor manufacturing and materials science.

Collaborations

Hasuda has collaborated with notable colleagues, including Toshiyuki Iwahori and Yoshitomo Nakagawa. Their combined expertise has contributed to the advancement of technologies in the field of charged particle beams.

Conclusion

Masakatsu Hasuda's innovative work in charged particle beam technology has led to significant advancements in mask defect repair methods and apparatuses. His contributions continue to impact the semiconductor industry positively.