This inventor holds 6 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi-High-Technologies Corporation, Hitachi Instruments Engineering Co., Ltd.. Active years: 1999-2009.
Company Filing History:
4 out of 42,719 
2 out of 2,874 
1 out of 9 Years Active: 1999-2009
Title: Yutaka Hojyo: Innovator in Wafer Alignment Technology
Introduction
Yutaka Hojyo is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of charged particle beam apparatuses, particularly in wafer alignment methods. With a total of 6 patents to his name, Hojyo's work has advanced the precision and efficiency of semiconductor manufacturing processes.
Latest Patents
One of Hojyo's latest patents is a wafer alignment method for dual beam systems. This innovation involves a gradient charged particle beam apparatus that can move with high accuracy to a specific position. It eliminates the influences of warp on the wafer surface, enhancing the alignment process. A mark for aligning visual fields is positioned on a wafer holder, serving as a reference point. The height of the observation point on the sample is adjusted to match the height of the mark, ensuring that the visual field of the gradient column aligns with that of the vertical column using a known offset.
Career Highlights
Throughout his career, Hojyo has worked with prominent companies such as Hitachi, Ltd. and Hitachi High-Technologies Corporation. His experience in these organizations has allowed him to develop and refine his innovative technologies in the semiconductor industry.
Collaborations
Hojyo has collaborated with notable colleagues, including Minoru Sasaki and Yuji Tange. Their combined expertise has contributed to the advancement of technologies in their field.
Conclusion
Yutaka Hojyo's contributions to wafer alignment technology have made a significant impact on the semiconductor industry. His innovative patents and collaborations reflect his dedication to advancing precision in manufacturing processes.