Shinobu Takeyasu

Title: **Innovations by Inventor Shinobu Takeyasu**

Introduction

Shinobu Takeyasu is a distinguished inventor based in Echizen, Japan, who has made significant contributions to the field of single crystal production. With a total of five patents to his name, Takeyasu is recognized for his innovative approaches to improving the efficiency and safety of silicon single crystal pulling apparatuses.

Latest Patents

One of Takeyasu's latest patents is a **silicon single crystal pulling apparatus comprising a vertically movable supporting member holding the heater and shield**. This invention utilizes the Czochralski method, featuring a crucible to receive raw material, a heater for heating the material, and a main chamber accommodating both the crucible and heater. The design includes a shield that protects the chamber from radiant heat and a vertically movable supporting member that allows adjustments to thermal history, enhances the pulling rate of silicon single crystals, and reduces oxygen concentration.

Another notable patent is a **single crystal production apparatus and method featuring a pedestal with grooves**. This apparatus also employs the Czochralski method and integrates a crucible for storing raw material melt and a movable pedestal to support the crucible. Additionally, it has a crucible rotating shaft for rotation and a melt receiver with a center sleeve. The grooves on the pedestal are specifically designed to prevent raw material leaks, thereby ensuring safety and preventing damage to the apparatus during unexpected incidents.

Career Highlights

Shinobu Takeyasu currently works with Shin-Etsu Handotai Co., Ltd., a leading company in the semiconductor industry. His work has not only led to notable patents but also positioned him as a key figure in enhancing the production of silicon single crystals, which are crucial for various technological applications.

Collaborations

Throughout his career, Takeyasu has collaborated with esteemed coworkers, including Atsushi Iwasaki and Tetsuhiro Oda. Their collective efforts have contributed to advancements in crystal growth technology, further solidifying the reputation of their team within the industry.

Conclusion

Shinobu Takeyasu exemplifies the spirit of innovation through his patents and collaboration within the semiconductor field. His contributions, particularly in silicon single crystal production, demonstrate the importance of continual advancements in technology. As the industry strives for greater efficiency and safety, Takeyasu's work will undoubtedly remain influential in shaping the future of crystal growth and materials science.