Shigeru Yamagata

Title: Shigeru Yamagata: A Pioneer in Silica Container Innovations

Introduction

Shigeru Yamagata is an accomplished inventor based in Narashino, Japan, renowned for his significant contributions to the field of silica container technology. With an impressive portfolio of 19 patents, his work has advanced the development of high-quality materials used in various applications, showcasing his expertise in material science and engineering.

Latest Patents

Among Yamagata's latest innovations are two notable patents:

1. **Silica Container and Method for Producing the Same** - This patent details a silica container that consists of a substrate exhibiting rotational symmetry, predominantly composed of silica, integrated with gaseous bubbles. The design also features a transparent silica glass layer in the inner peripheral part and an inner layer formed on the substrate's internal surface. Yamagata's container achieves remarkable light transmittance of 91.8% to 93.2% at a wavelength of 600 nm while maintaining strict limits on the concentrations of lithium, sodium, and potassium.

2. **Single Crystal Silicon Pulling Silica Container and Manufacturing Method Thereof** - This patent introduces a single-crystal silicon pulling silica container, which includes an outer opaque silica glass layer containing gaseous bubbles and a transparent inner silica glass layer devoid of such bubbles. This innovative design minimizes defects such as voids or pinholes in pulled single-crystal silicon, enhancing manufacturing quality.

Career Highlights

Shigeru Yamagata's career has been marked by significant contributions to leading companies in the quartz and silica industries. He has worked with Shin-Etsu Quartz Products Co., Ltd. and Heraeus Quarzglas GmbH, where he has applied his expertise to develop advanced products and technologies.

Collaborations

Throughout his career, Yamagata has collaborated with esteemed colleagues, including Tomomi Usui and Kyoichi Inaki. These partnerships have fostered innovation and enabled the exploration of new methodologies in the creation of silica materials.

Conclusion

Shigeru Yamagata's pioneering work in silica container technology has positioned him as a leading inventor in his field. With 19 patents to his name and a commitment to innovation, his contributions continue to influence the industry and inspire future advancements in material science.