Nobusuke Yamada

Title: **Nobusuke Yamada: Innovator in Quartz Glass Technologies**

Introduction

Nobusuke Yamada is a distinguished inventor based in Sagamihara, Japan, recognized for his substantial contributions to the development of advanced quartz glass technologies. With a total of four patents to his name, Yamada has made significant strides in creating materials that enhance optical performance and heat resistance, which are essential in various high-tech applications.

Latest Patents

Yamada's latest patents include a groundbreaking method for producing **opaque quartz glass** and a **fused silica glass** that boasts high internal transmittance of ultraviolet light. The opaque quartz glass is designed to have excellent infrared light shielding properties and minimal water absorption. His innovative production process involves mixing fine amorphous silica powder with a pore-forming agent, molding it, and heating it under controlled conditions. The result is a high-density, opaque glass characterized by closed pores with an average size of 5 to 20 micrometers, making it highly effective for heat shielding applications.

In addition, Yamada's **fused silica glass** showcases remarkable transmittance of UV light at a wavelength of 245 nm, even surpassing 95% at a thickness of 10 mm. This glass type has a very low content of metal impurities and exhibits excellent heat resistance, making it suitable for various optical goods and components used in semiconductor production and liquid crystal display apparatus.

Career Highlights

Throughout his career, Nobusuke Yamada has worked with reputable companies in the glass and materials sector, including **Tosoh Corporation** and **Nippon Silica Glass Co., Ltd.** His work focuses on developing high-performance glass that meets the demanding standards of modern technology, particularly in optics and electronics.

Collaborations

Yamada collaborated with talented colleagues such as **Koji Tsukuma** and **Hideaki Segawa**. Together, they have advanced the understanding and application of quartz glass materials, contributing to the innovative solutions that mark Yamada's career.

Conclusion

As an influential inventor, Nobusuke Yamada has significantly impacted the fields of glass technology and materials science. His patents not only showcase his innovative spirit but also reflect his dedication to enhancing the capabilities of quartz glass for practical applications in various industries. Through continuous research and collaboration, Yamada remains a leading figure in the pursuit of advanced materials.