Seiichi Kirii

Title: Seiichi Kirii: Innovator in Hexachlorodisilane Production

Introduction

Seiichi Kirii is a notable inventor based in Yokkaichi, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of hexachlorodisilane. His innovative processes have implications for the semiconductor industry and materials science.

Latest Patents

Seiichi Kirii holds a patent for a process for producing hexachlorodisilane. This process involves condensing an exhaust gas discharged from a reactor that produces polycrystalline silicon from chlorosilane and hydrogen. The method separates hydrogen, distills the resultant condensate to isolate unreacted chlorosilane and by-product silicon tetrachloride, and further distills to recover hexachlorodisilane. Notably, the hexachlorodisilane and tetrachlorodisilane recovered through this process exhibit far higher purity than conventional methods that utilize metallic silicon. He has 1 patent to his name.

Career Highlights

Seiichi Kirii is associated with Mitsubishi Materials Polycrystalline Silicon Corporation, where he applies his expertise in chemical processes. His work has been instrumental in advancing the production techniques used in the industry.

Collaborations

Throughout his career, Seiichi has collaborated with esteemed colleagues such as Mitsutoshi Narukawa and Hisayuki Takesue. These collaborations have fostered innovation and development in their respective fields.

Conclusion

Seiichi Kirii's contributions to the production of hexachlorodisilane highlight his role as an innovator in chemical engineering. His patented process not only enhances purity but also sets a new standard in the industry.