Yasumi Koinuma

Title: Yasumi Koinuma: Innovator in Optical Materials

Introduction

Yasumi Koinuma is a prominent inventor based in Oita, Japan. He has made significant contributions to the field of optical materials, holding a total of 12 patents. His work focuses on developing advanced materials that enhance the performance of optical devices.

Latest Patents

Koinuma's latest patents include a monomer composition for optical plastic materials and a surface processing solution for contact lenses. The monomer composition provides a plastic optical material with a high refractive index and Abbe number, low specific gravity, and excellent physical properties such as dyeing properties, heat resistance, and impact resistance. This composition includes a di(meth)acrylate compound, divinylbenzene, a crosslinking-type isocyanate compound, a polythiol compound with multiple thiol groups, and a thiourethane bonding accelerating compound. The resulting plastic optical material is utilized in lens manufacturing. Additionally, his alkoxysilane compound enhances the hydrophilicity of various substrates, making it valuable in fibers, optical components, and medical materials, particularly for contact lenses.

Career Highlights

Throughout his career, Koinuma has worked with notable companies such as Nof Corporation and Nippon Oil Fats Co., Ltd. His innovative approaches have led to advancements in optical materials, significantly impacting the industry.

Collaborations

Koinuma has collaborated with talented individuals, including Kenji Kato and Kazunori Doiuchi. These partnerships have fostered a creative environment that has contributed to his success as an inventor.

Conclusion

Yasumi Koinuma's contributions to optical materials demonstrate his expertise and innovative spirit. His patents reflect a commitment to advancing technology in the field, making him a notable figure in the world of inventions.