Kazuhisa Mitsuhata

Title: **Kazuhisa Mitsuhata: Innovator in Functional Sheet Technology**

Introduction

Kazuhisa Mitsuhata is a notable inventor based in Tokyo, Japan, known for his contributions to the field of functional sheet technology. With a commendable portfolio of four patents, Mitsuhata has specialized in developing innovative materials and designs that enhance optical applications.

Latest Patents

Mitsuhata's latest patents include a functional sheet that features a functional layer situated between protective layers. This functional layer can be a polarizing film layer, a photochromic layer, or a combination of both. The protective layers incorporate a resin (C) that includes a polyester resin (A) derived from the polycondensation of 1,4-cyclohexanedimethanol and 1,4-cyclohexanedicarboxylic acid, along with an aromatic polycarbonate resin (B). The specific formulation comprises 10 to 100 parts by mass of the polyester resin (A) and 0 to 90 parts by mass of the aromatic polycarbonate resin (B).

Moreover, one of his significant inventions relates to an optical film and optical laminate designed for eyewear, particularly polarized sunglasses. This innovative eyewear integrates cholesteric liquid crystal layers, providing not only a metallic tone and antiglare properties but also ensuring minimal reduction in light-polarizing element absorptive capability. Furthermore, it remains resilient against external degrading factors such as sebum, moisture, and salt air.

Career Highlights

Throughout his career, Mitsuhata has worked with esteemed organizations such as Mitsubishi Gas Chemical Company, Inc. and MGC Filsheet Co., Ltd. His roles have furthered the development of cutting-edge materials that set new standards in the field of optics and functional sheets.

Collaborations

Mitsuhata has collaborated with fellow innovators, including Takuya Gotou and Kyousuke Nakamura. These partnerships have enriched his inventions, blending diverse expertise to achieve novel advancements in their respective fields.

Conclusion

Kazuhisa Mitsuhata exemplifies the spirit of innovation through his work in functional sheet technology. With a strong foundation in optics and material science, his patents continue to impact various applications, ultimately enhancing our daily experiences with eyewear and beyond.