Kunio Hatanaka

Title: Innovations of Kunio Hatanaka

Introduction

Kunio Hatanaka is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of optical materials and has been awarded 2 patents for his innovative work. His inventions focus on enhancing the performance of optical elements and films.

Latest Patents

Hatanaka's latest patents include a polycarbonate resin film and a manufacturing process thereof. This film has an average thickness of 10 to 150 μm, a thickness nonuniformity of 2% or less, and a retardation R(589) in the plane of the film measured at a wavelength of 589 nm of 12 nm or less. It is specifically designed for optical purposes. Another significant patent is for an optical element and achromatic lens. This optical element comprises a polymer with a structural unit derived from a specific dihydroxy compound, typified by 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoro propane (bisphenol AF). The relationship between the refractive index and the Abbe number satisfies a specific formula, making it useful for correcting chromatic aberration.

Career Highlights

Kunio Hatanaka is currently associated with Teijin Chemicals Limited, where he continues to innovate in the field of optical materials. His work has been instrumental in advancing the technology used in various optical applications.

Collaborations

Hatanaka has collaborated with notable coworkers such as Masahiro Murakami and Hironobu Katoh. Their combined expertise has contributed to the successful development of advanced optical technologies.

Conclusion

Kunio Hatanaka's contributions to the field of optical materials through his patents reflect his innovative spirit and dedication to advancing technology. His work continues to influence the industry and pave the way for future advancements.