An-Hung Yeh

Title: An-Hung Yeh: Innovator in Photochromic Technology

Introduction

An-Hung Yeh is a notable inventor based in Mars, Pennsylvania, who has made significant contributions to the field of photochromic technology. With a focus on developing innovative materials, he has secured a patent that showcases his expertise and creativity in this specialized area.

Latest Patents

An-Hung Yeh holds a patent for a photochromic article that includes a substrate and a photochromic layer formed from a curable photochromic composition. This composition consists of a polyol component, which includes a polycarbonate diol, and an isocyanate component that features an unblocked polyfunctional isocyanate and/or a blocked polyfunctional isocyanate. The patent specifies that the equivalent ratio of blocked/unblocked isocyanate equivalents to hydroxyl equivalents of the polyol component is at least 5:1. Notably, the photochromic article exhibits a T(Fade Half Life) at 23° C. of less than or equal to 70 seconds, demonstrating its efficiency and effectiveness.

Career Highlights

An-Hung Yeh is currently employed at Transitions Optical, Inc., where he continues to work on advancements in optical technologies. His role at the company allows him to apply his innovative ideas and contribute to the development of cutting-edge products in the optical industry.

Collaborations

Throughout his career, An-Hung Yeh has collaborated with talented individuals such as Joseph D. Turpen and Elizabeth Ann Zezinka. These collaborations have likely enriched his work and contributed to the success of his projects.

Conclusion

An-Hung Yeh is a distinguished inventor whose work in photochromic technology has led to significant advancements in the field. His patent for a photochromic article exemplifies his innovative spirit and commitment to developing effective solutions.