Harvey A Brown

Title: The Innovative Contributions of Harvey A. Brown

Introduction

Harvey A. Brown is a notable inventor based in Lake Elmo, Minnesota, recognized for his significant contributions to the field of thermographic systems and liquid crystal display technologies. With a total of eight patents to his name, Brown has made remarkable advancements that enhance the functionality and stability of various materials used in display technologies.

Latest Patents

Among his latest patents is a thermographic system utilizing naphthoylated leuco phenazine dyes. This innovative composition includes a leuco dye that contains a phenazine nucleus with naphthoyl substituents, which provides a range of red and magenta colors. These colors exhibit greater stability under light and temperature conditions typical of overhead projectors, surpassing the performance of previously available leuco dyes. Another significant patent involves helichromic-smectic liquid crystal compositions and display cells. This composition is designed for thermally-addressable liquid crystal display devices and includes a smectic liquid crystal material combined with a helichromic compound. The helichromic compound is capable of propagating visible light in a circularly polarized manner, resulting in displays that operate at lower voltages, have faster response times, and offer higher contrast ratios.

Career Highlights

Harvey A. Brown has spent a considerable part of his career at the Minnesota Mining and Manufacturing Company, where he has been instrumental in developing innovative technologies. His work has not only contributed to the company's success but has also advanced the field of display technologies significantly.

Collaborations

Throughout his career, Brown has collaborated with esteemed colleagues such as William A. Huffman and Louis M. Leichter. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Harvey A. Brown's contributions to thermographic systems and liquid crystal display technologies exemplify the impact of innovation in enhancing material performance. His patents reflect a commitment to advancing technology and improving user experience in display applications.