Richard S Himmelwright

Title: Richard S Himmelwright: Innovator in Silver Halide Emulsions

Introduction

Richard S Himmelwright is a notable inventor based in Melrose, MA (US). He has made significant contributions to the field of photography through his innovative work on silver halide emulsions. With a total of 3 patents, Himmelwright has established himself as a key figure in the development of advanced photographic materials.

Latest Patents

Himmelwright's latest patents include groundbreaking advancements in the stabilization of tabular silver halide grain emulsions. One of his notable inventions involves silver halide emulsions that utilize a compound of the formula ##STR1## where R is --SO.sub.2 NH.sub.2. In a preferred embodiment, an azaindene is also employed to enhance the stability of these emulsions. Another significant patent details a method for preparing photosensitive silver halide emulsions. This method focuses on creating silver halide grains with a mean aspect ratio of at least 10 by inducing twinning on the (111) crystal plane in silver bromide grains, followed by growth in a silver halide solvent solution.

Career Highlights

Himmelwright has had a distinguished career, primarily working with Polaroid Corporation. His expertise in the field of photography and materials science has led to numerous advancements that have influenced the industry.

Collaborations

Throughout his career, Himmelwright has collaborated with esteemed colleagues, including Avinash C Mehta and Lloyd D Taylor. These partnerships have fostered innovation and contributed to the success of his projects.

Conclusion

Richard S Himmelwright's contributions to the field of silver halide emulsions have had a lasting impact on photography. His innovative patents and collaborations highlight his dedication to advancing photographic technology.