Company Filing History:
Years Active: 1979-1993
Title: The Innovations of Raymond J. LeStrange
Introduction
Raymond J. LeStrange is a notable inventor based in Hendersonville, NC (US), recognized for his contributions to the field of silver halide technology. With a total of seven patents to his name, he has made significant advancements that have impacted various applications in imaging and photography.
Latest Patents
Among his latest patents, LeStrange has developed innovative solutions such as "Silver halide elements with improved speed and low fog." This patent describes substituted diaminedithio-containing compounds that enhance the speed of silver halide emulsions. These compounds can be added in small amounts after the emulsion has been chemically sensitized, just prior to coating, without significantly affecting fog levels, which is a common issue with conventional sensitizers. Another notable patent is "Blue spectral sensitizers for non-tabular silver halide elements." This invention involves zeromethine blue spectral sensitizing dyes that are particularly useful in emulsions made without tabular grains. These emulsions are designed for exposure to light sources rich in blue emission, making them especially beneficial for radiographic elements intended for use with intensifying screens.
Career Highlights
LeStrange's career has been marked by his work at E.I. DuPont de Nemours and Company, where he has applied his expertise in developing advanced photographic materials. His innovative approaches have led to significant improvements in the performance of silver halide emulsions, contributing to the evolution of imaging technologies.
Collaborations
Throughout his career, LeStrange has collaborated with esteemed colleagues such as John H. Bayless, Jr. and Allan R. Schoenberg. These partnerships have fostered a collaborative environment that has enhanced the development of new technologies in the field.
Conclusion
Raymond J. LeStrange's contributions to the field of silver halide technology through his patents and collaborations have made a lasting impact on imaging applications. His innovative spirit continues to inspire advancements in photographic materials and techniques.