This inventor holds 4 USPTO granted patents. Top assignee: Eastman-Kodak Company. Active years: 1995-2003.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1995-2003
Title: The Innovative Contributions of Joan F Rachel
Introduction
Joan F Rachel is a notable inventor based in Penfield, NY (US). She has made significant contributions to the field of photography through her innovative patents. With a total of 4 patents, her work has had a lasting impact on photographic developing compositions.
Latest Patents
One of her latest patents focuses on black-and-white developing compositions and methods of use. This concentrated black-and-white photographic developing composition boasts improved stability and environmental compatibility while providing desired sensitometric properties. It incorporates specific antifoggants, including a mercapto-substituted tetrazole and a benzimidazole with electron-withdrawing groups. This composition can be utilized as a first "part" and mixed with a diluted second "part" that contains a gelatin hardening agent. When combined, these two diluted concentrates create a working strength developing composition suitable for producing black-and-white images in various photographic silver halide materials, particularly in radiographic films. Another patent details a method for processing black-and-white elements, such as radiographic films, using a developing composition that includes a hydroquinone developing agent along with specific amounts of sulfite and borate ions. This composition is designed to be effective, rapid, and stable.
Career Highlights
Joan F Rachel is currently associated with Eastman Kodak Company, where she continues to innovate in the field of photography. Her work has not only advanced photographic technology but has also contributed to the development of environmentally friendly solutions in the industry.
Collaborations
Throughout her career, Joan has collaborated with esteemed colleagues, including Alan S Fitterman and Shirleyanne E Haye. These collaborations have further enriched her contributions to the field.
Conclusion
Joan F Rachel's innovative work in photographic developing compositions showcases her dedication to advancing technology in photography. Her patents reflect a commitment to both quality and environmental sustainability, making her a significant figure in her field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile