Mahtomedi, MN, United States of America

Darlene F Stewart

This inventor holds 2 USPTO granted patents. Top assignee: Eastman-Kodak Company. Active years: 2002-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Darlene F Stewart. Retrieved from https://idiyas.com/inventor/darlene-f-stewart

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 50.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2002-2003

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2 patents (USPTO):Explore Patents

Title: Darlene F Stewart: Innovator in Photothermographic Technology

Introduction

Darlene F Stewart is a notable inventor based in Mahtomedi, MN (US). She has made significant contributions to the field of photothermographic technology, holding 2 patents that showcase her innovative spirit and technical expertise.

Latest Patents

One of her latest patents is a photothermographic element with reduced woodgrain interference patterns. This invention provides a spectrally sensitized photothermographic silver halide element that comprises a support layer with a photothermographic composition. This composition displays uniform image density across its surface when exposed to floodlight or uniform incandescent light. The element consists of at least two layers, including a top layer and a photothermographic emulsion layer. The emulsion layer includes a binder, a light-insensitive silver source, a reducing agent for silver ion, and infrared radiation-sensitive silver halide grains. The coherent radiation is rendered more diffuse in its passage through the element than when it strikes the top layer. This is achieved through various methods, including surface modification of the top layer, inducing haze in the silver halide layer, and altering the reflective characteristics of the support layer.

Career Highlights

Darlene F Stewart has had a distinguished career at Eastman Kodak Company, where she has been able to apply her innovative ideas in practical applications. Her work has significantly impacted the field of imaging technology, particularly in enhancing the quality and efficiency of photothermographic elements.

Collaborations

Throughout her career, Darlene has collaborated with notable colleagues, including Thomas C Geisler and Thomas J Kub. These collaborations have further enriched her work and contributed to the advancements in the technologies she has developed.

Conclusion

Darlene F Stewart is a pioneering inventor whose contributions to photothermographic technology have made a lasting impact. Her innovative patents and career at Eastman Kodak Company highlight her dedication to advancing imaging technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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