Company Filing History:
1 out of 3,034 
1 out of 164,275 
Years Active: 1988-1992
Title: The Innovations of Dean S Ehn
Introduction
Dean S Ehn is a notable inventor based in Boulder, CO. He has made significant contributions to the field of electrophotography, holding 2 patents that showcase his innovative approach to technology. His work has been influential in the development of advanced photoconductors and fuser rolls.
Latest Patents
One of Dean's latest patents is titled "Electrophotographic photoconductor contains ordered copolyester." This invention describes a layered electrophotographic photoconductor that includes a ground plane layer, a charge generating layer, and a charge transport layer. The polymeric binder material used in these layers comprises an ordered copolyester-carbonate with specific weight percentages that enhance its performance. The charge generating molecule utilized is a squarylium compound, while the charge transporting molecule is a hydrazone, both of which contribute to the efficiency of the photoconductor.
Another significant patent is for a "Hot roll fuser and method of making a fuser roll." This invention features an electrophotographic fuser roll with a hard external surface that boasts low surface energy and high abrasion resistance. The surface is created by sequentially coating a metal roll with two layers of polymeric material, which undergoes a curing and polishing process to achieve optimal performance.
Career Highlights
Throughout his career, Dean S Ehn has worked with prominent companies such as Lexmark International, Inc. and International Business Machines Corporation (IBM). His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the field of electrophotography.
Collaborations
Dean has collaborated with notable coworkers, including James M Adley and Vernon M Balthis. Their combined expertise has likely fostered innovative ideas and advancements in their respective projects.
Conclusion
Dean S Ehn's contributions to the field of electrophotography through his patents and career experiences highlight his role as a significant inventor. His work continues to influence advancements in technology, showcasing the importance of innovation in the industry.