Edward E Ehlinger

Title: The Innovations of Edward E. Ehlinger

Introduction

Edward E. Ehlinger is a notable inventor based in Cincinnati, OH, who has made significant contributions to the field of chemistry. He holds two patents that showcase his innovative work with fluorans and their applications in marking systems. His inventions have practical implications, particularly in pressure-sensitive carbonless duplicating systems.

Latest Patents

Ehlinger's latest patents focus on the development of fluorans, specifically 2- and/or 6-pyridylethylamino-substituted fluorans. These compounds are particularly useful as color formers in various marking systems. The preparation of these fluorans involves intricate chemical interactions, such as the reaction of (pyridylethylaminophenyl)carbonylbenzoic acids with 4-hydroxy- or alkoxyanilines. Additionally, the intermediates required for these fluorans are synthesized through the interaction of N-pyridylethyl-3-hydroxyaniline with phthalic anhydride.

Career Highlights

Throughout his career, Edward E. Ehlinger has worked with prominent companies, including Hilton-Davis Chemical Company and Sterling Drug Inc. His experience in these organizations has contributed to his expertise in chemical innovations and patent development.

Collaborations

Ehlinger has collaborated with various professionals in his field, including his coworker William M. Hung. These collaborations have likely enhanced his research and development efforts, leading to successful patent applications.

Conclusion

Edward E. Ehlinger is a distinguished inventor whose work in the field of fluorans has led to valuable patents and advancements in marking systems. His contributions continue to influence the industry and demonstrate the importance of innovation in chemistry.