Company Filing History:
7 out of 321 
2 out of 124 
Years Active: 1976-1994
Title: John A Scheben: Innovator in Catalysis
Introduction
John A Scheben is a notable inventor based in Erlanger, KY (US), recognized for his contributions to the field of catalysis. He holds a total of 9 patents, showcasing his innovative approach to chemical processes.
Latest Patents
One of his latest patents involves the pretreatment of palladium-gold catalysts useful in the synthesis of vinyl acetate. This method entails heating a virgin catalyst, which has been reduced to metallic palladium and gold, at elevated temperatures in the presence of an oxidizing agent such as air. After the oxidizing agent is withdrawn, an inert gas like nitrogen is introduced. The catalyst is then heated again at temperatures up to 500°C in the presence of a reducing agent such as hydrogen or ethylene. This process results in improvements in selectivity and yield.
Career Highlights
Throughout his career, John A Scheben has worked with prominent companies, including National Distillers and Chemical Corporation and Quantum Chemical Corporation. His work has significantly impacted the development of efficient catalytic processes.
Collaborations
Some of his notable coworkers include James A Hinnenkamp and David W Smith, who have contributed to his innovative projects.
Conclusion
John A Scheben's work in catalysis and his numerous patents reflect his dedication to advancing chemical processes. His innovative methods continue to influence the industry and enhance the efficiency of chemical synthesis.