Patents by Inventor J. R. Durrwachter

J. R. Durrwachter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Production of aryl ethanols
    Patent number: 5254753
    Abstract: The invention provides a process for preparing aryl ethanols from aryl methyl ketones. The process involves a novel oxidation of the ketone to a dialkylacetal derivative of an aryl glyoxal, which is then hydrolyzed to an aryl glyoxal. The aryl glyoxal is then catalytically hydrogenated to reduce both carbonyl groups simultaneously to yield the aryl ethanol.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: October 19, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: J. R. Durrwachter, G. N. Mott, H. Ramos, Jr., Ahmed Tafesh