Patents by Inventor William L. Embry

William L. Embry 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).

  • Formation of hydroxy aryl carboxylic acids and esters
    Patent number: 4827845
    Abstract: Hydroxy aryl carboxylic acids are formed by reacting a hydroxy aryl compound, such as phenol, with a ketone, such as acetone and carbon monoxide in the presence of a strong acid. The preferred embodiment is the one step formation of 2-methyl-2-(p-hydroxyphenyl) propionic acid from phenol, acetone and carbon monoxide in the presence of hydrofluoric acid. When this reaction is conducted in the presence of methanol the corresponding methyl ester is formed.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: May 9, 1989
    Assignee: Ashland Oil, Inc.
    Inventors: Dace Grote, William L. Embry, Kenneth W. Barnett