Patents by Inventor Robert L. Wynn

Robert L. Wynn 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).

  • Benzylic oxidation and catalyst therefor
    Patent number: 5280001
    Abstract: Oxidation of alkylaromatics having a benzylic hydrogen atom is catalyzed by a catalyst comprising a palladium salt, a metal persulfate, a third metal salt, and a tin salt in a carboxylic acid for a period of time sufficient to convert the alkylaromatics to their corresponding oxidized derivatives. The catalyst is prepared by preheating the palladium salt and the metal persulfate at a temperature sufficient to provide the desired catalytic activity followed by addition of the third metal salt and the tin salt.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: January 18, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Chung C. Tso, Robert L. Wynn
  • Benzylic oxidation and catalyst therefor
    Patent number: 5183931
    Abstract: Oxidation of alkylaromatics having a benzylic hydrogen atom is catalyzed by a catalyst comprising a palladium salt, a metal persulfate, a third metal salt, and a tin salt in a carboxylic acid for a period of time sufficient to convert the alkylaromatics to their corresponding oxidized derivatives. The catalyst is prepared by preheating the palladium salt and the metal persulfate at a temperature sufficient to provide the desired catalytic activity followed by additon of the third metal salt and the tin salt.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: February 2, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Chung C. Tso, Robert L. Wynn