Patents by Inventor Franklin B. Gupton

Franklin B. Gupton 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).

  • Process for preparing pyridine and quinoline derivatives
    Patent number: 5808067
    Abstract: The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives which can be dehydrated to 2-aminobut-2-ene dioic acid derivatives, which can be subsequently converted to pyridine and quinoline derivatives.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: September 15, 1998
    Assignee: Hoechst Celanese Corporation
    Inventors: John Saukaitis, Franklin B. Gupton
  • Method for preparing quinoline carboxylic acids and derivatives thereof
    Patent number: 5430152
    Abstract: A method of preparing substituted and unsubstituted 1,4-dihydro-4-oxo-2 and -3 quinolinic carboxylic acids which comprises heating an ester selected from the group consisting of substituted and unsubstituted anilinomethylenemalonates, anilinofumurates, anilinomaleates and mixutres thereof in the presence of chlorosulfonic acid, oleum and mixtures thereof.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: July 4, 1995
    Assignee: Hoechst Celanese Corporation
    Inventors: John C. Saukaitis, Franklin B. Gupton