Patents by Inventor Billy M. Culberton

Billy M. Culberton 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).

  • Copolymerization of bisoxazoline and polyphenolic compound with a hydrocarbon halide catalyst
    Patent number: 4843143
    Abstract: An improved process for increasing the rate of the copolymerization of mixtures of polyphenolic compounds having more than two phenolic hydroxyl groups per molecule and bis-oxazolines comprising carrying out the copolymerization in the presence of a catalytic amount of a halohydrocarbon at a temperature in the range of from about 130.degree. C. to 150.degree. C. is described.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: June 27, 1989
    Assignee: Ashland Oil, Inc.
    Inventors: Billy M. Culberton, Omar Tiba