Patents by Inventor Raymond L. Cobb

Raymond L. Cobb 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).

  • Conversion of lactams to alkenenitriles
    Patent number: 3956356
    Abstract: A process is provided for the conversion of lactams to the corresponding aminonitriles and alkenenitriles comprising contacting the lactam with ammonia in the presence of a catalyst in a first reaction zone to form the corresponding aminonitrile and a byproduct polymeric material, and contacting the byproduct in the presence of gamma-alumina, a second catalyst, in a second reaction zone to form the corresponding isomeric alkenenitriles. The aminonitrile and the alkenenitriles are both recovered as products of the process.
    Type: Grant
    Filed: October 7, 1970
    Date of Patent: May 11, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Raymond L. Cobb
  • Pyrolysis of N-substituted-1-cyclohexene-1,2-dicarboximides
    Patent number: 3932457
    Abstract: Pyrolysis of N-substituted-1-cyclohexene-1,2-dicarboximide gives N,N'-substituted-pyromellitdiimides. Pyrolysis of N-substituted-1-cyclohexene-1,2-dicarboximide in the presence of N-substituted maleimides produces N,N'-substituted-3,4,5,6-tetrahydropyromellitdiimide and the Diels-Alder dimer of N-substituted-1,3-butadiene-2,3-dicarboximide.
    Type: Grant
    Filed: May 16, 1973
    Date of Patent: January 13, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Raymond L. Cobb