Patents by Inventor Walter Albert Butte, Jr.

Walter Albert Butte, Jr. 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).

  • Hydrogenation of phthalonitriles using rhodium catalyst
    Patent number: 3998881
    Abstract: A process for the preparation of 1,3 or 1,4-bis (aminomethyl)cyclohexane by hydrogenating a solvent solution of iso- or terephthalonitrile at a temperature between about 50.degree. and about 150.degree. C., at a pressure of between about 500 and about 1500 psig., and in the presence of a supported rhodium catalyst.
    Type: Grant
    Filed: November 13, 1974
    Date of Patent: December 21, 1976
    Assignee: Sun Ventures, Inc.
    Inventors: Walter Albert Butte, Jr., William J. Murtaugh