Patents by Inventor Robert Phillip Johnson

Robert Phillip Johnson 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).

  • Preparation of halogenated nitriles
    Patent number: 3941827
    Abstract: A process is disclosed for preparing halogenated hydrocarbyl nitriles comprising reacting a metal or ammonium cyanide with a dihalogenated aliphatic or alicyclic hydrocarbon of the formulaX--R--CH.sub.2 --X.sub.1where X and X.sub.1 are chloro, bromo or iodo and R is a divalent aliphatic, alicyclic or aralkyl hydrocarbon group,In an aqueous medium in the presence of a phase transfer catalyst.
    Type: Grant
    Filed: February 4, 1974
    Date of Patent: March 2, 1976
    Assignee: Michigan Chemical Corporation
    Inventor: Robert Phillip Johnson