Patents by Inventor Patrick Michael Conrath

Patrick Michael Conrath 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 the recovery of acrylonitrile and methacrylontrile
    Patent number: 6107509
    Abstract: The process of manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising transporting a reactor effluent containing the unsaturated mononitrile to a first column where the reactor effluent is cooled with at least one aqueous stream, transporting the cooled effluent containing the unsaturated mononitrile into a second column where the cooled effluent is contacted with at least one second aqueous stream to absorb the unsaturated mononitrile into at least one second aqueous stream, transporting the second aqueous stream containing the unsaturated mononitrile from the second column to a first distillation column for separation of the crude unsaturated mononitrile from the second aqueous stream, and transporting the separated crude unsaturated mononitrile to a second distillation column to remove at least some impurities from the crude mononitrile, and transporting the partially purified crude unsaturated mononitrile to a third distillation column
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: August 22, 2000
    Assignee: The Standard Oil Company
    Inventors: Michael Keith Hagans, Sanjay Purushottam Godbole, Patrick Michael Conrath, Donald Eugene Meihls