Patents by Inventor John E. Mrochek

John E. Mrochek 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).

  • Disc valve for sampling erosive process streams
    Patent number: 4562748
    Abstract: A four-port disc valve for sampling erosive, high temperature process streams. A rotatable disc defining opposed first and second sampling cavities rotates between fired faceplates defining flow passageways positioned to be alternatively in axial alignment with the first and second cavities. Silicon carbide inserts and liners composed of .alpha. silicon carbide are provided in the faceplates and in the sampling cavities to limit erosion while providing lubricity for a smooth and precise operation when used under harsh process conditions.
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: January 7, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: John E. Mrochek, Stanley R. Dinsmore, Edward W. Chandler
  • System for analyzing coal liquefaction products
    Patent number: 4446105
    Abstract: A system for analyzing constituents of coal-derived materials comprises three adsorption columns and a flow-control arrangement which permits separation of both aromatic and polar hydrocarbons by use of two eluent streams.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 1, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Stanley R. Dinsmore, John E. Mrochek