Patents by Inventor Stephen L. Koontz

Stephen L. Koontz 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).

  • Method and apparatus for cooling thermally cracked hydrocarbon gases
    Patent number: 4397740
    Abstract: The flow of cracked gases, for example, from an ethylene plant through the tubes of a transfer line heat exchanger is equalized by employing larger cross-section tubes in the outer portion of the exchanger and smaller cross-section tubes in the inner portion of the exchanger thereby preventing, or substantially minimizing, build-up of coke deposits in the exchanger, especially in the inlets of the tubes in the outer portion where coke formation conventionally occurs.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 9, 1983
    Assignee: Phillips Petroleum Company
    Inventor: Stephen L. Koontz