Patents by Inventor Herman Wissenberg

Herman Wissenberg 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).

  • In situ retorting with flame front-stabilizing layer of lean oil shale particles
    Patent number: 4435016
    Abstract: An in situ retort and process are provided for underground retorting of oil shale. The in situ retort is formed with at least one flame front-stabilizing layer of minute lean oil shale particles which serves as a redistribution region or grid. When the flame front is ignited and passed through the retort with a feed gas, the flame front-stabilizing layer will stabilize and enhance horizontal uniformity of the flame front to substantially minimize burning of the product shale oil.
    Type: Grant
    Filed: June 15, 1982
    Date of Patent: March 6, 1984
    Assignees: Standard Oil Company (Indiana), Gulf Oil Corp.
    Inventors: Herman Wissenberg, Earl D. York, Darrell D. Porter