Patents by Inventor Dwight W. Zwick

Dwight W. Zwick 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 converting oil shale into petroleum
    Patent number: 7264711
    Abstract: A process for converting oil shale into petroleum is disclosed. The process includes the steps of pulverizing oil shale to produce pulverized oil shale and then preparing a mixture of pulverized oil shale, water and ethyl alcohol in a sealed vessel. The mixture in the sealed vessel is then heated to a temperature of at least about 465° F. for a period of time which is sufficient to cause the oil shale and ethyl alcohol to combine to produce a second mixture of petroleum and water. The water is then separated from the petroleum.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: September 4, 2007
    Inventor: Dwight W. Zwick
  • Process for converting oil shale into petroleum
    Publication number: 20030080029
    Abstract: A process for converting oil shale into petroleum is disclosed. The process includes the steps of pulverizing oil shale to produce pulverized oil shale and then preparing a mixture of pulverized oil shale, water and ethyl alcohol in a sealed vessel. The mixture in the sealed vessel is then heated to a temperature of at least about 465° F. for a period of time which is sufficient to cause the oil shale and ethyl alcohol to combine to produce a second mixture of petroleum and water. The water is then separated from the petroleum.
    Type: Application
    Filed: August 16, 2002
    Publication date: May 1, 2003
    Inventors: Dwight W. Zwick, Randy W. Woods