Patents by Inventor John E. Cottle

John E. Cottle 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).

  • Gasification process with zinc condensation on the carbon source
    Patent number: 4070160
    Abstract: In a process for gasifying solid carbon sources such as coal utilizing zinc oxide as the oxygen donor, the carbon source is first contacted in a preheat zone with product gas; any zinc in this product gas is condensed on the carbon source; the preheated carbon source and zinc are then exposed to steam whereby the zinc is oxidized to zinc oxide; the mixture of zinc oxide and carbon source finally is reacted at elevated temperature conditions to form a gas comprising carbon monoxide and zinc.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: January 24, 1978
    Assignee: Phillips Petroleum Company
    Inventor: John E. Cottle
  • Gas recovery from hydrate reservoirs
    Patent number: 4007787
    Abstract: Natural gas is recovered from gas hydrate reservoirs by passing light hydrocarbons, which do not form hydrates at reservoir conditions, through the formation to dissolve and recover the natural gas. A freezing point depressant can also be injected into the reservoir to accelerate development of production.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: February 15, 1977
    Assignee: Phillips Petroleum Company
    Inventor: John E. Cottle