Patents by Inventor Gerald Engdahl

Gerald Engdahl 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).

  • APPARATUS AND METHOD FOR THE THERMAL EXTRACTION OF METALS
    Publication number: 20140191450
    Abstract: An apparatus and methods for removing metal from complex materials.
    Type: Application
    Filed: December 10, 2013
    Publication date: July 10, 2014
    Applicant: Global Metal Technologies LLC
    Inventors: Vaughn K. Boyman, Joseph A. Diaz, Gerald Engdahl, Thomas E. Stephens, Christopher E. Gordon
  • System and method for the thermal processing of ore bodies
    Patent number: 8043400
    Abstract: The Inventive System disclosed herein relates to an improved system for extracting metals from ore.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: October 25, 2011
    Inventors: Thomas E. Stephens, Vaughn K. Boyman, Joseph A Diaz, Christopher E. Gordon, Gerald Engdahl
  • Boil-off gas condensing assembly for use with liquid storage tanks
    Publication number: 20080034769
    Abstract: The assembly includes a boil-off gas line that carries storage tank boil-off gas to a condenser that uses condensing liquid from the liquid send-out line to condense the gas. A level control valve on the condensing liquid line actively controls the flow of condensing liquid based on the liquid level in the condenser. A check valve prevents liquid from the send-out line from flowing into the condenser through the condensate line that discharges condensate from the condenser to the send-out line.
    Type: Application
    Filed: August 11, 2006
    Publication date: February 14, 2008
    Applicant: Gerald E. Engdahl
    Inventor: Gerald Engdahl
  • Submerged combustion water heater
    Publication number: 20050103323
    Abstract: This invention discloses a submerged combustion apparatus and method for heating large quantities of water and other fluids in many applications. Water to be heated exits an orifice opening and flows across a perforated plate where the water is heated by products of combustion passing through apertures in the perforated plate. The low submergence, low backpressure heat and mass transfer arrangement provides an effective and efficient system for heating water and other fluids and concentrating water solutions.
    Type: Application
    Filed: October 8, 2004
    Publication date: May 19, 2005
    Inventor: Gerald Engdahl
  • Submerged combustion LNG vaporizer
    Publication number: 20050092263
    Abstract: This invention discloses a method and device for vaporizing LNG with a submerged combustion vaporizer. The submerged combustion LNG vaporizer uses spiral tube heat transfer circuits and a submerged combustion heat source for vaporizing LNG. The submerged combustion heat source has a unique low submergence heat and mass transfer arrangement for heating circulation water.
    Type: Application
    Filed: October 8, 2004
    Publication date: May 5, 2005
    Inventor: Gerald Engdahl
  • Spiral tube LNG vaporizer
    Publication number: 20050081535
    Abstract: This invention relates to a device for vaporizing LNG. A second aspect of the invention includes a method of vaporizing LNG. A third aspect of the invention includes utilizing a submerged combustion heat source for vaporizing LNG. The LNG vaporizer includes a plurality of LNG spiral tube circuits communicating to an inlet manifold and to an outlet manifold. The LNG spiral tube circuits are positioned within a heating medium flow arrangement annular space.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 21, 2005
    Inventor: Gerald Engdahl
  • Removal of carbon dioxide from a feed stream by carbon dioxide solids separation
    Patent number: 5819555
    Abstract: A process with few parts is provided to remove carbon dioxide from a feed stream. The solid forming property of carbon dioxide and the low vapor phase solubility of carbon dioxide at cold temperatures form the basis for the separation process. The cooled feed stream enters a separation vessel where process means are provided to produce and separate carbon dioxide solids. Carbon dioxide is removed from the vessel as a carbon dioxide rich liquid stream. Purified cold vapor is removed from the separation vessel as a product stream.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: October 13, 1998
    Inventor: Gerald Engdahl