Patents by Inventor Dale R. Simpson

Dale R. Simpson 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 of removing mercury from exhaust gases
    Patent number: 6962617
    Abstract: Efficient removal of mercury from the exhaust gases of an industrial process or combustion process can be achieved using an adsorbent that can be regenerated by a simple and efficient method. The mercury is contacted with a sorbent material, the sorbent material being hydrogen mordenite or hydrogen clinoptilolite, for adsorbing mercury and causing the mercury to react with the sorbent material to produce mercury-laden sorbent material. The mercury-laden sorbent material can be heated to a temperature of at least about 400° C. so as to remove mercury from the mercury-laden sorbent material and to regenerate the sorbent material to allow reusing of the sorbent material for mercury removal.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: November 8, 2005
    Assignee: Lehigh University
    Inventor: Dale R. Simpson
  • Method for the continuous destruction of ozone
    Patent number: 5951957
    Abstract: A process is provided for continuously decomposing ozone in the presence of water or water vapor by contacting the ozone containing gas with a zeolite, such as mordenite, dealuminized mordenite, zeolite Y or zeolite 13 X, at a temperature at which water or water vapor is not sorbed by the zeolite, such as 128 to 175.degree. C.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: September 14, 1999
    Assignee: Competitive Technologies of PA, Inc.
    Inventor: Dale R. Simpson
  • Method for the destruction of methylene iodide
    Patent number: 5676914
    Abstract: A method is disclosed for decomposing methylene iodide, including the following steps: providing a hydrophobic sorbent zeolite, exposing the zeolite to methylene iodide in the presence of water or water vapor, so that the methylene iodide is adsorbed on the water, heating the zeolite to a first temperature of at least 100.degree. to decompose the methylene iodide, and heating the zeolite to a second temperature of at least 400.degree. to regenerate its sorbent characteristics.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: October 14, 1997
    Assignee: Competitive Technologies, Inc.
    Inventor: Dale R. Simpson
  • Process for removing sulfur oxides from a gas stream
    Patent number: 5223237
    Abstract: A process for removing the sulfur oxides from a gas stream by sorbing the sulfur oxide gases in a zeolite and subsequently purging the previously-sorbed sulfur oxide gases by exposing the zeolite to water or water vapor, which is preferentially sorbed on the zeolite. The zeolite is then regenerated by desorbing the water or water vapor from the zeolite. A gas stream having a reduced volume and an increased sulfur oxide gas concentration is isolated and directed to sulfur oxide removal and processing apparatuses.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: June 29, 1993
    Assignee: Lehigh University
    Inventors: Dale R. Simpson, Harvey G. Stenger
  • Mordenite and mordenite aggregate syntheses
    Patent number: 4935217
    Abstract: Mordenite, a synthetic zeolite, is produced by reaction of particulate volcanic glasses with limited amounts of strongly basic aqueous solutions at elevated temperature and autogenic pressure for approximately one day.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: June 19, 1990
    Assignee: Lehigh University
    Inventor: Dale R. Simpson