Patents by Inventor Harry Whittaker

Harry Whittaker 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).

  • Patent number: 5919982
    Abstract: A process and apparatus for the removal of aromatic amines from soil and water is described. In particular, treatment trains are described in which soil washing or low temperature desorption process effect removal of contaminant, such as xylidines from soil and steam stripping is utilized to remove contaminant from water. Further treatment through organic acid precipitation and advanced oxidation produce clean water and precipitated salts which may be recovered.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 6, 1999
    Assignee: Her Majesty the Queen in right of Canada, as represented by Environment
    Inventors: Harry Whittaker, Valdis Kokars, Janis Avotins, Laura Ouellette
  • Patent number: 5556545
    Abstract: The removal of arsenic, from aqueous liquids by adsorption on alumina, is facilitated by selecting the alumina adsorbent to have a particle size below about 200 micrometers, forming a slurry of the alumina and aqueous liquid and agitating the slurry. It has been found that alumina can be selected to have a particle size sufficiently small, or preferably a combination of both particle size sufficiently small and pore size and number sufficiently large, to achieve 50 ppb or less arsenic within about 2 hours treatment. The alumina with adsorbed arsenic is separated from the slurry by steps preferably comprising microfiltration. A precipitation pretreatment can be combined with the slurry treatment e.g. to handle more concentrated solutions.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: September 17, 1996
    Assignee: Her Majesty the Queen in right of Canada, as represented by The Secretary of State for the Environment
    Inventors: Konstantin Volchek, Saviz Mortazavi, Harry Whittaker