Patents by Inventor Joseph A. Chartrand

Joseph A. Chartrand 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: 4353845
    Abstract: A gas scrubber particularly adapted to purify a gas obtained by vaporization of a fluidizing content of wet organic wastes, comprising an upstream precipitation duct section and a downstream sedimentation section with water jets to enhance precipitation in the upstream duct section.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: October 12, 1982
    Inventors: Joseph A. Chartrand, Irenee Perreault
  • Patent number: 4351250
    Abstract: This defines a process and an apparatus to treat wet organic wastes, such as manures, to protect the environment and to recycle the solid content in the form of a soil conditioner or fertilizer. This process and apparatus are made to remove the bad smell and to separate the solid content in a very dry form, adapted to be readily bagged. This process and apparatus are characterized by an efficient conveying and concurrent agitation of the organic wastes in an evaporation furnace and in combination with use of the combustion gases for heat exchange heating of the fluidizing content of the wet organic wastes.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: September 28, 1982
    Inventors: Joseph A. Chartrand, Irenee Perreault