Patents by Inventor H. Ed Hohrein

H. Ed Hohrein 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).

  • Treatment system for aircraft toilet waste water
    Patent number: 6143185
    Abstract: A system is described for the treatment of aircraft toilet waste water to permit discharge of the treated water to the atmosphere during flight, utilizing the pressure differential that is created between the aircraft's cabin pressure and the external atmosphere. The system includes a filter to remove suspended solids and other contaminants from the waste water, and may also include means to purify the water to potable water standards and means to recirculate the treated water for reuse on the aircraft.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: November 7, 2000
    Assignee: Thomas R. Tracy
    Inventors: Thomas R. Tracy, H. Ed Hohrein
  • Treatment method and system for aircraft toilet waste water
    Patent number: 5980756
    Abstract: A method and system are described for the treatment of aircraft toilet waste water to permit discharge of the treated water to the atmosphere during flight, utilizing the pressure differential that is created between the aircraft's cabin pressure and the external atmosphere. The system includes a filter to remove suspended solids and other contaminants from the waste water, and may also include means to purify the water to potable water standards and means to recirculate the treated water for re-use on the aircraft.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: November 9, 1999
    Inventors: Thomas R. Tracy, H. Ed Hohrein