Patents by Inventor Robert Stephan Hannecart

Robert Stephan Hannecart 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).

  • Device for mixing gases and liquids
    Patent number: 4117047
    Abstract: A device for mixing liquids and gases comprising a fan stage above and connected to a distribution stage. The fan stage comprises a plate with blades and a central aperture. The distribution stage comprises a plate, preferably concave with the concavity facing upwards, having a central aperture which is disposed just above or at the level of the liquid. A motor spins both stages. A pipe may be extended from the aperture of the distribution stage down into the liquid.
    Type: Grant
    Filed: October 21, 1977
    Date of Patent: September 26, 1978
    Inventor: Robert Stephan Hannecart