Patents by Inventor Didier Roumens

Didier Roumens 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).

  • Devices for fermentation of organic refuse and slurries
    Patent number: 4226832
    Abstract: Silo apparatus for fermenting organic material into compost in which the organic material is gravity fed into a vertical compartment and taken out through an extractor compartment. Gas is fed upwardly through the material and a separator means is provided having variable size openings to control the passage of the material from the upper compartment to the extractor compartment.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: October 7, 1980
    Inventor: Didier Roumens