Patents by Inventor Bjorn Fagerhaug

Bjorn Fagerhaug 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).

  • Procedure and device for rapid composting of organic waste
    Patent number: 4028189
    Abstract: Organic waste is composted whereby it is brought into repeated sliding layer contact with an air current. This contact is provided for in an inclined, rotating cylinder.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: June 7, 1977
    Assignee: Kvaerner Brug A/S
    Inventors: Bjorn Fagerhaug, Karl Oberg