Patents by Inventor Søren Rykaer

Søren Rykaer 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).

  • Method for biological purification of waste water by the activated sludge method and apparatus for carrying out the method
    Patent number: 6290849
    Abstract: A method and an apparatus for biological purification of waste water by the activated sludge method, whereby the waste water is continuously passed through several treatment zones in which the waste water is successively subjected to nitrification and denitrification. The treatment zones are arranged circularly around a supply zone for waste water, whereby the supply zone is alternatingly connected with one of the treatment zones, and optionally a clarification zone for dividing the treated waste water into a water fraction and a sludge fraction.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: September 18, 2001
    Assignee: Kruger A/S
    Inventors: Søren Rykaer, Gert Petersen