Patents by Inventor Annette Kramer

Annette Kramer 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 and plant for purification of metals from water
    Patent number: 6355172
    Abstract: The present invention is related to a purification method metal(s) containing water wherein: the process is fully continuous, the water flows through a sand filter, inoculated with viable micro-organisms, a part of the micro-organism biomass, loaded with metals, is evacuated, and the micro-organism biomass loss is equal to the micro-organism biomass growth.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: March 12, 2002
    Assignee: Vlaamse Instelling Voor Technologisch Onderzoek (VITO)
    Inventors: Ludo Diels, Sandra Van Roy, Piet Hein Spaans, Hans Wouters, Annette Kramer