Patents by Inventor Tage Abrahamsson

Tage Abrahamsson 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).

  • Filter means
    Patent number: 4274960
    Abstract: A filter apparatus for separating particles of oil from waste water comprises a housing having an inlet and an outlet and a filter element arranged therebetween. The filter element is in the form of a self-supporting body comprising small pieces of soft foamed plastic material having open cells. The foamed plastic material has been subjected to mechanical, non-disintegrating pressure shocks of a magnitude sufficient to rupture the cell walls. Thereafter the pieces are joined together under pressure by means of a bonding agent.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: June 23, 1981
    Assignee: Metzeler AB
    Inventor: Tage Abrahamsson