Patents by Inventor Bjorn Olof Josefsson

Bjorn Olof Josefsson 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).

  • Apparatus for continuous liquid-liquid extraction of water with a solvent
    Patent number: 3996140
    Abstract: An apparatus for extracting dissolved substances from water by means of a solvent comprises an extraction vessel, a mixing container, open at the top, in the lower portion the extraction vessel, and stirring means in said mixing container. The extraction vessel contains a desired quantity of solvent. The water is added in a continuous flow and is mixed with the solvent. The lighter solvent phase rises to the top of the apparatus, while the heavier water phase is continuously withdrawn through an annular space between the mixing container and the wall of the extraction vessel.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: December 7, 1976
    Assignee: AB Tellusond
    Inventors: Bjorn Olof Josefsson, Martin Ahnoff