Patents by Inventor Ake K. Persson

Ake K. Persson 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).

  • Corrosion resistant heat exchanger
    Patent number: 4147209
    Abstract: A metallic heat exchanger for heat transfer between a first medium flowing in tubes and a second medium flowing about the tubes and within an outer housing, the device including internal walls which divide the housing into three chambers with outlets and inlets to define a single continuous passage, the tubes extending through the chambers such that counter-flow heat exchange occurs in the first chamber, parallel flow heat exchange in the second chamber, and counter-flow heat exchange in the third chamber.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: April 3, 1979
    Assignee: SKF Industrial Trading and Development Company B.V.
    Inventor: Ake K. Persson