Patents by Inventor Leif R. Borjesson

Leif R. Borjesson 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).

  • Spiral heat exchanger
    Patent number: 4128125
    Abstract: A spiral heat exchanger comprises a generally cylindrical spiral body having two parallel, spirally-shaped flow passages for heat exchanging media. An end wall is releasably connected to the spiral body at each end thereof, the spiral body and at least one end wall being movable along a track and independently rotatable around a vertical axis.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: December 5, 1978
    Assignee: Alfa-Laval AB
    Inventors: Leif R. Borjesson, Lars-Ake Johansson