Patents by Inventor Johan E. P. Sjoholm

Johan E. P. Sjoholm 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).

  • Tubular heat-exchanger
    Patent number: 4298057
    Abstract: In a cross flow tubular heat exchanger the tubes are arranged in a space between two concentrically, imaginary cylinders. Radially extending baffle plates ensure that the heat exchanging medium flowing outside the tubes and perpendicular to their direction will pass the central cylindrical space without tubes.
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: November 3, 1981
    Assignee: Kommanditbolaget United Stirling AB & CO
    Inventors: Yngve R. Kihlberg, Johan E. P. Sjoholm