Patents by Inventor Karl B. V. Johansson

Karl B. V. Johansson 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).

  • Plate heat exchanger
    Patent number: 4377204
    Abstract: Each plate of the heat exchanger has the usual groove for receiving a gasket; but the latter is secured to the plate at fastening points spaced from each other and located outside the sealing area defined by the groove.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: March 22, 1983
    Assignee: Alfa-Laval AB
    Inventor: Karl B. V. Johansson