Patents by Inventor Juhani Hoikkala

Juhani Hoikkala 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).

  • Falling film evaporator
    Patent number: 5837096
    Abstract: A falling film evaporator includes a shell with a number of heat transfer elements within the shell. Each heat transfer element has two opposed essentially rectangular plates joined together along upright sides and along seams substantially parallel to the upright sides. The seams form with each other, and the upright sides, a number of vertical flow channels through which steam (heating fluid) flows in the interior of the heat transfer elements to evaporate evaporable liquid flowing downwardly in a film over the outer surfaces of the heat transfer plates.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: November 17, 1998
    Assignee: Ahlstrom Machinery Oy
    Inventors: Olof Fagerlind, Juhani Hoikkala, Krister Sannholm, Ake Schonberg, Erik Agren