Patents by Inventor Jukka Lehtinen

Jukka Lehtinen 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).

  • Method of drying a cardboard or a paper web and drying device for applying this method
    Patent number: 4112586
    Abstract: A method of drying a cardboard or a paper web by passing the wet web supported by a drying band between two moving, nonpermeable surface elements having good heat conducting properties. The surface element contacting the web is subjected to heating and the surface element contacting the drying band is subjected to cooling. Due to the heating of the web the water contained therein is caused to evaporate and the evaporated water is caused to condense into the drying band due to the cooling of the drying band. The water is removed from the drying band after the web and the drying band have left the surface elements and have been separated from each other.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: September 12, 1978
    Assignee: Oy. Tampella AB
    Inventor: Jukka A. Lehtinen