Patents by Inventor Reijo Ilmanen

Reijo Ilmanen 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).

  • Patent number: 5009016
    Abstract: A method for contact-free drying of a paper or board web or of any other corresponding continuous web. During drying, both infrared radiation and drying air jets are used. The web is carried by the air jets through the dryer free of contact. The moving web is first passed into an infrared drying gap, in which a drying energy pulse of relatively short duration is directed at the web, the power of the energy pulse being substantially higher than the average drying power of the dryer per unit of area. After the infrared drying gap, the web is immediately passed into an airborne web drying gap wherein the web is supported and dried by means of air jets. Air is brought into the infrared unit, which air having been heated in the infrared unit is passed as replacement air and/or drying air for the airborne web drying unit or units placed after the infrared unit.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: April 23, 1991
    Assignee: Valmet Oy
    Inventors: Matti LePisto, Reijo Ilmanen, Markku Karlsson, Sauli Laakso