Patents by Inventor Sven A. Nordfeldt

Sven A. Nordfeldt 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 refining solid fuel of organic vegetable material
    Patent number: 4229183
    Abstract: A method for refining organic material such as bark, wood shavings, wood chips, other wood waste and peat for use as a solid fuel or for gas generation in which the material after dewatering is disintegrated and dried by the flue gases passing from the heat exchange surfaces of the furnace in which the material is burned.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: October 21, 1980
    Assignee: AB Svenska Flaktfabriken
    Inventors: Jan-Mats Eneroth, Sven A. Nordfeldt