Patents by Inventor Osmo Holopainen

Osmo Holopainen 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).

  • Apparatus for drying and heating material in a rotary kiln
    Patent number: 4753019
    Abstract: An apparatus for drying and heating lime sludge in a rotary kiln by means of regenerative heat transfer. The apparatus is preferably formed of round or rounded rods which extend parallel to the longitudinal axis. The rods are disposed in the kiln in an annular region adjacent the housing wall so that lime sludge flows freely between the rods while the kiln is rotating.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: June 28, 1988
    Assignee: A. Ahlstrom Corporation
    Inventor: Osmo Holopainen