Patents by Inventor Erik L. Markoo

Erik L. Markoo 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).

  • Flexible coated abrasive with graphite outer layer
    Patent number: 3992178
    Abstract: A flexible abrasive article carries a layer of particles of electroconductive material on the outer surface of the abrasive side to reduce the buildup of electrostatic charge during use in sanding wood or grinding metal. Metallic and non-metallic electroconductive materials may be employed.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: November 16, 1976
    Assignee: Fabrika AB EKA
    Inventors: Erik L. Markoo, Hans S. Ekblom, Torsten Wilhelm Sandell