Patents by Inventor Knut H. Johansen

Knut H. Johansen 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 for reinforcing and repairing equipment parts and components subjected to heavy abrasive wear
    Patent number: 5388317
    Abstract: The method is accomplished by having a casing affixed about the area of the equipment component or part subject to the abrasive wear. A wear-resistant concrete material is cast into the spacing between the casing and the surface of the equipment. A wear-resistant ceramic plate or steel plate can also be affixed to the surface of the equipment prior to casting the concrete in place.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: February 14, 1995
    Assignee: Elkem a/s
    Inventors: Knut H. Johansen, Oyvind Larsen, Hans H. Schelderup