Patents by Inventor Otfried von Kries

Otfried von Kries 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).

  • Artificial turf with playing field markings
    Patent number: 4755401
    Abstract: The invention relates to a ground covering in the form of an artificial turf material with lasting playing field marking lines. In accordance with the invention, the marking lines are formed by separately manufactured material strips and attached to the adjacent turf material using the elements of a hook and loop fastener.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: July 5, 1988
    Assignee: J. F. Adolff AG
    Inventors: Hans-Joachim Friedrich, Otfried von Kries