Patents by Inventor Ernst H. Ruhl

Ernst H. Ruhl 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).

  • `Borner` rootstock grape
    Patent number: PP9575
    Abstract: Rootstock variety `Borner` is a cross between Vitis riparia 183G.times.Vitis cinerea Arnold. The new variety was obtained by traditional grapevine crossbreeding techniques. The basic idea for the choice of the two breeding partners was to combine the positive viticultural characteristics of Vitis riparia with the complete phylloxera resistance potential of Vitis cinerea.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: June 11, 1996
    Inventor: Ernst H. Ruhl