Patents by Inventor Frederick R. Raphael

Frederick R. Raphael 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).

  • Self cleaning tribological coated tobacco and herb grinders
    Patent number: 9521929
    Abstract: A tobacco and herb grinder suitable for grinding many dried plant products, having two interfacing sets of knives or pins with low friction omniphobic coated parts that inhibit the adherence of plant material buildup. The grinder inhibits the accumulation of resins or oils and, thus reduces or eliminates binding and the necessity for removing debris by use of a particular combination of knife blades and coatings.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 20, 2016
    Inventor: Frederick R. Raphael