Patents by Inventor Charles Ryan Parrish

Charles Ryan Parrish 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).

  • Sharpening system for scissors with complex curved blades
    Patent number: 8092279
    Abstract: A device and method of sharpening hair cutting scissor blades passes a blade over the perimeter portion of a flexible sharpening pad to flex the perimeter portion out of the plane of the pad. The blade is held in an angled orientation over the pad and is moved horizontally and downward during the sharpening motion. Independent horizontal and vertical movements allow addressing irregularly shaped blades including blades with a radial shape and convex blades.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: January 10, 2012
    Inventor: Charles Ryan Parrish
  • Sharpening system for scissors with complex curved blades
    Publication number: 20100203810
    Abstract: A device and method of sharpening hair cutting scissor blades passes a blade over the perimeter portion of a flexible sharpening pad to flex the perimeter portion out of the plane of the pad. The blade is held in an angled orientation over the pad and is moved horizontally and downward during the sharpening motion. Independent horizontal and vertical movements allow addressing irregularly shaped blades including blades with a radial shape and convex blades.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 12, 2010
    Inventor: Charles Ryan Parrish