Patents by Inventor Jan Rydgren

Jan Rydgren 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).

  • Corkscrew
    Patent number: 5031486
    Abstract: Corkscrew comprising a handle and a helically-shaped screw part, where the helically-shaped part (2) being formed is extended spirally, having its smallest diameter near the handle, and being flat with the outside aligning with a conical envelope surface, the terminating end (3) remote from the handle also being flat but being arranged radially and perpendicularly to the center axis of the corkscrew, the screw part having decreasing diameter toward the end (3) from the point where the screw part is twisted from a position aligned with the conical surface, to a position perpendicular to the center axis, and a center peg (1) being secured to the handle, concentric to the screw part (2).
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: July 16, 1991
    Assignee: Rydgren Promotion A/S
    Inventor: Jan Rydgren
  • Combination golf tool
    Patent number: D829290
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: September 25, 2018
    Inventor: Jan Rydgren