Patents by Inventor Ristomatti Ratia

Ristomatti Ratia 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).

  • Patent number: 5558307
    Abstract: A hook for hanging clothing, towels or other articles. The hook includes an enlarged rigid base secured to a wall or other vertical surface. A rigid rod extends from the base to a free end having a reduced diameter. A friction knob is mounted upon this reduced diameter section. The friction knob takes the form of a sheath which surrounds the free end of the rod. A plurality of circumferential ribs extend from the exterior of the sheath at locations spaced along its longitudinal axis. The free ends of the ribs are arranged along the axis such that the ribs, and thus the exterior of the knob, take an ellipsoidal form having a relatively large size. This relatively large size reduces wrinkling and "bulging" in the article hung upon the hook. The knob is formed of a flexible material having a relatively high coefficient of friction.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: September 24, 1996
    Assignee: Lynk, Inc.
    Inventors: Richard B. Klein, Chris Serslev, Ristomatti Ratia
  • Patent number: D447256
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: August 28, 2001
    Assignee: Design Ideas, Ltd.
    Inventor: Ristomatti Ratia
  • Patent number: D453086
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: January 29, 2002
    Assignee: OPA Oy
    Inventor: Ristomatti Ratia
  • Patent number: D460540
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: July 16, 2002
    Assignee: Saunatec Oyj
    Inventor: Ristomatti Ratia
  • Patent number: D460541
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: July 16, 2002
    Assignee: Saunatec Oyj
    Inventor: Ristomatti Ratia
  • Patent number: D277437
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: February 5, 1985
    Inventors: Ristomatti Ratia, Jukka Lehtio
  • Patent number: D357084
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: April 4, 1995
    Assignee: Design Ideas, Ltd.
    Inventors: Ristomatti Ratia, Lance Friedman
  • Patent number: D357085
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: April 4, 1995
    Assignee: Design Ideas, Ltd.
    Inventor: Ristomatti Ratia
  • Patent number: D361632
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: August 22, 1995
    Assignee: Design Ideas, Ltd.
    Inventor: Ristomatti Ratia
  • Patent number: D388892
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: January 6, 1998
    Assignee: Design Ideas Ltd.
    Inventor: Ristomatti Ratia
  • Patent number: D665482
    Type: Grant
    Filed: December 10, 2011
    Date of Patent: August 14, 2012
    Inventor: Ristomatti Ratia
  • Patent number: D427338
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: June 27, 2000
    Assignee: Design Idea, Ltd.
    Inventor: Ristomatti Ratia