Patents by Inventor Harald Von Langsdorff

Harald Von Langsdorff 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: 5713173
    Abstract: A paving element has a body with oppositely directed major faces interconnected by a peripheral side wall. One of said major faces is generally planar and has at least one set of a plurality of predefined areas formed thereon. Adjacent areas of the set have a surface finish to provide a contrasting visual effect relative to other areas of the set. The finish and disposition of the areas is configured to provide a representation of abutting orthogonally disposed surfaces so that when a plurality of such sets is arranged in seriatim, a visual impression of stepped surfaces at different levels is provided.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: February 3, 1998
    Inventors: Harald Von Langsdorff, Fritz Von Langsdorff
  • Patent number: 5360285
    Abstract: A set of shaped stones for paving ground areas with wide gaps between the shaped stones is provided which comprises first and second shaped stones, with the second shaped stones having a smaller plan view area than the first shaped stones. A plurality of integral spacing projections are provided on the periphery of only one of the first and second shaped stones for defining the wide gaps in the shaped stone pavement.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: November 1, 1994
    Assignee: F. von Langsdorff Licensing Limited
    Inventors: Gunther Barth, Fritz von Lansdorff, Harald von Langsdorff
  • Patent number: 5342142
    Abstract: An angular paving stone (2) for paving areas, comprising two outer sides (16), two inner sides (18) and two face sides (20). At the five outer corners (4) of the angular paving stone (2) there are provided quarter recesses (22). At the center of the outer sides (16) of the angular paving stone (2) there are provided half recesses (24). At the inner corner (6) of the angular paving stone (2) there is provided a three-quarter recess (26). The partial recesses (22, 24, 26) supplement each other in the paved area so as to form full recesses (38) for water discharge.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: August 30, 1994
    Assignee: F. von Langsdorff Licensing Limited
    Inventors: Gunther Barth, Fritz von Langsdorff, Harald von Langsdorff
  • Patent number: D510443
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: October 4, 2005
    Assignee: F. Von Langsdorff Licensing Limited
    Inventor: Harald Von Langsdorff
  • Patent number: D391647
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: March 3, 1998
    Inventors: Harald von Langsdorff, Fritz von Langsdorff
  • Patent number: D396901
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: August 11, 1998
    Assignee: F. von Langsdorff Licensing Limited
    Inventor: Harald von Langsdorff
  • Patent number: D399978
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: October 20, 1998
    Assignee: F. Von Langsdorff Licensing Limited
    Inventors: Gunther Barth, Fritz Von Langsdorff, Harald Von Langsdorff
  • Patent number: D417514
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: December 7, 1999
    Assignee: F. Von Langsdorff Licensing Ltd.
    Inventors: Harald Von Langsdorff, Fritz Von Langsdorff