Patents by Inventor Andreas Schultze-Kraft

Andreas Schultze-Kraft 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).

  • Artificial stones
    Patent number: 5364672
    Abstract: Artificial stones from finely divided glass fragments and artificial resins and having a great similarity to natural stones under optical, weight-related and tactile-esthetical aspects consist of15 to 30% by weight of a transparent cured or thermoplastically deformed synthetic resin which may be dyed,10 to 80% by weight of white, green, brown or mixed fragmented and/or granulated waste glass of grain sizes of from 0.05 to 3 mm,0 to 40% by weight of transparent, opaque or strongly colored fragmented and/or granulated new glass having grain sizes of from 0.05 to 3 mm,0 to 75% by weight of transparent, opaque or strongly colored ground material having grain sizes of from 0.05 to 3 mm, produced from 80 to 92 parts by weight of waste glass having grain sizes of from 0.05 to 0.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: November 15, 1994
    Inventor: Andreas Schultze-Kraft