Patents Assigned to Rafka GmbH
  • Adhesive varnish to receive powdered pigments
    Patent number: 6506242
    Abstract: An adhesive varnish, adapted to retain powdered pigments, contains colophony and pre-treated linseed oil in a solvent system including primarily naphtha of the boiling range ˜80° through ˜160° C. and technical ethanol. A two-component system comprising the adhesive varnish and powdered pigment serves for temporary coloring and/or lettering of substrates made of glass, polished stone, glazed ceramic, surfaces of baked lacquer and synthetic or natural materials, in particular display windows.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: January 14, 2003
    Assignee: RAFKA GmbH
    Inventor: Raffael Wullschleger
  • Adhesive varnish to receive powdered pigments
    Patent number: 6168657
    Abstract: The novel adhesive varnish to receive powdered pigments contains colophony and pretreated linseed oil in a solvent system, which consists primarily of naphtha of the boiling range ˜80 through ˜160° C. and technical ethanol. The adhesive varnish-powdered pigment system serves for temporary colored drawing on and/or lettering of substrates made of glass, polished stone, glazed ceramic, but also on surfaces of baked lacquer and synthetic or natural materials, in particular of display windows.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: January 2, 2001
    Assignee: Rafka GmbH
    Inventor: Raffael Wullschleger