Patents by Inventor Michael Rahm

Michael Rahm 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).

  • Publication number: 20100194091
    Abstract: The present invention relates to a see-through security element (12), for security papers, value documents and the like, having at least one micropattern having a visual appearance that is viewing-angle dependent when looked through (26, 28). According to the present invention, the at least one micropattern is formed from an arrangement of a plurality of pattern elements (24) having a characteristic pattern spacing of 1 ?m or more, and the see-through security element (12) exhibits a total thickness of 50 ?m or less.
    Type: Application
    Filed: October 16, 2007
    Publication date: August 5, 2010
    Inventors: Manfred Heim, Marius Dichtl, Michael Rahm
  • Publication number: 20100182221
    Abstract: The present invention relates to a depiction arrangement for security papers, value documents, electronic display devices or other data carriers, having a raster image arrangement for depicting a planar target image that is given by an image function f(x,y), having a motif image that is subdivided into a plurality of cells (24), in each of which are arranged imaged regions of the target image, a viewing grid (22) composed of a plurality of viewing elements for reconstructing the target image when the motif image is viewed with the aid of the viewing grid (22), the motif image exhibiting, with its subdivision into a plurality of cells, an image function m(x,y) that is given by m ? ( x , y ) = f ? ( ( x y ) + ( A ? ( x , y ) - I ) · ( ( ( ( x y ) + w d ? ( x , y ) ) ? mod ? W ) - w d ? ( x , y ) - w c ? ( x , y ) ) ) · g ? ( x , y ) where w d ? ( x , y ) = W · (
    Type: Application
    Filed: June 25, 2008
    Publication date: July 22, 2010
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Wittich Kaule, Michael Rahm, Wolfgang Rauscher
  • Publication number: 20100177094
    Abstract: The present invention relates to a depiction arrangement for security papers, value documents, electronic display devices or other data carriers, having a raster image arrangement for depicting a specified three-dimensional solid (30) that is given by a solid function f(x,y,z), having a motif image that is subdivided into a plurality of cells (24), in each of which are arranged imaged regions of the specified solid (30), a viewing grid (22) composed of a plurality of viewing elements for depicting the specified solid (30) when the motif image is viewed with the aid of the viewing grid (22), the motif image exhibiting, with its subdivision into a plurality of cells (24), an image function m(x,y) that is given by m ? ( x , y ) = f ? ( x K y K z K ? ( x , y , x m , y m ) ) · g ? ( x , y ) , ? where ? ( x K y K ) = ( x y ) + V ? ( x , y , x m , y m ) · ( ( ( ( x y ) +
    Type: Application
    Filed: June 25, 2008
    Publication date: July 15, 2010
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Wittich Kaule, Michael Rahm, Wolfgang Rauscher
  • Publication number: 20080258456
    Abstract: The present invention relates to an optically variable security element (20) for securing valuable articles, having an achromatically reflective micropattern in the form of a mosaic (22) composed of a plurality of achromatically reflective mosaic elements (26-1, 26-2) that are characterized by the parameters size, contour shape, relief shape, reflectivity and spatial orientation and that form a predefined motif in that different groups of mosaic elements (26-1, 26-2) having different characteristic parameters reflect incident light (28) in different spatial regions (30). Said mosaic elements (26-1, 26-2) exhibit a lateral dimension below the resolution limit of the eye.
    Type: Application
    Filed: December 7, 2006
    Publication date: October 23, 2008
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Michael Rahm, Marius Dichtl, Manfred Heim