Patents by Inventor Wolfgang Wensauer

Wolfgang Wensauer 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).

  • Papermaking mould for producing two-stage watermarks and method for producing the same
    Patent number: 8524039
    Abstract: A screen for producing two-level watermarks is produced by completely closing part of the screen with a viscous sealing compound, which is subsequently cured actively or passively. At the thus closed partial areas of the screen, paper deposit is hindered during papermaking so that the finished paper appears light in transmission in the areas. A mask is used for exactly positioning the sealing compound in the partial areas of the screen and/or for curing the sealing compound only in the given partial areas, whereby in the latter case the uncured areas of the sealing compound are washed out.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: September 3, 2013
    Assignee: Giesecke & Devrient GmbH
    Inventors: Wittich Kaule, Karlheinz Mayer, Bernd Stumbeck, Wolfgang Wensauer, Guenther Wild, Thomas Gerhardt, Andreas Aigner
  • Multi-Ply Security Paper
    Publication number: 20090001709
    Abstract: The present invention relates to multi-ply security paper for manufacturing security or value documents, such as banknotes, identification cards and the like. Into a first paper ply (52) is introduced an endless security element (54) that is freely accessible on at least one side of the paper ply (52). The first paper ply (52) is covered on the freely accessible side of the security element (54) by a second paper ply (56), and the second paper ply (56) exhibits one or more openings (58) in the region of the security element (54).
    Type: Application
    Filed: March 14, 2006
    Publication date: January 1, 2009
    Applicant: Giesecke & Devrient GmbH
    Inventors: Friedrich Kretschmar, Mario Keller, Ralf Liebler, Jurgen Ruck, Wolfgang Wensauer, Theodor Burchard, Thomas Bodendieck, Gregor Grauvogl, Horst Reigl
  • Papermaking mould for producing two-stage watermarks and method for producing the same
    Publication number: 20040249754
    Abstract: A screen for producing two-level watermarks is produced by completely closing part of the screen with a viscous sealing compound, which is subsequently cured actively or passively. At the thus closed partial areas of the screen, paper deposit is hindered during papermaking so that the finished paper appears light in transmission in the areas. A mask is used for exactly positioning the sealing compound in the partial areas of the screen and/or for curing the sealing compound only in the given partial areas, whereby in the latter case the uncured areas of the sealing compound are washed out.
    Type: Application
    Filed: August 5, 2004
    Publication date: December 9, 2004
    Inventors: Wittich Kaule, Karlheinz Mayer, Bernd Stumbeck, Wolfgang Wensauer, Guenther Wild, Thomas Gerhardt, Andreas Aigner