Patents by Inventor Gerhard Schwenk

Gerhard Schwenk 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: 8262134
    Abstract: This invention relates to a value document, in particular a bank note, having a value document substrate and at least two different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document. A second feature substance is formed by a luminescent substance which is applied to the value document substrate in the form of a coding.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: September 11, 2012
    Assignee: Giesecke & Devrient GmbH
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Patent number: 7999237
    Abstract: The invention relates to a printed value document having at least one luminescent substance.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: August 16, 2011
    Assignee: Giesecke & Devrient GmbH
    Inventors: Gerhard Schwenk, Gregor Grauvogl, Ulrich Magg, Ulrich Scholz
  • Patent number: 7906201
    Abstract: The invention relates to a value document, in particular a bank note, having a value document substrate and different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and second and third feature substances are applied to the value document substrate in a printing ink jointly and in the form of a coding. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range. The two substances are used for the value recognition of different user groups.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: March 15, 2011
    Assignee: Giesecke & Devrient GmbH
    Inventors: Gerhard Schwenk, Thomas Giering
  • Patent number: 7845570
    Abstract: The invention relates to a value document, in particular a bank note, having a value document substrate and at least three different feature substances for checking the value document, which has a first feature substance, and wherein second and third feature substances are applied to the value document substrate in a printing ink jointly. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: December 7, 2010
    Assignee: Giesecke & Devrient GmbH
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Patent number: 7819434
    Abstract: A value document, in particular a bank note, has a value document substrate and at least one feature substance for authenticity recognition and at least two different feature substances for checking the value document. First and second feature substances are present on or in the value document substrate in the form of mutually independent codings which render, at least partly, the same information, e.g. statement of value, currency, etc.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: October 26, 2010
    Assignee: Giesecke & Devrient GmbH
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Patent number: 7790056
    Abstract: The invention relates to a composition for a coding forming at least part of a coding system having a luminescent basic substance and at least one luminescent additive, the composition of the coding being formed by the presence or absence of a luminescent additive and/or the type of additives and/or the number of additives.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: September 7, 2010
    Assignee: Giesecke & Devrient GmbH
    Inventors: Thomas Giering, Gerhard Schwenk
  • Publication number: 20100163747
    Abstract: The invention relates to a printed value document having at least one luminescent substance.
    Type: Application
    Filed: July 6, 2005
    Publication date: July 1, 2010
    Inventors: Gerhard Schwenk, Gregor Grauvogl, Ulrich Magg, Ulrich Scholz
  • Patent number: 7487919
    Abstract: The invention relates to a system for checking the security features of documents of value with at least one sensor in areas of different security categories. Since dependent on the security category different sensor parameters are made available for the respective checking of the security feature, so as to check the same security feature in different ways, the preparing of forgeries can be prevented particularly reliably.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: February 10, 2009
    Assignee: Giesecke & Devrient GmbH
    Inventors: Thomas Giering, Gerhard Schwenk
  • Publication number: 20080116272
    Abstract: The invention relates to a luminescent security feature system, a substrate having said luminescent security feature, and an apparatus and method for checking the luminescent security feature. The invention is characterized in that, among other things, the security feature comprises at least two luminescent materials which produce corresponding, overlapping emission peaks in response to an excitation radiation.
    Type: Application
    Filed: September 1, 2005
    Publication date: May 22, 2008
    Inventors: Thomas Giering, Gerhard Schwenk, Wolfgang Rauscher, Oliver Martin, Yannick Mechine, Lysis Cubieres
  • Publication number: 20070273141
    Abstract: This invention relates to a value document, in particular a bank note, having a value document substrate and at least two different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document. A second feature substance is formed by a luminescent substance which is applied to the value document substrate in the form of a coding.
    Type: Application
    Filed: October 5, 2004
    Publication date: November 29, 2007
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Publication number: 20070257481
    Abstract: This invention relates to a value document, in particular a bank note, having a value document substrate and at least two different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and a second feature substance applied to the value document substrate in the form of a coding.
    Type: Application
    Filed: October 5, 2004
    Publication date: November 8, 2007
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Publication number: 20070257482
    Abstract: The invention relates to a value document, in particular a bank note, having a value document substrate and different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and second and third feature substances are applied to the value document substrate in a printing ink jointly and in the form of a coding. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range. The two substances are used for the value recognition of different user groups.
    Type: Application
    Filed: October 5, 2004
    Publication date: November 8, 2007
    Inventors: Gerhard Schwenk, Thomas Giering
  • Publication number: 20070210574
    Abstract: The invention relates to a value document, in particular a bank note, having a value document substrate and at least one feature substance for authenticity recognition and at least two different feature substances for checking the value document, wherein, according to the invention, first and second feature substances are present on or in the value document substrate in the form of mutually independent codings which render at least partly the same contents, e.g. statement of value, currency, etc.
    Type: Application
    Filed: October 5, 2004
    Publication date: September 13, 2007
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Publication number: 20070158433
    Abstract: The invention relates to a value document, in particular a bank note, having a value document substrate and at least three different feature substances for checking the value document, which has a first feature substance, and wherein second and third feature substances are applied to the value document substrate in a printing ink jointly. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range.
    Type: Application
    Filed: October 5, 2004
    Publication date: July 12, 2007
    Inventors: Gerhard Schwenk, Thomas Giering, Gerhard Stenzel, Wittich Kaule
  • Publication number: 20070095891
    Abstract: The invention relates to a system for checking the security features of documents of value with at least one sensor in areas of different security categories. Since dependent on the security category different sensor parameters are made available for the respective checking of the security feature, so as to check the same security feature in different ways, the preparing of forgeries can be prevented particularly reliably.
    Type: Application
    Filed: October 5, 2004
    Publication date: May 3, 2007
    Inventors: Thomas Giering, Gerhard Schwenk
  • Publication number: 20060131425
    Abstract: The invention relates to a value document having a machine-readable authenticity mark. According to the invention the authenticity mark comprises a luminescent marking substance and a marking substance absorbing in the infrared spectral range.
    Type: Application
    Filed: June 4, 2004
    Publication date: June 22, 2006
    Applicant: Giesecke & Devrient Gmbh
    Inventors: Gerhard Stenzel, Wittich Kaule, Gerhard Schwenk
  • Patent number: 6974623
    Abstract: The invention relates to a security paper with at least two types of mottled fibers, which differ in terms of their luminescent characteristics and form a code. In each case one type of mottled fibers is present in a defined subarea of the security paper, and the code is represented by the defined geometric arrangement of the subareas on the security paper and/or by the presence or absence of mottled fibers of a specific type.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: December 13, 2005
    Assignee: Giesecke & Devrient GmbH
    Inventor: Gerhard Schwenk
  • Publication number: 20030104176
    Abstract: The invention relates to a security paper with at least two types of mottled fibres, which differ in terms of their luminescent characteristics and form a code. In each case one type of mottled fibres is present in a defined subarea of the security paper, and the code is represented by the defined geometric arrangement of the subareas on the security paper and/or by the presence or absence of mottled fibres of a specific type.
    Type: Application
    Filed: September 27, 2002
    Publication date: June 5, 2003
    Inventor: Gerhard Schwenk
  • Patent number: 6506476
    Abstract: The invention concerns a printed valuable document with at least one authentication feature in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum, is excitable at least in parts of the visible region of the spectrum and transparent at least in partial areas of the IR spectral region. The luminescent substance is present in the volume of the valuable document in such a concentration that the characteristics of the valuable document just remain unimpaired. The rare earth metal concerned is thulium.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: January 14, 2003
    Assignee: Glesecke & Devrient GmbH
    Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
  • Patent number: 6503603
    Abstract: The invention relates to a printed valuable document with at least one authenticity mark in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum and is excitable in the visible region of the spectrum, and is transparent in at least parts of the IR spectral region. The rare earth metal is holmium. The luminescent substance is present in the volume of the valuable document in such a concentration that the properties of the valuable document just remain unimpaired.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: January 7, 2003
    Assignee: Giesecke & Devrient GmbH
    Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel