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).

  • Patent number: 10134109
    Abstract: The invention relates to a depiction arrangement for security papers, value documents, electronic display devices or other data carriers, having a grid image arrangement for depicting a target image (40) that is broken down into two or more partial target images (42, 44), having a motif image that is subdivided into a plurality of periodically or at least locally periodically arranged cells (24) in each of which are arranged mapped regions of one or more of the partial target images (42, 44), a viewing grid (22), composed of a plurality of viewing grid elements, that, when the motif image is viewed, reconstructs the complete target image (40) from the mapped regions arranged in the cells (24), the motif image being, independently of the cell subdivision, split into at least first and second microinformation regions (60, 62) in which the cells each include different combinations of mapped regions of the partial target images (40, 42), and the microinformation regions (60, 62) being arranged in the shape of
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: November 20, 2018
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Wittich Kaule, Michael Rahm, Wolfgang Rauscher
  • Patent number: 10105982
    Abstract: A security element for securing security papers, value documents and other data carriers, has a lenticular image that, from different viewing directions, displays at least two appearances. The lenticular image includes a lens grid composed of a plurality of microlenses and a laser-sensitive motif layer arranged spaced apart from the lens grid. The laser-sensitive motif layer comprises, in two or more motif layer sub-regions, different markings introduced by the action of laser radiation and that, when the motif layer is viewed with the lens grid, produce at least two appearances. The lens grid is divided into two or more lens grid sub-regions in which the microlenses each comprise differently refractive lens surface forms. The different lens grid sub-regions are congruent with the different motif layer sub-regions, and the markings of the motif layer sub-regions being produced by laser impingement of the lens grid sub-regions.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: October 23, 2018
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Christian Fuhse, Michael Rahm, André Gregarek
  • Patent number: 10046585
    Abstract: A micro-optical inspection arrangement comprises micro-focusing elements which are composite bodies consisting of a main part and an additional part and which have a reference focal length. The main parts are provided as micro-focusing element preforms, and the additional parts are formed from one or more functional coatings. The invention also relates to a method for producing such a micro-optical inspection arrangement and to a micro-optical displaying arrangement comprising the micro-optical inspection arrangement according to the invention and a microstructure arrangement, in particular a moiré magnification arrangement and a modulo magnification arrangement. The invention also relates to security elements and data carriers that have the micro-optical inspection arrangement according to the invention.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 14, 2018
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Winfried Hoffmuller, Michael Rahm, Theodor Burchard, Andreas Rauch, Rudolf Seidler, Anne Bucker, Armin Weingartner, Bernhard Wiedner, Christian Fuhse
  • Patent number: 9987875
    Abstract: (EN) The invention relates to an optically variable security element (20) for securing data carriers, having a flip image comprising first and second identifiers (24, 26) which can be detected from different first and second viewing directions (40, 42). According to the invention, the first and second identifiers (24, 26) of the flip image are present in an optically variable recording layer (30), which has a reflective layer (52) produced by a vacuum deposition process, and the security element (20) contains a viewing element screen (32) which is spaced apart from the recording layer (30) and which, when viewed from the first or second viewing direction (40, 42), reveals the first or second identifiers (24, 26), respectively.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 5, 2018
    Assignee: GIESECKE+DEVRIENT MOBILE SECURITY GMBH
    Inventors: Christian Fuhse, Manfred Heim, Michael Rahm, Günter Endres
  • Patent number: 9911074
    Abstract: The invention concerns a security element having a magnetic coding consisting of magnetic coding elements. At least one of the magnetic coding elements has a grid-shaped magnetic region which is formed by a plurality of mutually parallel grid strips made of magnetic material which respectively have a magnetic anisotropy. The grid strips lead, through their magnetic anisotropy, to the magnetization direction of the coding element being able to differ from the direction of the applied magnetic field. Since the resultant magnetic signals that the grid-shaped magnetic regions deliver cannot be simulated by conventional magnetic regions, said coding elements increase the anti-forgery security of the security element.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: March 6, 2018
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Michael Rahm, Manfred Heim, Andreas Rauch, Jurgen Schutzmann, Winfried Hoffmuller
  • Publication number: 20180001690
    Abstract: A security element (1) for a security paper, value document or the like, having a carrier (8) which has an areal region (3) which is divided into a multiplicity of pixels (4) which respectively includes at least one optically active facet (5), whereby the majority of the pixels (4) respectively have several of the optically active facets (5) of identical orientation per pixel (4), and the facets (5) are so oriented that the areal region (3) is perceptible to a viewer as an area that protrudes and/or recedes relative to its actual spatial form.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Inventors: Christian FUHSE, Michael RAHM, Andreas RAUCH, Wittich KAULE
  • Patent number: 9827802
    Abstract: A security element (1) for a security paper, value document or the like, having a carrier (8) which has an areal region (3) which is divided into a multiplicity of pixels (4) which respectively includes at least one optically active facet (5), whereby the majority of the pixels (4) respectively have several of the optically active facets (5) of identical orientation per pixel (4), and the facets (5) are so oriented that the areal region (3) is perceptible to a viewer as an area that protrudes and/or recedes relative to its actual spatial form.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: November 28, 2017
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Christian Fuhse, Michael Rahm, Andreas Rauch, Wittich Kaule
  • Patent number: 9697456
    Abstract: An optically variable security element, for security papers, value documents and other data carriers, includes a single or multilayer central body having opposing first and second main surfaces, an arrangement of microlenses on the first main surface of the central body, the microlenses having a refractive effect defining a focal plane, a laser-sensitive recording layer arranged on the second main surface of the central body, a mask layer arranged between the arrangement of microlenses and the laser-sensitive recording layer and outside of the focal plane of the microlenses, and a plurality of micromarks produced in the laser-sensitive recording layer by the action of laser radiation, each micromark being associated with a microlens and being visible when the security element is viewed through the associated microlens. The mask layer comprises a macroscopic gap region that is in register with the plurality of micromarks.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: July 4, 2017
    Assignee: GIESECKE & DEVRIENT GMBH
    Inventors: Andre Gregarek, Michael Rahm, Josef Schinabeck, Winfried Hoffmuller
  • Publication number: 20170106689
    Abstract: A security element for securing security papers, value documents and other data carriers, has a lenticular image that, from different viewing directions, displays at least two appearances. The lenticular image includes a lens grid composed of a plurality of microlenses and a laser-sensitive motif layer arranged spaced apart from the lens grid. The laser-sensitive motif layer comprises, in two or more motif layer sub-regions, different markings introduced by the action of laser radiation and that, when the motif layer is viewed with the lens grid, produce at least two appearances. The lens grid is divided into two or more lens grid sub-regions in which the microlenses each comprise differently refractive lens surface forms. The different lens grid sub-regions are congruent with the different motif layer sub-regions, and the markings of the motif layer sub-regions being produced by laser impingement of the lens grid sub-regions.
    Type: Application
    Filed: March 31, 2015
    Publication date: April 20, 2017
    Inventors: Christian FUHSE, Michael RAHM, André GREGAREK
  • Publication number: 20160110638
    Abstract: An optically variable security element, for security papers, value documents and other data carriers, includes a single or multilayer central body having opposing first and second main surfaces, an arrangement of microlenses on the first main surface of the central body, the microlenses having a refractive effect defining a focal plane, a laser-sensitive recording layer arranged on the second main surface of the central body, a mask layer arranged between the arrangement of microlenses and the laser-sensitive recording layer and outside of the focal plane of the microlenses, and a plurality of micromarks produced in the laser-sensitive recording layer by the action of laser radiation, each micromark being associated with a microlens and being visible when the security element is viewed through the associated microlens. The mask layer comprises a macroscopic gap region that is in register with the plurality of micromarks.
    Type: Application
    Filed: April 28, 2014
    Publication date: April 21, 2016
    Inventors: Andre GREGAREK, Michael RAHM, Josef SCHINABECK, Winfried HOFFMULLER
  • Patent number: 9274258
    Abstract: The present invention relates to a thin-film element (30) having an interference layer structure for security papers, value documents and the like, having at least two semitransparent absorber layers (34, 38) and at least one dielectric spacing layer (36) arranged between the at least two absorber layers. According to the present invention, it is provided that the two absorber layers (34, 38) are each formed from a material having a complex refractive index N whose real part n and imaginary part k differ at least in a portion of the visible spectral range by a factor of 5 or more.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: March 1, 2016
    Assignee: Giesecke & Devrient GMBH
    Inventors: Christian Fuhse, Michael Rahm, Manfred Heim, Ralf Liebler
  • Publication number: 20160042265
    Abstract: The invention concerns a security element having a magnetic coding consisting of magnetic coding elements. At least one of the magnetic coding elements has a grid-shaped magnetic region which is formed by a plurality of mutually parallel grid strips made of magnetic material which respectively have a magnetic anisotropy. The grid strips lead, through their magnetic anisotropy, to the magnetization direction of the coding element being able to differ from the direction of the applied magnetic field. Since the resultant magnetic signals that the grid-shaped magnetic regions deliver cannot be simulated by conventional magnetic regions, said coding elements increase the anti-forgery security of the security element.
    Type: Application
    Filed: April 4, 2014
    Publication date: February 11, 2016
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Michael RAHM, Manfred HEIM, Andreas RAUCH, Jurgen SCHUTZMANN, Winfried HOFFMULLER
  • Patent number: 9176266
    Abstract: A security element for a security paper, value document or the like, having a carrier which has a reflective areal region which is divided into a multiplicity of reflective pixels. The area of each pixel is smaller than the area of the reflective areal region by at least one order of magnitude. Each pixel has at least one reflective facet which is formed in a surface of the carrier, and the at least one reflective facet reflects light incident along a predetermined direction on the areal region directionally in a reflection direction predefined by the orientation of the facet. The orientations of the facets of different pixels have a substantially random variation over the reflective areal region.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: November 3, 2015
    Assignee: GIESECKE & DEVRIENT GMBH
    Inventors: Christian Fuhse, Manfred Heim, Michael Rahm, Andreas Rauch, Stefan Bichlmeier
  • Patent number: 9016726
    Abstract: The invention relates to a security element for security papers, value documents and the like with at least one microstructure which has a visual appearance that is viewing angle-dependent in transmission, whereby the at least one microstructure is formed from an arrangement of a multiplicity of structure elements with a characteristic structure spacing of 1 ?m or more. According to the invention it is provided that the security element contains at least one motif image which, through the viewing angle-dependent visual appearance of the microstructure, is visible in transmission from certain viewing angles, and invisible in transmission from other viewing angles, and that the microstructure and the motif image together have a thickness of 50 ?m or less.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 28, 2015
    Assignee: Giesecke & Devrient GmbH
    Inventors: Andreas Rauch, Michael Rahm, Manfred Heim, Christian Fuhse
  • Patent number: 9004540
    Abstract: The present invention relates to a security element (20) for security papers, value documents and the like, having a feature region (24) that selectively influences incident electromagnetic radiation (30). According to the present invention, it is provided that the feature region (24) includes metallic nanopatterns (28) in which volume or surface plasmons are excited and/or resonance effects are caused by the incident electromagnetic radiation (30).
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 14, 2015
    Assignee: Giesecke & Devrient GmbH
    Inventors: Michael Rahm, Marius Dichtl, Manfred Heim, Hans Lochbihler, Thomas Kampfe, Thomas Pertsch, Jorg Petschulat, Ernst-Bernhard Kley
  • Publication number: 20150084962
    Abstract: The invention relates to a depiction arrangement for security papers, value documents, electronic display devices or other data carriers, having a grid image arrangement for depicting a target image (40) that is broken down into two or more partial target images (42, 44), having a motif image that is subdivided into a plurality of periodically or at least locally periodically arranged cells (24) in each of which are arranged mapped regions of one or more of the partial target images (42, 44), a viewing grid (22), composed of a plurality of viewing grid elements, that, when the motif image is viewed, reconstructs the complete target image (40) from the mapped regions arranged in the cells (24), the motif image being, independently of the cell subdivision, split into at least first and second microinformation regions (60, 62) in which the cells each include different combinations of mapped regions of the partial target images (40, 42), and the microinformation regions (60, 62) being arranged in the shape of
    Type: Application
    Filed: July 30, 2014
    Publication date: March 26, 2015
    Inventors: Wittich KAULE, Michael RAHM, Wolfgang RAUSCHER
  • Patent number: 8964296
    Abstract: A method for producing a microstructure on a carrier by: (a) manufacturing a donor foil by forming an embossed structure with elevations and depressions in a first foil material and applying a transfer layer to the embossed structure, (b) manufacturing an acceptor foil by applying an adhesive layer to a second foil material, (c) laminating the donor foil and the acceptor foil by means of the adhesive layer, the transfer layer on the elevations of the embossed structure bonding to the adhesive layer, and (d) transferring the bonded regions of the transfer layer to the acceptor foil by separating the donor foil and the acceptor foil from each other, thereby forming in the acceptor foil a first microstructure from the transferred regions of the transfer layer, and/or forming in the donor foil a second microstructure complementary to the first microstructure.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 24, 2015
    Assignee: Giesecke & Devrient GmbH
    Inventors: Winfried Hoffmuller, Theodor Burchard, Michael Rahm, Josef Schinabeck, Manfred Heim, Andreas Rauch, Christian Fuhse
  • Patent number: 8906184
    Abstract: The present invention relates to a method for producing, for the depiction of a specified motif, a micro-optical depiction arrangement that exhibits a colored motif grid, composed of a plurality of micromotif elements, and a focusing element grid, composed of a plurality of microfocusing elements that reconstructs the specified motif when the micromotif elements are viewed.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: December 9, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Lars Hoffmann, Manfred Dotzler, Manfred Heim, Marius Dichtl, Michael Rahm, Ralf Liebler
  • Patent number: 8878844
    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).
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: November 4, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Wittich Kaule, Michael Rahm, Wolfgang Rauscher
  • Publication number: 20140238628
    Abstract: A method for manufacturing a security paper includes an endless microlens thread having a top and an opposing bottom with the top provided at least in fractional regions with microlenses. A paper web having a predetermined ridge pattern is produced and defines ridge regions in which the microlens is embedded in the interior of the paper, and that exhibits, lying between the ridge regions, window regions in which the microlens thread emerges at the surface of the paper web. The microlens thread is introduced into the paper web and, at the same time, is joined on its bottom and, in the ridge regions, also on its top with the paper web. The paper web with the microlens thread forms the security paper.
    Type: Application
    Filed: September 4, 2012
    Publication date: August 28, 2014
    Inventors: Rudolf Seidler, Manfred Heim, Bernhard Wiedner, Michael Rahm