Patents by Inventor Winfried Hoffmuller

Winfried Hoffmuller 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: 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
  • Publication number: 20180141370
    Abstract: An apparatus for applying security elements, comprises at least one value document substrate transport device for transporting a value document substrate web, at least one security elements transport device for transporting a security elements carrier band having a plurality of security elements, wherein the security elements carrier band has a first and a second main surface which oppose each other, each security element has a first and a second main surface which oppose each other, each security element is arranged with its first main surface on the first main surface of the security elements carrier band, and each security element has adhesive properties at its second main surface, wherein the apparatus has an application region in order to apply the security elements with their second main surface onto the value document substrate web. A security elements carrier band and a value document involve the apparatus.
    Type: Application
    Filed: May 19, 2016
    Publication date: May 24, 2018
    Inventors: Josef SCHINABECK, André GREGAREK, Winfried HOFFMÜLLER, Christoph GEBAUER, Christoph MENGEL, Mario KELLER, Matthias PFEIFFER
  • 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
  • Patent number: 9840071
    Abstract: The present invention relates to a security element for a security paper, a valuable article or the like having a substrate (1), the substrate being at least partially furnished with a coating (2) that is substantially tack free at room temperature, and the coating (2) including at least one radiation-crosslinkable component.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: December 12, 2017
    Assignee: Giesecke+Devrient Currency Technology GmbH
    Inventors: Winfried Hoffmuller, Kerstin Sander
  • Patent number: 9734735
    Abstract: An optically variable surface pattern is made available, having at least two partial areas with reflection elements, wherein the reflection elements of the first partial region on the one hand and the reflection elements of the second partial region on the other hand reflect impinging light in different reflection directions. The first partial region is so covered with a first glazing ink layer that a viewer, upon a change of the viewing angle at which the viewer views the optically variable surface pattern, sees the first partial region glow in a first color upon reaching a first viewing angle. The second partial region glows in a second color that is different from the first color upon reaching a second viewing angle.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: August 15, 2017
    Assignee: Glesecke & Devrient GmbH
    Inventors: Christian Fuhse, Andreas Rauch, Winfried Hoffmuller
  • 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
  • Patent number: 9399366
    Abstract: The present invention relates to a security element for security papers, value documents and the like, having a micro-optical moiré magnification arrangement having a first motif image that consists of a planar periodic or at least locally periodic arrangement of a plurality of first micromotif elements (38) that produce a hidden piece of image information, and a planar periodic or at least locally periodic arrangement of a plurality of microfocusing elements (34) for the moiré-magnified viewing of the first micromotif elements of the motif image, the first micromotif elements (38) being formed from nematic liquid crystal material and forming a phase-shifting layer for light from a specified wavelength range, and the magnified moiré image being perceptible substantially only upon viewing the security element through a polarizer.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: July 26, 2016
    Assignee: Giesecke & Devrient GMBH
    Inventors: Winfried Hoffmuller, Marius Dichtl, Manfred Heim, Mario Keller
  • 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
  • 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: 9248689
    Abstract: The present invention relates to a method for producing a security element (1), to a security element (1) obtainable by the method according to the invention, to transfer materials having the security elements according to the invention, and to objects of value secured with the security elements according to the invention. The security element (1) according to the invention has two functional layers (12, 22) which are bonded together by means of a resist layer (30). The resist layer (30) has a pattern which is employed to generate a congruent pattern in the first functional layer (12). Then the pattern of the resist layer (30), and thus also of the first functional layer (12), is exactly reproduced in the second functional layer (22). This is achieved by bonding the second functional layer (22) in the form of the pattern of the resist layer (30). The non-bonded areas of the second functional layer (22) are removed, thereby forming negative writing.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: February 2, 2016
    Assignee: GIESECKE & DEVRIENT GMBH
    Inventors: Winfried Hoffmuller, Patrick Renner, Manfred Heim, Theodor Burchard
  • Publication number: 20160023495
    Abstract: An optically variable surface pattern is made available, having at least two partial areas with reflection elements, wherein the reflection elements of the first partial region on the one hand and the reflection elements of the second partial region on the other hand reflect impinging light in different reflection directions. The first partial region is so covered with a first glazing ink layer that a viewer, upon a change of the viewing angle at which the viewer views the optically variable surface pattern, sees the first partial region glow in a first color upon reaching a first viewing angle. The second partial region glows in a second color that is different from the first color upon reaching a second viewing angle.
    Type: Application
    Filed: January 30, 2014
    Publication date: January 28, 2016
    Applicant: Giesecke & Devrient GmbH
    Inventors: Christian FUHSE, Andreas RAUCH, Winfried HOFFMULLER
  • Patent number: 9238383
    Abstract: The present invention relates to a method for producing a security element (1), to a security element (1) obtainable by the method according to the invention, to transfer materials having the security elements according to the invention, and to objects of value secured by the security elements according to the invention. The security element (1) according to the invention has at least two functional layers (12, 22), whereby each functional layer forms a motif and the motifs are either congruent, or one motif represents a photographic negative of the other motif. In the method according to the invention, the motif of one functional layer (12) is transferred into the other functional layer (22) with the help of an adhesive layer (30).
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: January 19, 2016
    Assignee: Giesecke & Devrient GmbH
    Inventors: Winfried Hoffmuller, Patrick Renner, Manfred Heim
  • Patent number: 8968856
    Abstract: The present invention relates to a security element (20) for security papers, value documents and the like having a diffraction pattern that exhibits an embossed relief pattern (24, 26) and a coating layer (28, 32) that increases the visibility of the diffraction effect of the embossed relief pattern (24, 26). According to the present invention, the relief pattern (24, 26) is formed on the basis of a cholesteric liquid crystalline material (24) and the coating layer (28, 32) includes a reflective (28) and/or a high-index layer (32).
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: March 3, 2015
    Assignee: Giesecke & Devrient GmbH
    Inventors: Winfried Hoffmüller, Theodor Burchard
  • 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
  • Publication number: 20150041054
    Abstract: The present invention relates to a security element for a security paper, a valuable article or the like having a substrate (1), the substrate being at least partially furnished with a coating (2) that is substantially tack free at room temperature, and the coating (2) including at least one radiation-crosslinkable component.
    Type: Application
    Filed: April 7, 2014
    Publication date: February 12, 2015
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Winfried HOFFMULLER, Kerstin SANDER
  • Patent number: 8778481
    Abstract: The present invention relates to a security element for protecting valuable articles, having a first and a second authenticating feature. The first authenticating feature comprises a first arrangement having a plurality of focusing elements present in a first grid, and a second arrangement having a plurality of microscopic structures present in a second grid. Here, the first and second arrangement are disposed in such a way that the microscopic structures of the second arrangement are seen magnified when viewed through the focusing elements of the first arrangement. The second authenticating feature is machine and/or visually verifiable and is not influenced by the first arrangement of the first authenticating feature.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: July 15, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Wittich Kaule, Manfred Heim, Marius Dichtl, Winfried Hoffmuller
  • Patent number: 8685488
    Abstract: The present invention relates to a method for producing a micropattern on a substrate (22), in which a substrate (22) is provided with a relief pattern (26, 28) that exhibits elevations (26) and depressions (28), and in which the elevations (26) and/or depressions (26) are arranged in the form of the desired micropattern, and with a printing tool, an imprint material (30; 34) is transferred to the relief pattern (26, 28), the viscosity of the imprint material (30; 34) being chosen such that the imprint material (30; 34) is selectively transferred either substantially only onto the elevations (26) or substantially only into the depressions (28) of the relief pattern.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 1, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Winfried Hoffmuller, Theodor Burchard, Marius Dichtl, Patrick Renner, Michael Rahm, Manfred Heim, Lars Hoffmann, Manfred Dotzler, Ralf Liebler, Mario Keller
  • Patent number: 8622435
    Abstract: The present invention relates to a security element (30) for securing valuable articles, having a first layer (13), composed of cholesteric liquid crystal material, that is present at least in some areas, a second layer (14), composed of liquid crystal material, that is present at least in some areas, and a further layer (22), having a machine-readable feature, that is present at least in some areas and that is covered at least in some areas by the first and second layer composed of liquid crystal material.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: January 7, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Theodor Burchard, Winfried Hoffmuller, Thorsten Pillo, Manfred Heim, Friedrich Kretschmar, Jurgen Ruck
  • Publication number: 20130270813
    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: Application
    Filed: December 20, 2011
    Publication date: October 17, 2013
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Winfried Hoffmuller, Michael Rahm, Theodor Burchard, Andreas Rauch, Rudolf Seidler, Anne Bucker, Armin Weingartner, Bernhard Wiedner, Christian Fuhse
  • Patent number: 8557369
    Abstract: A highly refractive embossing lacquer for producing micro-optic arrangements which contains at least one binding agent which has at least one radiation-curing compound system having one or more organic compounds. The highly refractive embossing lacquer has at least a portion of the organic compounds of the radiation-curing compound system having molecules with at least one polarizable element, so that a polymeric material with a refractive index of greater than 1.5 is formed upon radiation curing. A security element which is produced with at least one micro-optic authenticity feature is also provided. The micro-optic authenticity features permit the production of security elements that are so thin that they can be easily incorporated into value documents.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 15, 2013
    Assignee: Geisecke & Devrient GmbH
    Inventors: Winfried Hoffmüller, Marius Dichtl