Antifraud Or Antitampering Patents (Class 430/10)
  • Patent number: 8936846
    Abstract: The invention relates to a value document, especially a banknote, having a sequence of layers into which visually and/or mechanically perceptible identifiers in the form of patterns, letters, numbers or images are introduced by the action of laser radiation. According to the present invention, the sequence of layers includes a marking layer (22) composed of an ink mixture (24, 26) exhibiting a laser-radiation-absorbing mixture component (26) and a laser-radiation-transparent mixture component (24), the identifiers being visually and/or mechanically perceptible due to an irreversible change in the optical properties of the ink mixture (24, 26), effected by the action of the laser radiation.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: January 20, 2015
    Assignee: Giesecke & Devrient GmbH
    Inventors: Georg Depta, Christof Baldus, Karlheinz Mayer, Peter Schiffmann
  • Patent number: 8865379
    Abstract: Generally, polymeric members and laser marking methods for producing visible marks on polymeric members, such as on thin and/or curved surfaces. The laser marking methods can include methods of laser marking straws with the step of matching laser source properties to the properties of straws being marked or with the step of laser marking straws having photochromic dyes.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: October 21, 2014
    Assignee: Inguran, LLC
    Inventors: Johnathan Charles Sharpe, Thomas B. Gilligan, Richard W. Lenz, Juan Moreno
  • Patent number: 8852947
    Abstract: A photographic material for image display including an intimately sorbed contrast agent that provides a contrast layer against which the recorded image can be seen regardless of the nature and color of the background.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: October 7, 2014
    Assignee: Smartwater Research Limited
    Inventors: Michael Cleary, Marcello Vitale, Sharon Robinson
  • Patent number: 8505979
    Abstract: A method of producing a data carrier with a marking is disclosed. The data carrier includes a laser-markable portion and a beam-modifying portion adjacent the laser-markable portion. The beam-modifying portion has a beam modifying property. The method includes irradiating a laser beam through the beam-modifying portion to allow the beam modifying property thereof to modify at least one beam property to produce a resultant laser beam. This resultant laser beam creates a marking with a visual impression corresponding to the resultant laser beam at the laser-markable portion. The method further includes modifying the beam modifying property of at least a part of the beam-modifying portion through which the laser beam is irradiated for creating the marking so that the exact same resultant beam is difficult to be obtained thereat. A data carrier thereby produced is also disclosed.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: August 13, 2013
    Assignee: Gemalto Oy
    Inventor: Tapio Yrjonen
  • Patent number: 8257897
    Abstract: A toner set includes a plurality of toners, at least one toner but less than all toners of the toner set including binder, colorant and fluorescence agent and remaining additional toners including binder, colorant and free of fluorescence agent. At least a first toner grouping and a second toner grouping of the toner set form a combination, the first and second groupings of the combination exhibiting a substantially same color under ambient light conditions upon image formation. The first toner grouping and the second toner grouping of the combination contain a different amount of the fluorescence agent, wherein upon exposure to activating energy, the fluorescence agent fluoresces to cause a visible change in the color of a pattern formed in an image by the first toner grouping as compared to the second toner grouping.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: September 4, 2012
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Daryl W. Vanbesien, Edward G. Zwartz, Shen-ge Wang, Reiner Eschbach
  • Patent number: 8168355
    Abstract: A method of producing an image in the crystalline colloidal array is disclosed. The method includes providing an ordered array of particles received within a curable matrix composition; curing a first portion of the matrix composition, wherein the first cured portion diffracts radiation at a first wavelength; curing another portion of the matrix composition, wherein the other cured portion diffracts radiation at another wavelength; and exposing the array to radiation to exhibit an image.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: May 1, 2012
    Assignee: PPG Industries Ohio, Inc
    Inventors: Sean Purdy, Eldon L. Decker, Calum H. Munro, Noel R. Vanier
  • Patent number: 7968173
    Abstract: The present invention relates to printable security paper that includes a region capable of receiving printed indicia on the front side and on the reverse side which are observable in reflected light and form an image observable in transmitted light, as security element protecting against two-sided copying, characterized in that such region is a screened region having an average overall opacity less than the opacity of the vellum part of the rest of the paper, said screened region being made up from alternations of vellum miniregions, having an approximately constant thickness equal to that of the vellum part of the rest of the paper, and of miniregions of reduced opacity because of their smaller thickness compared with the vellum miniregions. The invention also relates to the security document obtained with this paper.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: June 28, 2011
    Assignee: Arjowiggins Security
    Inventors: Nathalie Vast, Yvan Thierry, Stephane Mallol
  • Patent number: 7960084
    Abstract: An information recording medium includes a transparent recording member and a substantially non-transparent member. The transparent recording member has at least one transparent area and a concavo-convex pattern on a first surface thereof while bearing a reverse toner image on a second surface thereof. The substantially non-transparent member is formed on the second surface of the transparent recording member.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Koinuma, Mikio Ishibashi, Kazuhisa Sudo, Megumi Ohtoshi, Reki Nakamura, Masafumi Yamada, Yukiko Iwasaki, Takashi Sakamaki
  • Patent number: 7906198
    Abstract: A document containing security images which enable original documents to be distinguished from copies of the originals. The document 60 bears an image 63 containing a latent image 68. Latent image 68 may be formed from two or more images 65 and 66. The first image 65 is preferably formed at a high line frequency and at a first angle in one or more colors. The second image 66 is preferably formed at a lower line frequency at the same angle as first image 65 and in one or more colors. The colors in the first image 65 and the second image 66 are preferably chosen so that latent image 68 has substantially the same color as image 63.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: March 15, 2011
    Inventor: Thomas M. Wicker
  • Patent number: 7897307
    Abstract: Disclosed is a birefringent marking material comprising a vehicle for the marking material and birefringent nanoparticles having an average particle size of less than about 700 nm. The birefringent marking material, such as an ink or a toner, can be used to provide a security marking on or in an item, thereby enabling authentication of the item containing the image formed using the birefringent marking material.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, C. Geoffrey Allen, Paul F. Smith
  • Patent number: 7883762
    Abstract: The invention concerns a security document comprising, as security element against recto/verso copying, indicia present on both sides and capable of being viewed under reflected lighting and forming an image capable of being viewed under transmitted light. The invention is characterized in that said indicia comprise lines and form said image with 3D effect.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 8, 2011
    Assignee: Arjowiggins Security
    Inventor: Pierre Doublet
  • Patent number: 7875338
    Abstract: A component for authenticating a document or a product including a plastic film having at least one embossed surface, a metallization layer at least partially covering the embossed surface, the film and the metallized layer forming an embossed film having a first zone producing a rainbow effect according to a first orientation of the component in relation to a lighting direction, the rainbow effect disappearing when the component is oriented substantially perpendicularly to the first orientation, and a second zone which has been partially demetallized and remetallized with a dielectric material producing an effect of being colored by a first color for the first orientation of the component and by a second different color for the orientation substantially perpendicular to the first orientation.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: January 25, 2011
    Assignee: Hologram Industries (S.A.)
    Inventor: Hugues Souparis
  • Patent number: 7864290
    Abstract: A system and method for coding an intermediate film element, e.g., an interpositive or an internegative, in an effective manner while maintaining the integrity of the film element. A first coat of a stabilizer is applied to frames of a selected scene. A second coat of stabilizer is applied, and a third coat of stabilizer is thereafter applied. A security code according to the present invention may be applied to specifically selected locations on a reel or footage so as to create a unique code which is traceable to, e.g., a specific laboratory.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: January 4, 2011
    Assignee: Thomson Licensing
    Inventor: David Frederick Baker
  • Patent number: 7648842
    Abstract: The present invention relates to a unique dual color security paper authentication system. The authenticating system comprises the combination of a security paper together with a coordinated applicator. The paper contains a starch, an iodide salt and an acidic developer resin. The applicator of the system comprises two authenticating solutions. The first authenticating solution comprises one or more of a sulfonamide and a copper salt dispersed in a solvent. The second authenticating solution comprises one or more of a leuco and fluoran dye precursor dispersed in a solvent. On applying the authenticating solutions to authentic security paper, a first color of a starch iodine is expressed and a second color of a leuco or fluoran dye is expressed.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: January 19, 2010
    Assignee: Appleton Papers Inc.
    Inventor: Tianyan Xie Hartlep
  • Patent number: 7576898
    Abstract: A holographic optical element (HOE) that includes a deep image hologram and a method for using this HOE as a security device are described. The deep image hologram is viewable with a collimated or at least partially collimated light source having a center wavelength in the visible region of the electromagnetic spectrum and a spectral bandwidth, wherein the spectral bandwidth of the collimated or at least partially collimated light source at least partially overlaps the spectral bandwidth of the deep image hologram. The deep image hologram is not viewable (i.e., appears essentially unrecognizable to the human eye) with a diffuse lighting source, such as ordinary room lighting.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: August 18, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William J. Molteni, Michael G. Fickes
  • Patent number: 7514188
    Abstract: A process for providing a security paper, in particular a banknote, with a coloured marking, comprising providing a photosensitive preparation on a portion of said document and submitting at least selected areas of said portion to a light beam, wherein said preparation is capable of forming a film on said portion and comprises a substance capable of producing colloidal metal particles under the effect of UV irradiation, and said areas are irradiated by means of an UV-light beam.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: April 7, 2009
    Assignee: KBA-Giori S.A.
    Inventors: Patrik Hoffmann, Tristan Bret, Vincent Moreau
  • Publication number: 20090008926
    Abstract: The invention relates to a value document, especially a banknote, having a sequence of layers into which visually and/or mechanically perceptible identifiers in the form of patterns, letters, numbers or images are introduced by the action of laser radiation. According to the present invention, the sequence of layers includes a marking layer (22) composed of an ink mixture (24, 26) exhibiting a laser-radiation-absorbing mixture component (26) and a laser-radiation-transparent mixture component (24), the identifiers being visually and/or mechanically perceptible due to an irreversible change in the optical properties of the ink mixture (24, 26), effected by the action of the laser radiation.
    Type: Application
    Filed: April 5, 2005
    Publication date: January 8, 2009
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Georg Depta, Christof Baldus, Karlheinz Mayer, Peter Schiffmann
  • Publication number: 20080248411
    Abstract: Provided are an indicating material having excellent facility and high security and an indicating method for recording and indicating information on this indicating material. The indicating material has a structure that an ultraviolet light-screening layer having visible light-transmitting ability is laminated on a recording layer having visible light-transmitting ability and composed of a recording layer-forming material containing a color-developing component that becomes a color-developed state by the action of ultraviolet light. The indicating method is an indicating method for recording and indicating information on the above-described indicating material, comprising condensing a laser beam having a wavelength of a visible range or longer on the recording layer in the indicating material to irradiate the recording layer with the laser beam and recording and indicating the information by two-photon absorption.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 9, 2008
    Applicants: Masahiro IRIE, JSR Corporation
    Inventors: Masahiro Irie, Makoto Mihara
  • Patent number: 7429413
    Abstract: In one embodiment, a nonmetallic, tamper-indicating, multi-layer label with a metallic appearance is described. The label comprises a pearlescent layer, a film layer, a patterned release layer, and a pigmented adhesive layer with the provisos that (i) the pigmented adhesive layer is an exterior layer of the label and is substantially free of pearlescent pigment, and (ii) the patterned release layer is an interior layer of the label. Each layer has first and second opposing planar surfaces, and each layer is in intimate contact with the layer or layers immediately adjacent to it. In another embodiment, two layers, one layer comprising a non-pearlescent pigment and the other layer comprising the adhesive, replace the pigmented adhesive layer.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: September 30, 2008
    Assignee: Brady Worldwide, Inc.
    Inventors: Paul C. Adair, Jeana S. Kemppainen
  • Patent number: 7326504
    Abstract: An anti-copy film is disclosed. The film has a light transmissive imageable substrate having opposing first and second surfaces. Each surface has an image receptive coating. Complementary positive and negative images are disposed on the first and second surfaces such that an imaged area on the first surface is in registration with a non-imaged area on the second surface. The anti-copy film appears substantially opaque when viewed orthogonally to and appears partially transparent when viewed obliquely to either the first or second surfaces.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: February 5, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Paul D. Graham, Jonathan P. Kitchin
  • Patent number: 7270918
    Abstract: The invention relates to printing of documents, for example bank checks. According to the various aspects of the invention, a printing system, process and product with microprinting are provided. Documents printed as described may include digitally variable microprint and other enhancements. The invention is particularly useful for enhanced security documents and the production thereof.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: September 18, 2007
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey C. Blood, Leonard R. Christopher, John F. Crichton, Thomas M. Plutchak, Gregory Rombola
  • Patent number: 7241537
    Abstract: Method for producing an exposed substrate, which has at least two different image areas. The substrate is provided with at least two photoresist layers, which are adjusted to the type of image areas to be produced.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: July 10, 2007
    Assignee: Giesecke & Devrient GmbH
    Inventor: Wittich Kaule
  • Patent number: 7220524
    Abstract: A system and a method for printing a secure document that is difficult to forge and readily easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document, a dye for forming a latent version of the image underneath the surface, a substrate, and a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration agent may be coated onto a portion of the substrate or embedded within the substrate. An ink may serve as the migration agent, in which case, the ink contains a solute for the dye.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: May 22, 2007
    Assignee: Troy Group, Inc.
    Inventors: Kevin L. Heilman, Michael R. Riley
  • Patent number: 7220525
    Abstract: A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image. In addition, if a solvent is used in an attempt to alter the printed image on the substrate, the dye migrates or diffuses to indicate tampering with the document.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: May 22, 2007
    Assignee: Troy Group, Inc.
    Inventors: Michael R. Riley, Kevin L. Heilman
  • Patent number: 7215450
    Abstract: The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The achromatic surface structures are combined with a thin-film structure, whereby upon turning or tilting the optically variable element, it is not the impression of a continuous color transition, but a defined, almost discrete color change that is produced for the viewer.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: May 8, 2007
    Assignee: Leonard Kurz GmbH & Co. KG
    Inventors: Andreas Schilling, Wayne Robert Tompkin, René Staub
  • Patent number: 7199911
    Abstract: An optical device for security and anti-counterfeit applications has a holographic diffractive structure that includes a discrete region that in response to white light illumination generates a holographic image by a process of diffraction of light in one embodiment combined with a paper substrate which also contains a secure mark produced by laser ablation of the structure, the mark being characterised by various attributes: variable cut width and pattern, being visible both in reflected light and also in transmitted light, variable depth of cut, variable perforation visible in transmission, variable reflection characteristics. In one embodiment when combined with paper based laser mark has elements in both metallised diffractive region and paper region, the marks on different regions showing different characteristics and thereby securely linking diffractive structure and paper substrate and also showing different characteristics of marking pattern on the different materials.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: April 3, 2007
    Assignee: Optaglio Ltd.
    Inventors: Philip Hudson, John Drinkwater
  • Patent number: 7161720
    Abstract: In a system for authenticating information, a holographic element, including a first layer of optical information in a first coded pattern and a second layer of optical information in a second coded pattern is inserted into a reader. The reader includes an opening into which the holographic element may be positioned, a light source, a first detector positioned at a first predetermined distance from the location of the holographic element when the holographic element is positioned in the opening, and a second detector positioned at a second predetermined distance from the location of the holographic element when the holographic element is positioned in the opening.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: January 9, 2007
    Inventors: Ronald R. Erickson, Joel N. Bock, Eliezer D. Sandler
  • Patent number: 7157301
    Abstract: Numerous embodiments of an apparatus and method for generating an identification feature are described. In one embodiment of the present invention, portions of an identification character printed with thermochromatic ink are distributed within a three-dimensional matrix of a multi-layer patch. The multi-layer patch may be disposed above a substrate.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: January 2, 2007
    Assignee: Intel Corporation
    Inventor: Patrick D. Boyd
  • Patent number: 7154170
    Abstract: Numerous embodiments of an apparatus and method for generating an identification feature are described. In one embodiment of the present invention, portions of an identification character printed with thermochromatic ink are distributed within a three-dimensional matrix of a multi-layer patch. The multi-layer patch may be disposed above a substrate.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 26, 2006
    Assignee: Intel Corporation
    Inventor: Patrick D. Boyd
  • Patent number: 7108286
    Abstract: The present invention describes security paper and security items in general containing at least one security element having at least one photoluminescent segment characterized by a linearly polarized photoluminescence and/or a linearly polarized absorption. The present invention also describes a method of producing such security items as well as the use thereof.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: September 19, 2006
    Assignee: Landquart
    Inventors: Christoph Weder, Paul Smith
  • Patent number: 7063924
    Abstract: The invention relates to an image device comprising a base material having a pattern of diffuse and specular metallic reflectivity and overlaying said pattern an image.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: June 20, 2006
    Assignee: Eastman Kodak Company
    Inventors: Cheryl J. Kaminsky, Robert P. Bourdelais
  • Patent number: 7063925
    Abstract: The invention relates to a photographic article comprising a base material carrying at least one layer comprising a photographic image formed by combination of dyes formed from couplers wherein areas of said photo image are colored without dyes formed by couplers.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 20, 2006
    Assignee: Eastman Kodak Company
    Inventors: William T. Rochford, Robert P. Bourdelais, Mridula Nair
  • Patent number: 6998211
    Abstract: A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath the surface and a substrate that includes a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration-enhancing agent may be coated onto a portion of the substrate or embedded within the substrate.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: February 14, 2006
    Assignee: Troy Group, Inc.
    Inventors: Michael R. Riley, Kevin L. Heilman, John Cooper, Nabil Nasser
  • Patent number: 6991883
    Abstract: A toner for printing documents that are difficult to forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: January 31, 2006
    Assignee: Troy Group, Inc.
    Inventors: Michael R. Riley, Kevin L. Heilman, John Cooper
  • Patent number: 6987590
    Abstract: An optical structure includes a light transmissive substrate having a surface relief pattern applied thereon, such as a hologram. A patterned layer of a reflective material is applied over portions of the surface relief pattern so as to form alphanumeric characters, bars codes, or pictorial or graphical designs. An optically active coating is applied over the patterned layer of reflective material and exposed portions of the surface relief pattern in order to provide desirable optical effects to the exposed portions of the surface relief pattern. In some embodiments, the optically active coating is a color shifting thin film, or contains color shifting flakes. Optionally, the material of the optically active coating is index matched to the light transmissive substrate in order to optically erase the effect of the surface relief pattern in the portions of the surface relief pattern not covered by the reflective material.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: January 17, 2006
    Assignee: JDS Uniphase Corporation
    Inventors: Roger W. Phillips, Vladimir P. Raksha
  • Patent number: 6927885
    Abstract: A label (1) made from a layer composite (15) includes at least one machine-readable diffractive bar code (3) consisting of narrow rectangular fields (4) occupied by the optically active structures and intermediate surfaces (5). The optically active structures which are covered by a reflection layer are embedded between layers of the layer composite (15). The diffractive relief structure used in the diffractive bar code (3) for the fields (4) diffracts and polarizes incident light and scatters the diffracted light into a half-space above the diffractive relief structure. A second diffractive relief structure differs at least in respect of the polarization of the polarizedly backscattered light with respect to the first diffractive relief structure. The second diffractive relief structure can be used for example for field surfaces of a second bar code in the bar code field (9) on the label (1) or for the intermediate surfaces (5).
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: August 9, 2005
    Assignee: OVD Kinegram AG
    Inventors: René Staub, Andreas Schilling, Wayne Robert Tompkin, Peter Gehr
  • Patent number: 6893788
    Abstract: The present invention provides an electrophotographic toner comprising at least a binder resin and a near-infrared light absorbing material containing inorganic material particles, wherein the rate of absorption in the visible region of the electrophotographic toner is 15% or less and the average dispersion diameter of the near-infrared light absorbing material is in a range from 50 nm to 800 nm. The invention also provides an electrophotographic developer comprising the above photographic toner and a carrier. Further, the invention provides an image forming method using the above electrophotographic toner.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 17, 2005
    Assignee: Fuji Xerox, Co., Ltd.
    Inventors: Masahiro Takagi, Kazuhiko Yanagida
  • Patent number: 6882452
    Abstract: This invention relates to the production of holographic devices. The holographic devices include a transparent high refractive coating that is applied selectively to provide additional security and moisture resistance.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: April 19, 2005
    Assignee: Toray Plastics (America), Inc.
    Inventors: Wolfgang Decker, Shawn Early, Jaimy Mauricio, Arthur Eric Bartholomay
  • Patent number: 6865001
    Abstract: Holographic and diffractive security devices and documents carrying security devices as well as system, apparatus, and method for making and using security devices. Security devices provide at least one type of security feature in form of secret, hidden, or covert security feature, not visible to a normal unaided human eye. Covert security features may be any graphic or symbolic representation. One or multiple security features may be provided on any single security device in any combination. Covert feature is revealed either when a decoder device is used with the security device, or when the security device is oriented and viewed in predetermined manner. Embodiments may provide a second overt or non-covert security device in the form of a diffractive or holographic image or graphic that is visible to the unaided eye without use of any decoder or special viewing conditions.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: March 8, 2005
    Assignee: Pacific Holographics, Inc.
    Inventors: Michael D. Long, Diana Newcomb
  • Patent number: 6835326
    Abstract: A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: December 28, 2004
    Assignee: BioCrystal, Ltd.
    Inventor: Emilio Barbera-Guillem
  • Patent number: 6801346
    Abstract: A security element is embedded in a layer composite of plastic material and has reflecting, optically variable surface patterns which can be visually recognized from predetermined observation directions and which are formed from a mosaic of surface elements occupied by optically active structures. A part of the surface pattern is additionally covered by a regularly arranged matrix of unit cells. Each unit cell is occupied by a single elementary surface or a group of identical surface portions that contain optically active structures which are independent of the mosaic of the surface pattern. The arrangement of the elementary surfaces and the surface portions in the matrix form an item of concealed information which is not perceptible to the naked eye, in the form of graphic or alphanumeric characters which however are reproduced in a color photocopy with a color or gray value contrast which is perceptible to the naked eye.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: October 5, 2004
    Assignee: OVD Kinegram AG
    Inventors: Andreas Schilling, Wayne Robert Tompkin
  • Publication number: 20040175636
    Abstract: Only recently the shapes and positions of the three spectral sensitivities, of the three input channels to the normal human visual system, have become known with adequate accuracy for commercial exploitation. It is now time, therefore, to design the lighting by which human observers and workers visually operate, so that a maximum of human good-seeing can result from a minimum of kilowatt-hours expended on the lighting. The method is to utilize, in the lighting, only the three spectral colors to which the visual system responds most strongly. The embodiment is a device which efficiently generates white light, using a three-component light-generating medium, the first component electrically energized to exhibit a green emission confined to the immediate wavelength neighborhood of 530 nm, the second an orange-red emission confined to the immediate wavelength neighborhood of 610 nm, and the third a blue-violet emission confined to the immediate wavelength neighborhood of 450 nm.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 9, 2004
    Inventor: William A. Thornton
  • Patent number: 6749936
    Abstract: Achromatic multilayer diffractive pigment flakes and foils are provided having diffractive structures thereon. The diffractive pigment flakes can have a symmetrical stacked coating structure on opposing sides of a reflective core layer, an asymmetrical stacked coating structure on one side of a reflective layer, or can be formed with one or more encapsulating coatings around the reflective core layer. The diffractive pigment flakes can be interspersed into liquid media such as paints or inks to produce diffractive compositions for subsequent application to a variety of objects. The foils can be laminated to various objects or can be formed on a carrier substrate. The diffractive pigment flakes and foils can be formed with a variety of diffractive structures thereon to produce selected optical effects. The diffractive foils and diffractive compositions applied to an object exhibit an iridescent diffractive effect over an achromatic background.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 15, 2004
    Assignee: Flex Products, Inc.
    Inventors: Alberto Argoitia, Paul T. Kohlmann, Matthew R. Witzman, Paul G. Coombs, Charles T. Markantes, Richard A. Bradley, Jr.
  • Publication number: 20040101638
    Abstract: An iridescent material comprises a diffraction grating incorporating a plurality of sheets (1) of a first substantially transparent material in parallel alignment and spaced away apart by quantities of a second substantially transparent material (2), the second material having a refractive index significantly lower than the refractive index of the first material, the plates being tilted at an angle &thgr; to an axis X and the grating having a period d(X) in the direction of axis X, the angle &thgr; and period d being such that a second diffraction grating is provided along an axis Z, perpendicular to axis X, the second diffraction grating having a period d(Z) and consisting of ten periods or less and whereby, the diffraction conditions of the grating can be simultaneously fulfilled by electromagentic radiation of a range of wavelength thereby causing iridescence.
    Type: Application
    Filed: April 22, 2003
    Publication date: May 27, 2004
    Inventors: Christopher Robert Lawrence, Peter Vukusic, John Roy Sambles
  • Patent number: 6692030
    Abstract: A counterfeit-resistant document comprises a substrate and a nano-pattern of nano-structures disposed on the substrate, wherein the nano-pattern is configured for forming a latent message (e.g., a warning or alert message) that appears on a copy of the document. The nano-pattern forms one of a foreground and a background of the latent message; and another pattern, e.g., a conventional pattern or another nano-pattern, forms the other of the foreground and background of the latent message. The nano-pattern and the other pattern are configured, such that the foreground and background exhibit substantially similar visual densities on an original of the document, and exhibit substantially different visual densities on the copied document. This can be accomplished by forming the nano-pattern with nano-structures (e.g.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 17, 2004
    Assignee: Verify First Technologies, Inc.
    Inventor: George K. Phillips
  • Patent number: 6665406
    Abstract: A counterfeit-resistant document comprises a contrasting layer and a dynamic camouflaging layer. The contrasting layer is highly contrastive and includes a latent message that can be reproduced over a broad range of copy device control settings. The dynamic camouflaging layer is applied over the contrasting layer to suppress the latent message. The visual density of the dynamic camouflaging layer, which comprises a camouflage pattern that is printed in thermochromic ink, inversely varies with temperature. In this manner, the dynamic camouflaging layer is inactivated at room temperatures so that the latent message is suppressed on the original document, and activated at scanning temperatures so that the latent message is exhibited on a reproduction of the original document.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: December 16, 2003
    Assignee: Verify First Technologies, Inc.
    Inventor: George K. Phillips
  • Patent number: 6664017
    Abstract: A process comprising applying a toner security mark on a document generated by xerographic means and which mark possesses white glossy characteristics, and wherein said toner is comprised of a polymer and a colorant.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: December 16, 2003
    Assignee: Xerox Corporation
    Inventors: Raj D. Patel, Michael A. Hopper, H. Bruce Goodbrand, Kurt I. Halfyard, Nan-Xing Hu
  • Publication number: 20030224257
    Abstract: An authenticatable product comprising a non-opaque latent image layer of anisotropic polymer material having background optical properties with a given preferred direction of anisotropy and a given proportion of crystallinity, the latent image layer being treated so as to include: a first localized modification in the latent image layer being associated with a first latent image; and a second localized modification in the latent image layer being associated with a second latent image such that, when viewed directly, the first latent image and the second latent image are indistinguishable from the remainder of the latent image layer and, under polarized visualization, a maximum contrast between the first latent image and the remainder of the latent image layer is actualized at a different orientation of polarized visualization than a maximum contrast between the second latent image and the remainder of the latent image layer.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 4, 2003
    Applicant: Latent Image Technology Ltd.
    Inventor: Andrey Karasev
  • Publication number: 20030124451
    Abstract: A method and apparatus for producing identification (ID) cards using a photosensitive imaging system employing microcapsules is described. In accordance with one aspect of the invention, ID cards are produced by translating an image containing identifying indicia into a latent image on an appropriate photosensitive donor sheet, pressure developing the latent image, forming a full color print of the image on a developer sheet, laminating an ID card substrate in registration with the image to the developer sheet and die cutting the laminated article to produce an ID card. Self-contained imaging systems can also be used to produce identification cards. The image preferably includes unique information useful in identifying the card holder such as a photograph, fingerprint, signature, description, name, etc. The identifying indicia may be combined with non-variable information including background printing, card issuer data, logos, security features, etc.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 3, 2003
    Inventors: Joseph C. Camillus, Alexander Y. Polykarpov, Ibrahim Katampe
  • Patent number: 6576155
    Abstract: A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: June 10, 2003
    Assignee: Biocrystal, Ltd.
    Inventor: Emilio Barbera-Guillem