Invisible Patents (Class 106/31.14)
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Patent number: 11244218Abstract: The present disclosure provides a polarized Raman spectrum-based nano barcode smart label, including: a substrate and a nanoparticle coding layer that is provided on the substrate and can be coded by polarized Raman spectrum coding, wherein the nanoparticle coding layer that can be coded by polarized Raman spectrum coding is a mixed layer including a plurality of nanomaterials having different Raman characteristic peaks; under different polarization detection states, the Raman characteristic peaks can exhibit coding characteristics that are totally different from those under a non-polarization detection state and are distinguished from those of a conventional Raman peak position, so as to achieve spectral characteristics for multiple coding. During use of the smart label of the present disclosure, a corresponding nano barcode detection system is used to detect a brand label provided with the encoded nanoparticles to obtain coding information of the brand label.Type: GrantFiled: June 1, 2021Date of Patent: February 8, 2022Assignee: Nanjing UniversityInventors: Xinglong Wu, Jiaqing Xu, Jiancang Shen
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Patent number: 10828263Abstract: A layered body comprising: a core region; at least one intermediate layer disposed around the core region; and an outer layer disposed around the at least one intermediate layer, wherein at least one of the at least one intermediate layers comprises a gas, the layered body having at least one dimension, measured across the body and through the core region, of 100 ?m or less.Type: GrantFiled: December 6, 2017Date of Patent: November 10, 2020Assignee: UCL Business LtdInventors: Mohan Edirisinghe, Ming Wei Chang, Eleanor Stride
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Patent number: 10780059Abstract: A layered body comprising: a core region; at least one intermediate layer disposed around the core region; and an outer layer disposed around the at least one intermediate layer, wherein at least one of the at least one intermediate layers comprises a gas, the layered body having at least one dimension, measured across the body and through the core region, of 100 ?m or less.Type: GrantFiled: December 6, 2017Date of Patent: September 22, 2020Assignee: UCL Business LtdInventors: Mohan Edirisinghe, Ming Wei Chang, Eleanor Stride
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Patent number: 10620558Abstract: Described herein is a LEP ink composition comprising a luminescent component, a resin; and a carrier liquid security liquid electrostatic ink composition for printing a security image.Type: GrantFiled: March 10, 2016Date of Patent: April 14, 2020Assignee: HP Indigo B.V.Inventors: Haim Cohen, Yaron Grinwald, Julia Kornilov, Reut Avigdor, Gideon Amir
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Patent number: 10184057Abstract: A fluid for ink jet printing characters on a substrate that become magnetized in the presence of a magnetic field, the fluid HAVING a suspension of nanoparticles dispersed in a solvent, wherein the fluid comprises a viscosity from 1 to 50 cps and a surface tension of 20-45 dynes/cm, further wherein each nanoparticle is sized between 10-180 nm and comprises M(III)2O3, M(II)O and M(II)M(III)2O4, wherein M(III) is a trivalent metal and M(II) is a divalent metal, or Fe2O3, MnO and M(II)O, wherein M is a divalent metal selected from the group consisting of Fe, Ni, Mn, Co, Cu, Pt, Au, Ag, Ba and a rare earth metal.Type: GrantFiled: June 8, 2016Date of Patent: January 22, 2019Inventor: Thomas Villwock
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Patent number: 9303135Abstract: An aqueous ink for indirect printing applications including water; a co-solvent; a colorant; and a polymer latex comprising an aqueous dispersion of polymer particles wherein the polymer latex has a softening temperature of from about 60° C. to less than 105° C. and a glass transition temperature of from about 45° C. to about 100 C.Type: GrantFiled: October 30, 2013Date of Patent: April 5, 2016Assignee: Xerox CorporationInventors: Jenny Eliyahu, Daryl W. Vanbesien, Michelle N. Chrétien, Marcel P. Breton, Barkev Keoshkerian
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Patent number: 9034089Abstract: The disclosed invention relates to the use of molybdenum (VI) peroxo complex containing an amino acid, such as MoO(O2)2(GLY)(H2O), in marking applications, as well as to ink formulations comprising such complexes.Type: GrantFiled: August 12, 2011Date of Patent: May 19, 2015Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Anthony Jarvis, Martin Walker, Adam O'Rourke, Richard Cook
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Patent number: 8669536Abstract: An ink composition includes a colorant visible under visible light and a tagging composition, including a carrier and a detectable marker dispersed or dissolved in the carrier. The detectable marker is an isotope of an element, the isotope being present in the ink composition in a concentration ranging from about 1 parts per billion (ppb) to about 1000 ppb.Type: GrantFiled: February 12, 2013Date of Patent: March 11, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Zeying Ma, Gary William Larson, Lufei Lin
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Patent number: 8663820Abstract: The invention relates to a printed document of value having at least one authenticity feature in the form of a luminescent substance based on doped host lattices. The host lattice has a strong crystal field and is doped with at least one chromophore with the electron configuration (3d)2.Type: GrantFiled: March 5, 2002Date of Patent: March 4, 2014Assignee: Giesecke & Devrient GmbHInventors: Thomas Giering, Rainer Hoppe, Fritz Stahr
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Patent number: 8642504Abstract: The present invention provides a composition, which comprises an aqueous solvent and forms a transparent colorless coating, which yields markings of high contrast on exposure to energy. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.Type: GrantFiled: July 17, 2006Date of Patent: February 4, 2014Assignee: Gill Jennings & Every LLPInventors: Jonathan Campbell, William Walker, Alan Platt, John Whitworth, Karen O'Donoghue, Ann Hunt, Howard Roger Dungworth, John Mark Plonka
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Patent number: 8632175Abstract: A high viscosity aqueous inkjet ink that is useful in ink jet printers. The ink having heat activated colorant solids that are not heat activated during the printing process, and are printed onto a substrate in the form of an image that can be transferred onto a subsequent or final substrate by applying heat and intimate contact between the two substrates. The ink can also be heat activated onto the substrate without further transfer by applying heat at the temperature that is suitable for the activation of the colorant.Type: GrantFiled: August 29, 2012Date of Patent: January 21, 2014Assignee: Sawgrass Technologies, Inc.Inventor: Ming Xu
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Publication number: 20130255536Abstract: A document which may be a security document has a thermochromic coating which may be a thermochromic ink on the substrate of the document. The ink may include several thermochromic materials which transition from various different colors to substantially clear in appearance as the ink is warmed to various temperatures. The combination of the colors of the thermochromic materials can give the document a different color at a number of different temperatures, until the coating is warmed to the highest color change point. When at or above the highest color change temperature, the coating becomes substantially transparent and the printed area assumes the color of the underlying substrate. The coating may also include non-reactive materials of yet another color that mixes with the colors of the thermochromic materials.Type: ApplicationFiled: May 31, 2013Publication date: October 3, 2013Inventors: Rajendra Mehta, Richard L. Shields
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Patent number: 8540812Abstract: The present invention relates to a machine-readable security element for security products which comprises at least one particulate substance having electroluminescent properties and a transparent, electrically conductive pigment, to a priming ink for the production of a security element of this type, and to a security product which includes the security element.Type: GrantFiled: August 5, 2011Date of Patent: September 24, 2013Assignee: MERCK PATENT GmbHInventors: Burkhard Krietsch, Matthias Kuntz, Oliver Muth, Manfred Paeschke, Jakob Kuen
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Publication number: 20130127947Abstract: The invention relates to a treatment for printing a surface with an ink that comprises a compound that exhibits a change of electronic spin state as a function of temperature, imparting optical properties such that the ink is visible in a temperature range that includes an ambient temperature of around 20° C. and is transparent in the visible spectrum when the ink is brought to a temperature above said range and then brought back down to a temperature within the range.Type: ApplicationFiled: July 21, 2011Publication date: May 23, 2013Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRSInventor: Jean-Francois Letard
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Patent number: 8216354Abstract: An inkjet ink composition, and in particular, invisible ink printable with an inkjet printing device. The present embodiments provide a water-based invisible ink that can be detected by using a long wavelength ultraviolet (UV) light and is easier and safer to use than other sources used to detect known invisible inks.Type: GrantFiled: November 19, 2010Date of Patent: July 10, 2012Assignee: Xerox CorporationInventor: Gabriel Iftime
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Publication number: 20120125228Abstract: An inkjet ink composition, and in particular, invisible ink printable with an inkjet printing device. The present embodiments provide a water-based invisible ink that can be detected by using a long wavelength ultraviolet (UV) light and is easier and safer to use than other sources used to detect known invisible inks.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Applicant: XEROX CORPORATIONInventor: Gabriel Iftime
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Publication number: 20120104743Abstract: A document which may be a security document has a thermochromic coating which may be a thermochromic ink on the substrate of the document. The ink may include several thermochromic materials which transition from various different colors to substantially clear in appearance as the ink is warmed to various temperatures. The combination of the colors of the thermochromic materials can give the document a different color at a number of different temperatures, until the coating is warmed to the highest color change point. When at or above the highest color change temperature, the coating becomes substantially transparent and the printed area assumes the color of the underlying substrate. The coating may also include non-reactive materials of yet another color that mixes with the colors of the thermochromic materials.Type: ApplicationFiled: November 2, 2010Publication date: May 3, 2012Applicant: THE STANDARD REGISTER COMPANYInventors: Rajendra Mehta, Richard L. Shields
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Patent number: 8167989Abstract: The invention refers to new chemical compounds belonging to the known class of REE mixed ligand complexes, namely, to the compound of di-(nitrate)acetylacetonatobis (1,10-fenantrolin)lanthanide (III) of the general formula [Ln(NO3)2Acac(Phen)2]*H20, where Ln is TbxEr1-x, Acac is acetylacetonate-ion, Phen is 1,10-fenantrolin in the form suitable for application as a luminescent additive to ink for the hidden marking the valuables to provide protection against forgery. Such additive has three protective features suitable for automatic control independently of each other. The first protective feature is the ability to luminescence in green light under the impact of UV-radiation. The second protective feature is the ability to luminescence in green light under the impact of X-rays. The third protective feature is the Thermo-luminescence, which means the ability to accumulate for indefinite time span the energy of UV- and X-rays with subsequent green light emission at heating.Type: GrantFiled: November 14, 2008Date of Patent: May 1, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Anatoliy Grigor'evich Mirochnik, Vladimir Egorovich Karacev
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Patent number: 8138252Abstract: It is an object of the present invention to provide a thermally disappearing resin particle and a thermally disappearing hollow resin particle which can be decomposed at a low temperature in a short time and do not cause deformation or cracking of a sintered body to be obtained in the case of using as a binder for a ceramic or a lightening material; a method of producing the thermally disappearing hollow resin particle; a ceramic composition which can be degreased and fired at a low temperature in a short time and gives a molded body with a high porosity without deformation or cracking even in the case a large quantity of a pore-forming material is used; and a method of producing a porous ceramic filter. The present invention is directed to a thermally disappearing resin particle, which contains a polyoxyalkylene resin, and 10% by weight or more of the whole particle disappearing within an hour by heating at a prescribed temperature in a range from 100 to 300° C.Type: GrantFiled: December 13, 2005Date of Patent: March 20, 2012Assignee: Sekisui Chemical Co., Ltd.Inventors: Takahiro Oomura, Naoyuki Nagatani, Miki Inaoka, Hiroshi Yamauchi
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Patent number: 8128300Abstract: Disclosed is a hand-held photochromic marking implement including a photochromic colorant and solid phase colorant carrier which can be used in direct-to-media marking and a method of forming same.Type: GrantFiled: June 16, 2010Date of Patent: March 6, 2012Assignee: Xerox CorporationInventors: Alexander Kugel, Jeffrey Banning
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Patent number: 8114207Abstract: The invention relates to a marker solution which is to be applied by means of an inkjet printer and contains (i) at least one organic solvent that has a greater steam pressure than water at 20° C. and a water content of less than 50 percent (v/v), (ii) predefined first synthetically produced nucleic acids, and (iii) a nucleic acid-complexing, organic auxiliary agent as components.Type: GrantFiled: March 1, 2006Date of Patent: February 14, 2012Assignee: Secutech International Pte. Ltd.Inventor: Andre Josten
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Patent number: 8080097Abstract: A method for labeling a UV-fluorescing substrate includes positioning a UV-fluorescing substrate adjacent to an inkjet material dispenser, and selectively jetting an edible, invisible, non-UV fluorescing ink onto the UV-fluorescing substrate with the inkjet material dispenser.Type: GrantFiled: September 22, 2004Date of Patent: December 20, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Vanessa I. Chinea, Marcos A. Barreto
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Patent number: 7926930Abstract: The invention relates to a method for manufacturing an inkjet ink including a polyamic acid (A), including a step of at least reacting one or more compounds selected from the group of a monoamine (a3) and a compound having one acid anhydride group (a4) with a compound having two or more acid anhydride groups (a1) and a diamine (a2).Type: GrantFiled: August 30, 2007Date of Patent: April 19, 2011Assignee: Chisso CorporationInventors: Hiroyuki Satou, Setsuo Itami, Takayuki Hattori
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Patent number: 7758268Abstract: Disclosed is a hand-held photochromic marking implement including a photochromic colorant and solid phase colorant carrier which can be used in direct-to-media marking and a method of forming same.Type: GrantFiled: December 20, 2005Date of Patent: July 20, 2010Assignee: Xerox CorporationInventors: Alexander Kugel, Jeffrey Banning
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Publication number: 20100112314Abstract: Methods of applying covert features using security inks comprise transparent chiral birefringent pigments or a mixture of transparent chiral birefringent pigments and reflective pigments are described. Hidden features appear to be bright and achromatic against dark background when overlaid with circular polarizer.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Inventors: Yingqiu Jiang, Aharon Hochbaum
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Publication number: 20100050901Abstract: Various complex structures (nano/micro particles) are incorporated into a taggant providing different optical, magnetic and spectroscopic identification codes. The size and shape of the taggant can be tailored for many different types of products ranging from pharmaceuticals, auto and airplane parts all the way to apparel goods. By integrating a number of different nano/micro structures with various optical, electrical and magnetic properties, significant barriers are introduced to the counterfeiters attempting to replicate the taggant. The latter is easily incorporated to different types of products and is detected with various types of handheld readers/detectors depending on the complexity of the security level. The taggant may detect environmental materials or conditions.Type: ApplicationFiled: August 20, 2009Publication date: March 4, 2010Inventors: Alexandru S. Biris, Enkeleda Dervishi
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Publication number: 20100005601Abstract: An ink, dye or paint containing inclusions which reflect incident light in a low ambient light environment, such as at night is provided and is transparent or invisible during the day or in high light environments.Type: ApplicationFiled: July 14, 2009Publication date: January 14, 2010Inventor: Barbara C. Kantor
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Publication number: 20090220749Abstract: The present invention provides a composition, which comprises a latent activator. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.Type: ApplicationFiled: September 6, 2006Publication date: September 3, 2009Inventors: Karen O' Donoghue, Jonathan Campbell, Alan Platt, John Whitworth, Howard Roger Dungworth, Adolf Käser
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Patent number: 7576149Abstract: A recording medium with an ink image thereon, wherein a varnish at least partially covers the ink image, and wherein the varnish composition prior to application comprises at least one latex emulsion, water, at least one base and at least one surfactant.Type: GrantFiled: May 31, 2006Date of Patent: August 18, 2009Assignee: Xerox CorporationInventors: Christine D. Anderson, T. Brian McAneney
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Publication number: 20090191420Abstract: Composition, which comprises a latent activator and a colour former, a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.Type: ApplicationFiled: January 17, 2007Publication date: July 30, 2009Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.Inventors: Karen O'Donoghue, Jonathan Campbell, Ian Street
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Publication number: 20080276817Abstract: Embodiments of a printed security mark and a process are disclosed.Type: ApplicationFiled: May 9, 2007Publication date: November 13, 2008Inventors: Garry Dale Hinch, Herbert T. Etheridge, III, James William Stasiak, Timothy Dean Strecker
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Publication number: 20080245267Abstract: The present invention relates to an red luminescent ink composition exhibiting adequate and stable emission intensity under irradiation of ultraviolet rays and high solubility for a resin and an organic solvent. The ink composition of the present invention contains a luminous compound represented by the following formula (1): wherein R is a perfluoroalkyl group having 2 to 20 carbons, L1 and L2 are the same or different and are sulfoxide having a substituted or unsubstituted aryl group or a substituted or unsubstituted an alkyl group.Type: ApplicationFiled: April 6, 2007Publication date: October 9, 2008Applicant: Orient Chemical Industries, Ltd.Inventors: Fumio Furuya, Yasuhiro Yamasaki
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Publication number: 20080145588Abstract: A coating composition for optical recording includes a uniform dispersion of polymer particles in a liquid, a quantity of dye particles uniformly dispersed in the liquid, the dye particles being soluble in the polymer but substantially insoluble in the liquid, and a quantity of radiation absorber material adapted to absorb radiation at a wavelength of a laser for optical recording of an image.Type: ApplicationFiled: December 16, 2006Publication date: June 19, 2008Inventors: Vladek P. Kasperchik, Michael J. Day, Jayprakash C. Bhatt
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Publication number: 20080022888Abstract: A ready to use skin marking stain/applicator for use in inhibiting voter fraud requiring only the addition of water, includes a open top container with a measured quantity of dry water soluble stain producing compound disposed therein. The compound, when dissolved in water, filling the container, is capable of reacting with the organic materials on the person's finger, to produce within a relatively short time, a semipermanent, highly visible, stain, on the finger. A substantially impermeable removable cover is secured over the open top of the container to inhibit the ingress of moisture into the container prior to its use.Type: ApplicationFiled: July 27, 2006Publication date: January 31, 2008Inventor: Douglas C. Arndt
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Patent number: 7297454Abstract: A colorless ink jet ink composition is provided for printers for printing on both porous and hybrid glossy or semi-glossy media. The ink composition comprises a water soluble polymer or dispersed latex. The ink formulation provides substantially air fast, stain resistant, and light fastness to the printed image. Further, the ink formulation evidences improved overall image quality.Type: GrantFiled: July 30, 2002Date of Patent: November 20, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Zeying Ma, John M Gardner, Gregg A Lane
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Patent number: 7289103Abstract: A method and system for enabling user interaction with computer software running in a computer system. A user is provided with an interface surface containing information relating to the computer software and including coded data indicative of an identity of the interface surface and of at least one reference point of the interface surface. The user places a sensing device into an operative position relative to the interface surface. In this operative position, the sensing device senses indicating data indicative of: the identity of the interface surface; and a position of the sensing device relative to the interface surface, using at least some of the coded data. The computer system receives the indicating data from the sensing device, and uses the indicating data to identify at least one interactive element relating to the computer software. The computer software is then operated in accordance with instructions associated with the at least one interactive element.Type: GrantFiled: November 12, 2002Date of Patent: October 30, 2007Assignee: Silverbrook Research Pty LtdInventors: Paul Lapstun, Kia Silverbrook
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Patent number: 6861012Abstract: A latent or “invisible ink” security marking formulation is provided using a phosphor with distinct emissions characteristics including visible emission due to excitation at a particular invisible wavelength. An insoluble inorganic phosphor with this or a similarly distinct emission characteristic is milled to a small particle size, preferably less than one micron particle diameter, and is combined with a carrier at very low pigment concentration, for example one percent by weight of the ink formulation. Preferably the pigment is cropped to resin particles in a binder. This ink formulation is diluted by a volatile solvent and applied using a conventional inkjet printer of the type used to mark codes on packages and labels. To test for security purposes the printing is irradiated and a response according to the predetermined characteristic is noted (or not noted) to detect security information.Type: GrantFiled: October 11, 2001Date of Patent: March 1, 2005Assignee: Laser Lock Technologies, Inc.Inventors: Norman A. Gardner, Terry Stovold
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Patent number: 6846350Abstract: Disclosed is a red luminous ink composition comprising a europium complex represented by the formula: wherein R1 is a hydrogen atom or a substituent selected from the group consisting of an alkyl group having from 1 to 4 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms and a halogen atom, R is a group selected from the group consisting of a fluorine-comprising alkyl group having from 1 to 20 carbon atoms, a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 10 carbon atoms and a substituted or unsubstituted aryl group having from 6 to 12 carbon atoms. The red luminous ink composition exhibits satisfactory emission intensity under ultraviolet irradiation.Type: GrantFiled: July 16, 2002Date of Patent: January 25, 2005Assignee: Orient Chemical Industries, Ltd.Inventors: Keishi Imanishi, Yasuhiro Yamasaki
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Publication number: 20040202838Abstract: The invention relates to an overcoat composition for an imaged image-recording element, the overcoat composition comprising an aqueous carrier, an optional humectant, an optional surfactant, and 0.05 to 20 weight percent, based on the total weight of the overcoat composition, of an addition polymer having an acid number greater than about 110. The invention also relates to a method of making an imaged image recording element having a transparent overcoat, which method comprises forming an image on the image recording element and applying over the image an overcoat composition of the present invention.Type: ApplicationFiled: October 24, 2002Publication date: October 14, 2004Applicant: Eastman Kodak CompanyInventors: David S. Uerz, Hwei-Ling Yau
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Patent number: 6802992Abstract: Non-green anti-Stokes luminescent material, comprising the elements Ln, erbium (Er) and ytterbium (Yb), Ln representing at least one element which is selected from the group consisting of yttrium (Y), gadolinium (Gd), scandium (Sc) and lanthanum (La), a process for its production and its use.Type: GrantFiled: November 8, 1999Date of Patent: October 12, 2004Inventors: Jürgen Wieczoreck, Alfred Siggel, Uwe Fischbeck
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Patent number: 6770687Abstract: A water-based security printing ink is provided with two means of security. The use of a variable light absorbing and/or transmitting pigment or dye is a first security and a water repelling agent is provided as a second security. Visible images can be generated from the printed ink upon exposure to UV or infrared light. The water repelling agent renders the image waterproof and differentiates the printed image from the substrate, which allows the image to be detected upon exposure to water or other aqueous mixture. Suitable inks can be used in conventional printing methods, such as jet printing, lithography, offset printing and impact printing. Also provided are substrates imaged with these security printing inks.Type: GrantFiled: April 5, 1999Date of Patent: August 3, 2004Assignee: NCR CorporationInventors: Yaoping Tan, Maurice W. Lewis
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Patent number: 6743283Abstract: Disclosed is a blue luminous ink composition comprising a luminous compound represented by the formula: wherein R1 is a group selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, an alkoxyl group having from 1 to 4 carbon atoms and a halogen atom, R is a group selected from the group consisting of a fluorine-comprising alkyl group having from 1 to 20 carbon atoms, a substituted or unsubstituted alkyl group having from 1 to 4 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 10 carbon atoms and a substituted or unsubstituted aryl group having from 6 to 12 carbon atoms, M is a two-valent or three-valent metal, provided rare-earth metal and alkaline earth metal (IIa group) are eliminated, and n is an integer of 2 or 3. The blue luminous ink composition exhibits satisfactory emission intensity under ultraviolet irradiation.Type: GrantFiled: August 30, 2002Date of Patent: June 1, 2004Assignee: Orient Chemical Industries, Ltd.Inventors: Keishi Imanishi, Yasuhiro Yamasaki
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Publication number: 20040094065Abstract: A pigment-based ink jet ink set and image-recording element combination is described, wherein the ink jet image-recording element has a gloss value of at least 5 when measured at 60°, and wherein each ink in the ink set has a normalized differential specular reflectance, N&Dgr;RS(X), of less than 1.25. N&Dgr;RS(X) is defined as the maximum value within a set of N&Dgr;RS(Xn) values in which each N&Dgr;RS(Xn) is the normalized specular reflectance for a density patch of a printed test image. The printed test image consists of a series of at least eleven density patches printed such that the ink laydown of the patches increases incrementally, from no ink laydown to a maximum level generating a density of at least 1.Type: ApplicationFiled: November 19, 2002Publication date: May 20, 2004Applicant: Eastman Kodak CompanyInventors: Richard C. Reem, Karen J. Klingman
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Patent number: 6610351Abstract: An organic or organoelement, linear or branched, monomeric or polymeric composition of matter having a Raman-active component in the form of particles. The particles having a maximum dimension of 50 &mgr;m. The Raman-active compound is applied to a substrate. When the Raman-active compound is exposed to a laser light wavelength which is batochromically well beyond a spectral region of maximum absorbance of said Raman-active compound, Raman scattering can be detected.Type: GrantFiled: April 11, 2001Date of Patent: August 26, 2003Assignee: Quantag Systems, Inc.Inventors: Alexander Nikitovich Shchegolikhin, Olga Leonidovna Lazareva, Valery Pavlovich Mel'nikov, Vassili Yu Ozeretski, Lyle David Small
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Publication number: 20030110979Abstract: Disclosed is a blue luminous ink composition comprising a luminous compound represented by the formula: 1Type: ApplicationFiled: August 30, 2002Publication date: June 19, 2003Inventors: Keishi Imanishi, Yasuhiro Yamasaki
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Publication number: 20030106460Abstract: Disclosed is a red luminous ink composition comprising a europium complex represented by the formula: 1Type: ApplicationFiled: July 16, 2002Publication date: June 12, 2003Inventors: Keishi Imanishi, Yasuhiro Yamasaki
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Publication number: 20030055156Abstract: The invention relates to water-dilutable binding agents and coating agents with particularly quick drying surfaces. The invention also relates to a method for the production and use thereof. The water-dilutable binding agents are based on polymer dispersions, which are characterized in that they contain at least one poly acid/polyvinylpyrrolidone complex and optionally one or several water-soluble zircon compounds. The inventive binding agents have a quick drying surface and are suitable for use in the production of primers, paints and plasters with quick drying surfaces or quick-acting wash-fastness.Type: ApplicationFiled: June 19, 2002Publication date: March 20, 2003Inventor: Ivan Cabrera
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Publication number: 20020170461Abstract: A thermochromic ink composition is provided for use on security documents such as checks which provides a reversible color change in response to heat. The ink composition includes a thermochromic aqueous slurry and an ink vehicle comprising either a phenolic modified rosin and a compatible oil, a styrene maleic anhydride resin and a glycol, or an acrylic resin varnish. The ink composition is printed on at least a portion of a substrate using letterpress printing methods and provides enhanced adhesion to toner when applied to areas of a substrate which are subsequently printed with a non-impact printing device such as a laser printer.Type: ApplicationFiled: May 10, 2002Publication date: November 21, 2002Inventors: Rajendra Mehta, Richard L. Shields, Aurelia Gloria W. Kalman
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Patent number: 6478861Abstract: The present invention provides a transparent or colorless coating comprising a heat responsive material that increases in opacity when exposed to heat. An example of a heat responsive material is an inorganic compound or an organic resin. The present invention further provides a coating composition comprising a carrier and a heat responsive material. The coating can further include additives such as an adhesion promoter, a defoamer, a crosslinking agent, a plasticizer, a humectant, a pH adjuster, a biocide, a co-solvent, a surface tension modifier, and/or a combination thereof. The present invention further provides a method for creating a mark on a substrate comprising providing to the substrate the transparent coating to obtain a coated substrate and exposing a selected area of the coated substrate to heat, e.g., a laser, to create the mark. The present invention further provides substrates suitable for laser marking.Type: GrantFiled: March 30, 2000Date of Patent: November 12, 2002Assignee: Videojet Technologies Inc.Inventors: Wing Sum Vincent Kwan, Yoshikazu Mizobuchi
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Publication number: 20010051217Abstract: The present invention features processes and compositions for producing a metallic-looking image on a substrate having a reflective or luminescent surface. The process utilizes an opaque coating composition containing an opaque coating agent comprising a mixture of a polyacid and a polybase. When applied to a light-emitting, reflective or luminescent substrate, the opaque coating composition at least partially masks the light-emitting reflective or luminescent surface of the substrate, but becomes increasingly translucent or transparent when contacted with a recording liquid such as an ink, revealing the light-emitting, reflective or luminescent surface.Type: ApplicationFiled: March 19, 2001Publication date: December 13, 2001Inventor: Asutosh Nigam