Patents Assigned to Datalase Ltd.
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Patent number: 12285961Abstract: The invention is directed towards a composition comprising: a near-infrared radiation absorbing compound; a colour-forming compound; and a heat transfer agent operable to facilitate heat transfer from the near-infrared radiation absorbing compound to the colour-forming compound; wherein the near-infrared radiation absorbing compound is present in an amount of 0.1-3.5 wt % of the total composition, and the heat transfer agent is present in an amount of 1-15 wt % of the total composition, and the heat transfer agent is present in the composition as solid particles. The invention further relates to substrates comprising the composition applied thereto, as well as methods of forming colour or an image on said substrates.Type: GrantFiled: December 11, 2020Date of Patent: April 29, 2025Assignee: DataLase Ltd.Inventors: Richard Cook, Martin Walker
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Patent number: 10029502Abstract: A method of forming an image on a substrate by applying energy, involves a substrate in or on which there are at least two different colour-change agents, i.e. a first colour-change agent capable of giving rise to at least two different colours; and a second colour-change agent capable of giving rise to at least one different colour than achievable with the first colour change agent. A preferred embodiment of the invention is a multi-layer laminate comprising, in order, a layer comprising the first agent, a barrier layer, and a layer comprising the second agent.Type: GrantFiled: August 14, 2017Date of Patent: July 24, 2018Assignee: DataLase Ltd.Inventors: Anthony N. Jarvis, Christopher Anthony Wyres, William Green, Martin Robert Walker
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Patent number: 9663675Abstract: In a first aspect, the invention provides an ink formulation comprising: (a) a near infrared absorbing system comprising a compound of the formula M1W1.6O6, wherein M1 is one or more elements selected from the group consisting of H, He, alkali metals such as Li, Na, K, Rb, Cs, alkaline earth metals such as Be, Mg, Ca, Sr, Ba, rare-earth elements, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, AL Ga, in, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Hf, Os, Bi and I, or ammonium; (b) a color change agent; and (c) a binder. The invention also provides alternative ink formulations for laser marking, a method of forming an image using the ink formulations and a substrate coated with the ink formulation of the invention. Ink formulations according to the invention have been found to have good laser imaging efficacy, and an essentially negligible impact on the background color of the coating.Type: GrantFiled: July 30, 2014Date of Patent: May 30, 2017Assignee: DataLase Ltd.Inventor: Anthony Jarvis
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Publication number: 20160168407Abstract: In a first aspect, the invention provides an ink formulation comprising: (a) a near infrared absorbing system comprising a compound of the formula M1W1.6O6, wherein M1 is one or more elements selected from the group consisting of H, He, alkali metals such as Li, Na, K, Rb, Cs, alkaline earth metals such as Be, Mg, Ca, Sr, Ba, rare-earth elements, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, AL Ga, in, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Hf, Os, Bi and I, or ammonium; (b) a colour change agent; and (c) a binder. The invention also provides alternative ink formulations for laser marking, a method of forming an image using the ink formulations and a substrate coated with the ink formulation of the invention. Ink formulations according to the invention have been found to have good laser imaging efficacy, and an essentially negligible impact on the background colour of the coating.Type: ApplicationFiled: July 30, 2014Publication date: June 16, 2016Applicant: DataLase Ltd.Inventor: Anthony Jarvis
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Patent number: 9333786Abstract: The present invention provides polymeric particles comprising a polymeric matrix comprising one or more water-insoluble polymers and a laser-sensitive system encapsulated in the polymeric matrix. It also provides a process for the preparation of the polymeric particles, a composition comprising the polymeric particles, a process for the preparation of this composition, a process for forming a laser-sensitive coating layer on a substrate using this composition, a coated substrate obtainable by the coating process, a process for preparing a marked substrate and a marked substrate obtainable by the marking process.Type: GrantFiled: July 4, 2008Date of Patent: May 10, 2016Assignee: Datalase, Ltd.Inventor: Jonathan Campbell
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Patent number: 9017425Abstract: A textile comprising a diacetylene compound which is capable of changing color when irradiated with light energy. Methods of imparting color to textiles comprising irradiating the textile with light energy are also provided.Type: GrantFiled: August 26, 2009Date of Patent: April 28, 2015Assignee: Datalase Ltd.Inventor: Anthony Jarvis
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Patent number: 8936901Abstract: A laser-markable composition comprises a binder and an oxyanion of a multivalent metal.Type: GrantFiled: May 6, 2014Date of Patent: January 20, 2015Assignee: DataLase Ltd.Inventor: Nazir Khan
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Patent number: 8900414Abstract: Fiber products, comprising in their body at least 20% by weight of cellulose fibers, and adequate amounts of an acid and a cationic retention aid for the acid, can be marked by means of a laser beam.Type: GrantFiled: October 21, 2008Date of Patent: December 2, 2014Assignee: Datalase, Ltd.Inventor: Adolf Käser
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Patent number: 8865620Abstract: The present invention provides heat-sensitive coating compositions, which comprise a color developer of formula (1) or mixtures thereof wherein R1 can be hydrogen, C1-20-alkyl, C3-8-cycloalkyl, C2-10-alkenyl, aryl or SO3H, and R2 and R3 can be the same or different and can be hydrogen, halogen, C1-20-alkyl, C3-8-cyclo-alkyl, C2-10-alkenyl, aryl, OR6, NR7R8, SR9, SO3H or COOR10 and R4 and R5 can be the same or different, and can be hydrogen, halogen, C1-20-alkyl, C3-8-cyclo-alkyl, C2-10-alkenyl, aryl, OR6, NR7R8 or SR9, R6, R7, R8, R9 and R10 can be the same or different and can be hydrogen, C1-30-alkyl, C3-8-cycloalkyl, C2-10-alkenyl or aryl, wherein C1-20-alkyl can be unsubstituted or substituted with one or more C3-8-cycloalkyl, C2-10-alkenyl, phenyl, halogen, OR11, NR12R13, SR14, SO3H or COOR15, and aryl can be unsubstituted or substituted with one or more halogen, C1-10-alkyl, halogenated C1-10-alkyl, C3-8-cycloalkyl C2-10-alkenyl, phenyl, OR11, NR12R13, SR14, SO3H or COOR15, wherein R11, R12, R13, R14 anType: GrantFiled: March 5, 2008Date of Patent: October 21, 2014Assignee: Datalase, Ltd.Inventors: Allan Francis Cunningham, Thomas Ehlis, Jean-Luc Birbaum, Pascal Hayoz, Kamalesh Pai Fondekar
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Patent number: 8853314Abstract: The invention relates to a powder composition comprising particles of a) an alkali metal tungsten bronze, b) tungsten oxide, and c) tungsten metal, a method for the preparation of said powder composition, and to the use of said powder composition in form of a dispersion in a polymer material or article for heat shielding, or to increase the heat-input amount of near infrared radiation in processes selected from laser welding of plastics, NIR curing of coatings, drying of printing inks, fixing of ink toners to a substrate, heating of plastic performs, laser marking of plastics or paper.Type: GrantFiled: October 14, 2009Date of Patent: October 7, 2014Assignee: Datalase Ltd.Inventors: Marc Mamak, Urs Lehmann, Ralf Knischka, Francesca Peri, Adolf Käser
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Publication number: 20140242290Abstract: A laser-markable composition comprises a binder and an oxyanion of a multivalent metal.Type: ApplicationFiled: May 6, 2014Publication date: August 28, 2014Applicant: DataLase Ltd.Inventor: Nazir KHAN
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Patent number: 8753791Abstract: A laser-markable composition comprises a binder and an oxyanion of a multivalent metal.Type: GrantFiled: February 28, 2006Date of Patent: June 17, 2014Assignee: Datalase Ltd.Inventor: Nazir Khan
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Patent number: 8698863Abstract: Laser-markable compositions and methods for providing an image on a substrate are provided. A laser-markable composition can include a pigment, a solvent, and a conductive polymer that absorbs IR radiation. This can be used to mark a substrate, using a low-energy laser. Irradiation can be by means of a near-IR laser source, and the conductive polymer can absorb radiation and transfer heat to the pigment.Type: GrantFiled: December 13, 2011Date of Patent: April 15, 2014Assignee: Datalase Ltd.Inventors: Nazir Khan, Martin Robert Walker
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Patent number: 8663902Abstract: A method of forming an image on a substrate, which comprises applying to the substrate an activatable color forming compound wherein said activatable color forming compound is initially unreactive but becomes reactive upon activation; activating said color forming compound in the areas of the substrate where the image is to be formed, and, reacting the activated color forming compound into its colored form to produce an image. A substrate imaged using this method is also provided.Type: GrantFiled: April 1, 2010Date of Patent: March 4, 2014Assignee: Datalase LtdInventors: Anthony Jarvis, Martin Walker, Christopher Wyres, Tristan Phillips
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Patent number: 8637114Abstract: A method of manufacturing a paper substrate comprising a color former which is capable undergoing a light activated color change reaction, wherein the color former is applied to the paper substrate during the manufacture of said paper substrate, and the color former is a metal oxyanion or a molecular organic. A paper substrate obtainable by this method is also provided.Type: GrantFiled: August 26, 2009Date of Patent: January 28, 2014Assignee: Datalase LtdInventors: Christopher Wyres, Anthony Jarvis, Martin Walker, William Green
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Patent number: 8637429Abstract: The invention relates to a method of marking a substrate comprising treating the substrate with a boron compound and a charrable agent, and, irradiating the areas of the substrate to be marked such that those areas change colour. Marked substrates obtainable by this method are also provided.Type: GrantFiled: August 26, 2009Date of Patent: January 28, 2014Assignee: Datalase LtdInventors: Martin Walker, Anthony Jarvis, Christopher Wyres, William Green
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Patent number: 8557510Abstract: A composition comprising i) a color forming component which is susceptible to changing color when irradiated; ii) an amine neutralised alkylaromatic sulphonic acid; and iii) a binder. Methods of marking a substrate comprising incorporating within or applying to a substrate the composition of this invention, and substrates coated with the composition, are also provided.Type: GrantFiled: August 26, 2009Date of Patent: October 15, 2013Assignee: Datalase Ltd.Inventors: Martin Walker, Anthony Jarvis
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Patent number: 8507178Abstract: The invention relates to use of a diacetylene compound as a color former wherein the diacetylene compound has one of general formulae (I) to (V). The invention also includes methods of imparting color to a material including a compound as defined above, which comprises subjecting the material to irradiation.Type: GrantFiled: July 2, 2009Date of Patent: August 13, 2013Assignee: Datalase, LtdInventors: Anthony N Jarvis, Christopher Anthony Wyres
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Patent number: 8420282Abstract: A method for producing a color filter, comprising: applying to a substrate at least one diacetylene capable of undergoing a light-activated color change reaction, and exposing the substrate to light thereby causing the exposed regions of the substrate to change color. The invention also provides devices comprising colored filters such as liquid crystal displays.Type: GrantFiled: July 2, 2009Date of Patent: April 16, 2013Assignee: Datalase LtdInventors: Anthony N Jarvis, Martin Walker
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Patent number: 8398760Abstract: A composition susceptible to changing color upon the application of energy, wherein the composition comprises a color former and a tinting colorant, wherein the tinting colorant has a complementary color to that of the composition comprising the color former without tinting colorant. Preferably, the composition 5 also comprises an energy absorbing additive. The invention also provides a method of improving contrast when a composition susceptible to changing color is imaged.Type: GrantFiled: August 26, 2009Date of Patent: March 19, 2013Assignee: Datalase Ltd.Inventor: Anthony Jarvis