Patents Assigned to Angstrom Technologies
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Patent number: 10082744Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: November 20, 2017Date of Patent: September 25, 2018Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9823594Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: October 17, 2016Date of Patent: November 21, 2017Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9470997Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: August 10, 2015Date of Patent: October 18, 2016Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9104126Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: September 16, 2013Date of Patent: August 11, 2015Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 8717625Abstract: A system for printing and emissive image on a substrate that includes red, green, and blue additive-color emissive inks configured to be printed to a substrate using an ink printer device intended for use with subtractive-color ink. An image to be printed can be converted to color negative form prior to printing using the subtractive-color ink printer. The system may include a subtractive-color ink printer intended for use with subtractive-color ink cartridges. The system may also include a computer device programmed to convert an image to a color negative form.Type: GrantFiled: October 8, 2012Date of Patent: May 6, 2014Assignee: Angstrom Technologies, Inc.Inventor: William J. Coyle
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Publication number: 20140038101Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: ApplicationFiled: September 16, 2013Publication date: February 6, 2014Applicant: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 8535865Abstract: An emissive toner composition for producing an emissive image component of an image indicia on a substrate. The emissive toner composition includes a photoluminescent agent, a charge control agent, and one or more additives, each selected and present in an amount such that when the toner composition is printed to produce an image component on a substrate, the toner composition has stable spectral characteristics. In one embodiment, the emission spectra of the image component printed on the substrate, for irradiation with an excitation energy includes only dominant emission peaks corresponding to one or more emission peaks of the photoluminescent agent. In another embodiment, the image component has a photoluminescent toner stability factor of about greater than or equal to 25.Type: GrantFiled: August 20, 2008Date of Patent: September 17, 2013Assignee: Angstrom Technologies, Inc.Inventors: William Coyle, Anthony Stramondo
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Publication number: 20130027723Abstract: A system for printing and emissive image on a substrate that includes red, green, and blue additive-color emissive inks configured to be printed to a substrate using an ink printer device intended for use with subtractive-color ink. An image to be printed can be converted to color negative form prior to printing using the subtractive-color ink printer. The system may include a subtractive-color ink printer intended for use with subtractive-color ink cartridges. The system may also include a computer device programmed to convert an image to a color negative form.Type: ApplicationFiled: October 8, 2012Publication date: January 31, 2013Applicant: ANGSTROM TECHNOLOGIES, INC.Inventor: Angstrom Technologies, Inc.
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Publication number: 20110267656Abstract: A method of marking a substrate with an emissive image wherein the substrate includes optical brighteners, the substrate having applied thereon a substance having one or more fluorescent quenchers and a quench prevention substance. An emissive color component is applied over at least a portion of the quench prevention substance. An article with authentication features may include a substrate having a layer of one or more fluorescent quenchers, a layer of a quench prevention substance, and an emissive image component. An article with authentication features may be used to authenticate the article using an emissive image produced from an emissive color component positioned over at least a portion of a quench prevention substance.Type: ApplicationFiled: October 25, 2010Publication date: November 3, 2011Applicant: ANGSTROM TECHNOLOGIES, INC.Inventor: William J. Coyle
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Patent number: 7821675Abstract: An article is marked with image indicia for authentication, information, or decoration by providing a plurality of inks having a plurality of fluorescence colors when exposed to excitation energy, separating colors of the image indicia into a plurality of image levels in accordance with the fluorescence colors of the inks, and printing each image level in mutual registration on the article using the corresponding ink. The image printed with each ink may be substantially invisible under illumination within the visible spectrum. The invisibly printed images have multiple authentication features, including the use of covert UV-fluorescent materials, IR-fluorophores, microparticles, and other chemical taggants. Ink compositions, methods for making the inks, and methods and apparatus for using the inks are also disclosed.Type: GrantFiled: April 5, 2004Date of Patent: October 26, 2010Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, John C. Smith
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Publication number: 20040233465Abstract: An article is marked with image indicia for authentication, information, or decoration by providing a plurality of inks having a plurality of fluorescence colors when exposed to excitation energy, separating colors of the image indicia into a plurality of image levels in accordance with the fluorescence colors of the inks, and printing each image level in mutual registration on the article using the corresponding ink. The image printed with each ink may be substantially invisible under illumination within the visible spectrum. The invisibly printed images have multiple authentication features, including the use of covert UV-fluorescent materials, IR-fluorophores, microparticles, and other chemical taggants. Ink compositions, methods for making the inks, and methods and apparatus for using the inks are also disclosed.Type: ApplicationFiled: April 5, 2004Publication date: November 25, 2004Applicant: Angstrom Technologies, Inc.Inventors: William J. Coyle, John C. Smith
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Patent number: 6603871Abstract: A system (10) is provided for performing first order authentication of articles marked with indicia (30) discernible in visible, ultraviolet, or infrared light or tagged with UV- or IR-sensitive chemicals. The first-order authentication system provides reliable visual authentication by providing for juxtaposition of the article-under-test (20) with a known reference-standard sample-specimen (90, 100, or 300), while the article-under-test (20) is illuminated by a suitable source (65 or 250) of radiation in the visible, ultraviolet, or infrared portions of the electromagnetic spectrum. Thus, the system (10) facilitates comparison to differentiate a genuine article from a counterfeit article with first-order accuracy but at a substantially lower cost than that of automated authentication systems. Additionally, the system can be used in both portable and desk top embodiments.Type: GrantFiled: March 28, 2001Date of Patent: August 5, 2003Assignee: Angstrom Technologies, Inc.Inventor: Louis H. Liang
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Patent number: 6470093Abstract: A system (10) is provided for performing first order authentication of articles marked with indicia (30) discernible in visible, ultraviolet, or infrared light or tagged with UV- or IR-sensitive chemicals. The first-order authentication system provides reliable visual authentication by providing for juxtaposition of the article-under-test (20) with a known reference-standard sample-specimen (90, 100, or 300), while the article-under-test (20) is illuminated by a suitable source (65 or 250) of radiation in the visible, ultraviolet, or infrared portions of the electromagnetic spectrum. Thus, the system (10) facilitates comparison to differentiate a genuine article from a counterfeit article with first-order accuracy but at a substantially lower cost than that of automated authentication systems. Additionally, the system can be used in both portable and desk top embodiments.Type: GrantFiled: March 28, 2001Date of Patent: October 22, 2002Assignee: Angstrom Technologies, Inc.Inventor: Louis H. Liang
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Patent number: 6373965Abstract: An authentication system combines a source of ultraviolet light (and optionally a scanning mechanism) with apparatus for capturing and recognizing either graphic images or characters or both, where the graphic images and/or characters have been previously made with fluorescent substances that may be invisible under ordinary visible light, but are rendered detectable by the ultraviolet light. As in conventional optical character recognition (OCR), the characters may be conventional alphanumeric characters readable by human readers once they are made visible. The authentication system has a housing enclosing its optical path, a source of UV light, a detector for detecting graphic images or characters, conversion of the detector signal to digital form, a memory storing predetermined indicia, recognition logic, and indicating means. The system may also include a scanning mechanism and optical filters to select predetermined wavelengths of fluorescent light.Type: GrantFiled: October 27, 1999Date of Patent: April 16, 2002Assignee: Angstrom Technologies, Inc.Inventor: Louis H. Liang
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Patent number: 6297502Abstract: A method for controlling a force acting on a scanning probe of a cantilever by setting bandwidth of a feedback loop constituted by detecting minute displacement of the cantilever and controlling a force of the scanning probe to be greater than a primary resonant frequency of the cantilever.Type: GrantFiled: February 26, 1999Date of Patent: October 2, 2001Assignees: Angstrom Technology Partnership, International Business Machines CorporationInventors: Suzanne Philippa Jarvis, Mark Alfred Lantz, Urs Duerig
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Patent number: 6166947Abstract: A manganese oxide material has MnO.sub.3 as a matrix. It is an antiferromagnetic insulator and, when subjected to an electrical current or electric field, it is transformed into a ferromagnetic metal.Type: GrantFiled: June 18, 1999Date of Patent: December 26, 2000Assignees: Agency of Industrial Science and Technology Ministry of International Trade & Industry, Angstrom Technology Partnership, Sanyo Electric Co., Ltd.Inventors: Atsushi Asamitsu, Yasuhide Tomioka, Hideki Kuwahara, Yoshinori Tokura
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Patent number: 6136457Abstract: A manganese oxide material that can be used as a switching device or as a memory device or the like is formed of Mn-based oxide material. The Mn-based oxide material exhibits insulator-to-metal transitions induced by irradiating the material with laser light.Type: GrantFiled: March 16, 1998Date of Patent: October 24, 2000Assignees: Agency of Industrial Science and Technology Ministry of International Trade and Industry, Angstrom Technology PartnershipInventors: Kenjiro Miyano, Takehito Tanaka, Yoshinori Tokura, Yasuhide Tomioka
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Patent number: 6137395Abstract: A magnetoresistor with an ordered double perovskite structure is an oxide crystal which has an ordered double perovskite crystal structure represented by the general formula of A.sub.2 BB'O.sub.6, wherein A stands for Sr atoms, B for Fe atoms and B' for Mo or Re atoms and wherein the Fe atoms and the Mo or Re atoms are alternately arranged and which exhibits negative magnetoresistive characteristics.Type: GrantFiled: March 26, 1999Date of Patent: October 24, 2000Assignees: Agency of Industrial Science and Technology, Ministry of International Trade and Industry, Mitsubishi Electric Corporation, Angstrom Technology PartnershipInventors: Keiichiro Kobayashi, Yoshinori Tokura, Tsuyoshi Kimura, Yasuhide Tomioka
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Patent number: 5942286Abstract: The present invention provides a method for selectively allowing film-forming molecules to be chemically adsorbed onto an Si substrate to produce a good and robust organic monomolecular film, wherein molecules with SH groups are chemically adsorbed onto the Si substrate to form a monomolecular film of the molecules by heating an As molecular beam source 4 to allow a monoatomic layer thickness of arsenic to be adsorbed onto the clean surface of the Si substrate set on a sample stage 3 and then immersing the Si substrate terminated by arsenic in a solution containing molecules with SH groups.Type: GrantFiled: October 18, 1996Date of Patent: August 24, 1999Assignees: Agency of Industrial Science and Technology, Angstrom Technology Partnership, Sharp CorporationInventors: Hirotaka Ohno, Shangjr Gwo, Hiroshi Tokumoto
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Patent number: D453175Type: GrantFiled: June 7, 2001Date of Patent: January 29, 2002Assignee: Angstrom Technologies, Inc.Inventor: Louis H. Liang