Specified Color Former (i.e., Electron Donating) Patents (Class 106/31.2)
  • Patent number: 11541683
    Abstract: A method of reusing a notebook provides a notebook having a synthetic-paper page. The method also provides a thermochromic ink pen which, when used to write on the synthetic paper page, leaves thermochromic ink markings. The method further provides a moisture carrier configured to have a liquid diffused therein. The moisture carrier is configured to erase the thermochromic ink markings from the synthetic-paper page by contacting the thermochromic ink markings when the moisture carrier is moist. The method then writes with thermochromic ink on at least a portion of the synthetic-paper page. Liquid is diffused in the moisture carrier, and the portion of the synthetic-paper page having the thermochromic ink is wiped with the moist moisture carrier, such that the thermochromic ink is erased from the synthetic-paper page.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: January 3, 2023
    Assignee: Rocket Innovations, Inc.
    Inventors: Joseph Lemay, Jacob Epstein
  • Patent number: 11267978
    Abstract: To provide a reversibly thermochromic aqueous ink composition excellent in dispersion stability of a reversibly thermochromic microcapsule pigment and a writing instrument using the same. Disclosed is a reversibly thermochromic aqueous ink composition comprising a reversibly thermochromic microcapsule pigment encapsulating a reversibly thermochromic composition comprising (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium to determine an occurrence temperature of a coloring reaction of the component (a) and the component (b), and a vehicle comprising water and a specific gravity adjuster selected from the group consisting of an oxyacid belonging to Group 6 having an atomic weight of 90 to 185 or salt thereof.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 8, 2022
    Assignees: KABUSHIKI KAISHA PILOT CORPORATION, THE PILOT INK CO., LTD.
    Inventors: Katsuyuki Fujita, Yasuaki Kambe, Masayuki Mita, Tomoyuki Yamamura
  • Patent number: 10577323
    Abstract: A compound represented by the following formula (1).
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: March 3, 2020
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kana Okada, Junya Horiuchi, Takashi Makinoshima, Masatoshi Echigo
  • Patent number: 10497938
    Abstract: The present invention relates to a battery that includes at least one electrochemical cell. The at least one electrochemical cell includes a first electrode, a second electrode, a first electroactive material, a second electroactive material, and an electrolyte which is in contact with both electrodes, and at least one of the first electroactive material and the second electroactive material includes a radialene compound. Also provided is an electroactive material as well as a radialene compound.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: December 3, 2019
    Assignee: Novaled GmbH
    Inventors: Sofiane Bouazza, Carla Bobbio, Ansgar Werner
  • Patent number: 10357574
    Abstract: The present invention provides methods and compositions based on optical sensor conjugates that are useful for detecting reactive oxygen, reactive nitrogen, or both species that are a direct result of inflammation caused by tissue damage.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: July 23, 2019
    Assignee: The General Hospital Corporation
    Inventors: Scott A. Hilderbrand, Ralph Weissleder, Peter Panizzi, Jason R. McCarthy
  • Patent number: 9938799
    Abstract: A method includes designing a subsea equipment assembly having an insulation covering an outer surface of at least one equipment unit and a flow path formed through the at least one equipment unit. The designing includes modeling a temperature profile of the subsea equipment assembly having a fluid within the flow path, identifying at least one hot zone along an interface between the insulation and the outer surface, where the at least one hot zone is exposed to temperatures above a degradation temperature of the insulation, and designing at least one cold zone along the interface to border the at least one hot zone, the at least one cold zone exposed to maximum temperatures below the degradation temperature of the insulation.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: April 10, 2018
    Assignee: FMC Technologies, Inc.
    Inventors: Elizabeth Whitsitt, Carlos Ardenis Silva-Hernandez, Matthew R. Herst, Warren P. Jones, Frank Wabnitz
  • Patent number: 9222015
    Abstract: A thermochromic coating which comprises a thermochromic compound and a polyurea resin. The thermochromic compound and polyurea resin form a thermochromic layer. The coating optionally has a protective layer containing a resin and a UV-blocking material arranged on top of the thermochromic layer. A reflective layer containing a reflective material is optionally arranged between the thermochromic layer and the substrate. A thermochromic coating is formed by applying successive reflective, thermochromic, and protective layers on a substrate.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 29, 2015
    Assignee: SWIFT RIVER PROPERTIES, LLC
    Inventors: John C. Becker, IV, Richard S. Himmelwright
  • Patent number: 9126451
    Abstract: A thermal recording material having a heat-sensitive color-forming layer that contains a phosphate modifier in addition to an activator and lueco dye can provide good imaging. The phosphate modifier such as unsubstituted dibenzyl phosphate can be paired with an activator such 3-(4-hydroxyphenyl)propionic acid to provide an environmentally friendly thermal recording material.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 8, 2015
    Assignee: APPVION, INC.
    Inventors: Fadi Chakar, John Charles Warner, Justin Robert Whitfield, Michelle Wanchi Li Lugus, Deboshri Banerjee
  • Patent number: 9034089
    Abstract: 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: Grant
    Filed: August 12, 2011
    Date of Patent: May 19, 2015
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Anthony Jarvis, Martin Walker, Adam O'Rourke, Richard Cook
  • Patent number: 8652244
    Abstract: Developing compositions are provided herein for use in producing a visibly detectable image of a latent physiological biometric. The developing compositions include a carrier solvent that includes at least one C3-C4 hydrofluorocarbon olefin or at least one hydrochlorofluorocarbon olefin.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: February 18, 2014
    Assignee: Honeywell International Inc.
    Inventors: David Nalewajek, Andrew Joseph Poss, Rajiv Ratna Singh, Cheryl Cantlon
  • Publication number: 20130116644
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 8303857
    Abstract: The invention relates to a composite with inverse thermochromic properties, the composite changing from a colorless into a colored state with increasing temperature. The composite thereby contains a colorant, a developer and a fluxing agent and also an inorganic filler. The invention likewise relates to a composite material which contains a polymer-based matrix into which at least one composite with inverse thermochromic properties is doped. These composite materials are used in the field of sensor technology, solar technology, transport and communications technology and medical technology.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: November 6, 2012
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Arno Seeboth, Olaf Mühling, Ralf Ruhmann, Renate Vetter
  • Publication number: 20090269478
    Abstract: A method and composition for transforming a latent physiological biometric into a visible physiological biometric are provided, the method comprising: providing a latent biometric disposed on a surface of an article, wherein said biometric comprises at least one eccrine-derived compound; contacting said latent biometric with a developing solution, wherein said developing solution comprises at least one imaging reagent selected from ninhydrin and 1,8-diazafluoren-9-one and a carrier solvent comprising at least one C3-C4 hydrofluorocarbon; and reacting said imaging reagent with said eccrine-derived compound to produce a visible physiological biometric.
    Type: Application
    Filed: April 11, 2009
    Publication date: October 29, 2009
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: David Nalewajek, Cheryl L. Cantlon, Andrew J. Poss, Rajiv Ratna Singh, Ian Shankland
  • Patent number: 7329630
    Abstract: Compositions and methods for production of color images having increased light stability and reduced browning are described. The color forming composition can include a leuco dye, an infrared absorber, and at least one of a stabilizer and an anti-fade agent. The color forming compositions can be stabilized such that less than about a 30% decrease in optical density occurs over a three year period. The stabilizers can include chroman, thiolane-nickel complexes, spiroindanes, while suitable anti-fade agents can include vitamin E, vitamin E analogs, astaxanthin, chroman, ascorbic acid, carotene, and mixtures thereof. The color forming compositions are ambient light stable and are useful in forming images on a wide variety of substrates such as optical disks.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 12, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Publication number: 20070270310
    Abstract: In one aspect, a method includes directing electromagnetic radiation to a structure, the structure including a substrate, a first layer, and a marking composition between the substrate and the first layer. At least a portion of the electromagnetic radiation is transmitted through the first layer, and the structure is marked.
    Type: Application
    Filed: May 22, 2006
    Publication date: November 22, 2007
    Inventors: David H. Blank, Benjamin J. Brown, Michael P. Secord, James W. Foley
  • Publication number: 20070245925
    Abstract: A no-mess water-based ink including a composition including water, an organic solvent, a coloring agent dissolved in the organic solvent, an emulsifier and a thickening agent for use in conjunction with a specially treated substrate containing a color developer.
    Type: Application
    Filed: August 3, 2006
    Publication date: October 25, 2007
    Inventors: Jie Li, Leena Vadaketh, Jacqueline Aseng
  • Patent number: 6890377
    Abstract: Rylene dyes of the general formula I where R is hydrogen; unsubstituted or substituted C1-C30-alkyl, aryl or hetaryl; R? is unsubstituted or substituted C2-C30-alkyl or C5-C8-cycloalkyl, or substituted methyl; n is 0 or 1, their preparation and use for coloring high-molecular-weight organic and inorganic materials, and aminorylene-3,4-dicarboximide of the formula IV as their intermediates.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: May 10, 2005
    Assignees: BASF Aktiengesellschaft, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Arno Böhm, Matthias Krieger, Stefan Becker, Klaus Müllen
  • Patent number: 6846619
    Abstract: There is provided a leuco dye dispersion liquid for a thermosensitive recording material wherein the leuco dye is being dispersed with an anionic surfactant and an nonionic surfactant, while average particle diameter of the leuco dye ranges from 0.10 ?m to 0.30 ?m and content of particles less than or equal to 0.07 ?m in diameter of the dye is not greater than 1.0%. The leuco dye dispersion liquid shows no fogging, and can cause a high optical density of image on thermosensitive member with excellent brightness in background area, and a high durability for storage at elevated temperature.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: January 25, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshikazu Kaneko, Yasutomo Mori, Kunio Hayakawa, Mitsunobu Morita, Takeshi Kajikawa, Shuuji Miyamoto, Yuuichi Kawaguchi
  • Patent number: 6793721
    Abstract: An invisible ink composition and a method to ensure document confidentiality. The invisible ink composition includes a carrier as a solvent; and at least one leuco dye evenly dispersing in the carrier. The invisible ink becomes visible while the leuco dye is combined with a weak acidic developer.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: September 21, 2004
    Assignee: Benq Corporation
    Inventors: Yu-Chang Shen, In-Shan Sir, Chia-Hsin Chien, Yu-Ting Lin
  • Publication number: 20040116213
    Abstract: There are described articles bearing indicia applied with an ink composition which comprises two or more color-changing or color-forming components which combine, or become diluted, upon exposure to water for a sufficient period of time to cause a change in the appearance of the indicia. Also described are printing ink compositions for forming such indicia and methods for forming such articles.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 17, 2004
    Inventors: Michael P. Filosa, Fariza B. Hasan, Stephen J. Telfer
  • Patent number: 6566302
    Abstract: A monophase solid solution comprising a plurality of color formers selected from the group consisting essentially of the fluoran type, phthalide type, phenoxazine type, phenothiazine type, rhodamine lactam type, leuco-auramine type, triphenylmethane type, spiropyran type, benzoxazine type, quinazoline type of color formers and mixtures thereof, preferably wherein the color forming materials are selected from the fluoran and phthalide type of color former and mixtures thereof.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James Philip Taylor, Michael Heneghan
  • Publication number: 20030089270
    Abstract: An invisible ink composition and a method to ensure document confidentiality are disclosed. The invisible ink composition includes a carrier as a solvent; and at least one leuco dye evenly dispersing in the carrier. The invisible ink becomes visible while the leuco dye combines with a weak acidic developer.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 15, 2003
    Inventors: Yu-Chang Shen, In-Shan Sir, Chia-Hsin Chien, Yu-Ting Lin
  • Patent number: 6489375
    Abstract: An Offset Lithographic Printing Process employing low VOC lithographic printing ink formulations containing monomeric diluents, curable by cationic polymerization in the presence of fountain solution and resin rheology modifiers compatible with cationic catalysts.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 3, 2002
    Assignee: Sun Chemical Corporation
    Inventors: Edward Stone, Gordon Kotora, Mikhail Laksin, Subhankar Chatterjee, Bhalendra J. Patel
  • Publication number: 20020166477
    Abstract: An inkless fingerprint compound includes a solvent, a color former, such as a transistion metal salt, compatible with the solvent and a developer such as hydroxiquinoline and derivatives, the developer capable of reacting with the color former to form a colorant product, preferably black in color. A sufficient amount of a chelating agent, such as a carboxylic acid, is added to the solution to prevent the color former and developer from reacting while in solution to form the colorant product while permitting such reaction when the solution is applied to the fingerprint area of the person to be fingerprinted and deposited onto a paper substrate.
    Type: Application
    Filed: May 10, 2001
    Publication date: November 14, 2002
    Inventor: Douglas C. Arndt
  • Publication number: 20020009547
    Abstract: An object of the present invention is to provide a coating liquid for forming a transparent topcoat, without requiring a hardening or fixing process that uses heating of UV radiation, and imparting light resistance, water resistance, fixation, and glossiness to recordings, together with a recording method therefor, and recordings produced thereby.
    Type: Application
    Filed: April 10, 2001
    Publication date: January 24, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Fumitsugu Ito, Masahiro Yatake, Hidehiko Komatsu, Hitoshi Ota, Kazuhiko Hara