Patents by Inventor Zhimin Hao

Zhimin Hao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030140820
    Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as coloured materials for any known purposes.
    Type: Application
    Filed: January 2, 2003
    Publication date: July 31, 2003
    Inventors: Patrice Bujard, Veronique Hall-Goulle, Zhimin Hao, Hitoshi Nagasue, Gerardus De Keyzer
  • Patent number: 6576768
    Abstract: Preparation of alkylthio and/or arylthio-substituted diketo-diaryl-pyrrolopyrroles (DPPs) of the formula Ia and dithio-bridged bis-diketo-diaryl-pyrrolopyrroles (bis-DPPs) of the formula Ib in which in formula Ia G is phenyl substituted by at least one arylthio or alkylthio group, and G1 is G or a carbocyclic or heterocyclic radical, by reacting a haloaryl with a thiol or thiolate, and in formula Ib G5 is a phenylene, G6 is G1 but not G, and G7 is alkylene, cycloalkylene or phenylene, by reacting two haloaryls with a dithiol or dithiolate, which comprises reacting a thiol or thiolate with a halo-diketo-diaryl-pyrrolopyrrole (“halo-DPP”) of the formula IIa in which G2 is a halogenated phenyl group and G3 is G2 or G1, or reacting a dithiol or dithiolate with two halo-diketo-diaryl-pyrrolopyrroles (“halo-DPPs”) of the formula IIb in which Hal is halogen such as fluorine, chlorine, bromine or iodine, and G6 is G1, and also novel DPPs a
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: June 10, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, Alain Claude Rochat, Nancy Schlöder-Tebaldi
  • Patent number: 6524382
    Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as colored materials for any known purposes. Soluble pigment precursors comprising a partial structure are also claimed, wherein X1 is an aromatic or heteroaromatic ring, B is hydrogen or a group of the formula but at least one group B is not hydrogen, and L is a solubilizing group.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: February 25, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Patrice Bujard, Véronique Hall-Goulle, Zhimin Hao, Hitoshi Nagasue, Gerardus De Keyzer
  • Publication number: 20030012943
    Abstract: The present invention relates to a colored porous material comprising in its pores an effectively coloring amount of an organic pigment which is obtainable by fragmenting a meltable or solvent-soluble pigment precursor, and to a process for its preparation.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 16, 2003
    Inventors: John Zambounis, Patrick Verhoustraeten, Henri Dubas, Zhimin Hao, Patrice Bujard
  • Publication number: 20020178516
    Abstract: The invention relates to the use of compounds of the formula 1
    Type: Application
    Filed: March 18, 2002
    Publication date: December 5, 2002
    Inventors: Franck Rey Flandrin, Gu-Hua Hu, Philippe Bugnon, Zhimin Hao
  • Patent number: 6486332
    Abstract: Compounds of formula A(B)x,  (I) wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula  and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1. These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: November 26, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6409956
    Abstract: An injection-molding process using warp-free pigment compositions including diaryldiketopyrrolo[3,4-C]pyrroles to improve the dimensional stability of the injection molded product by decreasing warping wherein the constituents of the formulation being injection molded are added into an injection molding machine in ready-premixed form or simultaneously as individual components. Preferred pigments are quinacridone pigments, disazo condensation pigments, isoindolinone pigments and pyrrolo[3,4-C]pyrrole pigments with pyrrolo[3,4-C]pyrrole pigments being especially preferred.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: June 25, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Franck Rey Flandrin, Guo-Hua Hu, Philippe Bugnon, Zhimin Hao
  • Publication number: 20020065401
    Abstract: The invention relates to novel soluble pigment precursors possessing not only higher thermal stability but also improved solubility characteristics and to a process for mass coloration of high temperature polymers that utilizes these novel soluble pigment precursors.
    Type: Application
    Filed: November 20, 2001
    Publication date: May 30, 2002
    Inventors: Leonhard Feiler, Zhimin Hao
  • Patent number: 6355783
    Abstract: The invention relates to novel soluble pigment precursors possessing not only higher thermal stability but also improved solubility characteristics and to a process for mass coloration of high temperature polymers that utilizes these novel soluble pigment precursors. The pigment precursors of the invention are essentially of the formula A(B)x  (I) where x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine or diketopyrrolopyrrole series, this radical being linked with xB groups via one or more heteroatoms, these heteroatoms being selected from the group consisting of N, O and S and forming part of the radical A, and B is hydrogen or a group of the formula although at least one B group is not hydrogen and when x is from 2 to 8 the B groups may be identical or different.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 12, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Leonhard Feiler, Zhimin Hao
  • Publication number: 20010039358
    Abstract: Compounds of formula
    Type: Application
    Filed: February 6, 2001
    Publication date: November 8, 2001
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6284036
    Abstract: The present invention relates to a process for pigmenting a porous sintered material comprising boride, carbide, silicide, nitride or phosphide compounds by applying a solution of a soluble pigment derivative to the non-coloured sintered material and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the sintered material's pores, as well as to the new pigmented sintered materials themselves.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: September 4, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Seiji Homma, Hans-Thomas Schacht, Zhimin Hao
  • Publication number: 20010012559
    Abstract: The present invention relates to a coloured porous material comprising in its pores an effectively colouring amount of an organic pigment which is obtainable by fragmenting a meltable or solvent-soluble pigment precursor, and to a process for its preparation. The present invention also relates to the use of the instant coloured porous material powders as pigments for high molecular weight organic materials.
    Type: Application
    Filed: June 11, 1998
    Publication date: August 9, 2001
    Inventors: JOHN ZAMBOUNIS, PATRICK VERHOUSTRAETEN, HENRI DUBAS, ZHIMIN HAO, PATRICE BUJARD
  • Patent number: 6271401
    Abstract: Compounds of formula A(B)x,  (I), wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1. These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: August 7, 2001
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6261359
    Abstract: Compounds of formula A(B)x,   (I), wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: July 17, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6248165
    Abstract: Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different diketopyrrolopyrrole pigments.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: June 19, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Shivakumar Basalingappa Hendi, Fridolin Bäbler, Zhimin Hao, Abul Iqbal
  • Patent number: 6180315
    Abstract: Novel compositions for making structured color images and application thereof Compositions for making structured color images comprising (a) a soluble pigment precursor which can be transformed to an insoluble pigment by means of chemical, thermal, photolytic or radiation-induced method, and (b) a binder polymer or prepolymer, or a positive or negative resist-type resin which can be structured by crosslinking, polymerization or depolymerization by applying heat or electromagnetic irradiation. The compositions can be applied to optical and thermal recording, printing, and the production of color filters for Liquid Crystal Displays, with high accuracy, high transparency and high stability.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: January 30, 2001
    Assignee: Ciba Specialty Chemcials Corporation
    Inventors: Ulrich Sch{umlaut over (a)}deli, John S. Zambounis, Abul Iqbal, Zhimin Hao, Henri Dubas
  • Patent number: 6160037
    Abstract: Pigment composition obtainable by(a) mixing a latent pigment with a polymerizable substance, and(b) treating the mixture of step (a) with heat while mixing the reaction mixture, and(c) cooling the treated reaction mixture to room temperature, and, if desired, working up the obtained pigment composition, a process for its preparations, its use and compositions comprising it.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: December 12, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Johannes Leugs, Zhimin Hao, Abul Iqbal
  • Patent number: 6127549
    Abstract: Compounds of formula:A(B).sub.x, (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula: ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m und n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: October 3, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6120944
    Abstract: The invention relates to a color-pigmented high molecular weight organic material structured from a radiation-sensitive precursor by irradiation, the pigmentation of which material consists of extremely fine particles, at least 80 mol % of the pigmentation consisting of a pigment of the class diketopyrrolopyrrole, dioxazine, isoindoline, isoindolinone, disazo condensation yellow or benzimidazolonazo, each containing at least one --NHCO-- group, and, where appropriate, a second pigment of the class diketopyrrolopyrrole, dioxazine, isoindoline, isoindolinone, benzimidazolonazo, disazo or phthalocyanine, and, when the structure of the main pigment is point-symmetrical, the two pigments being present in a balanced molar ratio of from 1:1 to 7:3. Those materials are used preferably in the form of thin layers which are built up in patterns in one or more layers on a transparent substrate and can be used, for example, as optical color filters.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: September 19, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Ulrich Schadeli, Eric Tinguely, Veronique Hall-Goulle, Heinz Wolleb, Zhimin Hao, Abul Iqbal
  • Patent number: 6040108
    Abstract: Compositions for making structured color images comprising(a) a soluble pigment precursor which can be transformed to an insoluble pigment by means of chemical, thermal, photolytic or radiation-induced method, and(b) a binder polymer or prepolymer, or a positive or negative resist-type resin which can be structured by crosslinking, polymerization or depolymerization by applying heat or electromagnetic irradiation.The compositions can be applied to optical and thermal recording, printing, and the production of color filters for Liquid Crystal Displays, with high accuracy, high transparency and high stability.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: March 21, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Ulrich Schadeli, John S. Zambounis, Abul Iqbal, Zhimin Hao, Henri Dubas