Patents by Inventor John S. Zambounis

John S. Zambounis 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: 20080130474
    Abstract: The invention relates to an optical recording medium comprising a substrate, a recording layer and optionally one or more reflecting layers, wherein the recording layer comprises a compound of formula (I). For the detailed definitions of the further substituents, see the description. Recording and playback are effected especially at a wavelength of from 300 to 500 nm, for example using a blue laser. The recording and playback quality is excellent and allows a high storage density even at high speeds.
    Type: Application
    Filed: June 25, 2004
    Publication date: June 5, 2008
    Inventors: Beat Schmidhalter, John S. Zambounis, Heinz Wolleb, Annemarie Wolleb, Frank Bienewald, Jean-Luc Budry, Heinz Spahni
  • 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
  • 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: 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: 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: 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: 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
  • Patent number: 6013777
    Abstract: Compounds of formulaA(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 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: June 10, 1998
    Date of Patent: January 11, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 6013776
    Abstract: Compounds of formulaA(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 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: June 2, 1998
    Date of Patent: January 11, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5886160
    Abstract: Compounds of formulaA(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 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: June 12, 1998
    Date of Patent: March 23, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5879855
    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: November 18, 1994
    Date of Patent: March 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Ulrich Schadeli, John S. Zambounis, Abul Iqbal, Zhimin Hao
  • Patent number: 5874580
    Abstract: Compounds of formulaA(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: February 23, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5811543
    Abstract: Compounds of the formulaA(B).sub.x (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the phthalocyanine series, which radical contains x B groups attached to N-atoms, preferably with at least one directly adjacent to or conjugated with a carbonyl group,B is a group of the formula ##STR1## and, if x is 2,3 or 4, may also be one, two or three hydrogen atoms, wherein the symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, Y, Z, m and n, are as defined in the disclosureThese 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: September 22, 1998
    Assignee: Ciba Speciality Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5780627
    Abstract: Compounds of formulaA(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: July 9, 1996
    Date of Patent: July 14, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5755875
    Abstract: Compounds selected from the series consisting of the perylenecarboximide, quinacridone, isoindoline, indigoid, azo, benzodipyrrolone, benzodifuranone, furanofuran, pyrrolo?2,5-b!pyrrole and bianthraquinone chromophores containing at least one grouping of formula ##STR1## wherein each A may be N--CN or O, with the proviso that at least one A must be N--CN, X is --N(R)--, --O-- or --S--, R is hydrogen, C.sub.1 -C.sub.18 alkyl, unsubstituted or halogen- or C.sub.1 -C.sub.4 alkyl-substituted phenyl, benzyl or phenethyl, and m and n are each independently of the other 0 or 1.Depending on the nature of their substituents, these compounds can be used as polymer-soluble dyes or as pigments for coloring high molecular weight organic material. They are distinguished by a surprisingly high solid-state fluorescence.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: May 26, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: John S. Zambounis, Zhimin Hao, Abul Iqbal
  • Patent number: 5723626
    Abstract: Compounds of formulaA(B).sub.x, (I),whereinx 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: July 9, 1996
    Date of Patent: March 3, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5616725
    Abstract: Pyrrolo[3,4-c]pyrroles of formula ##STR1## wherein D and E are each independently of the other a group of formula ##STR2## The symbols Q, R.sub.8, R.sub.9, R.sub.10, R.sub.11, X, Y, Z, m and n are as defined in claim 1.These pyrrolo[3,4-c]pyrroles are distinguished by outstanding solid state fluorescence in the UV range as well as by the ease with which they can be converted to pyrrolopyrrole pigments even in the substrate in which they are incorporated.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: April 1, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: John S. Zambounis, Zhimin Hao, Abul Iqbal
  • Patent number: 5561232
    Abstract: Compounds of formulaA(B).sub.x, (I),whereinx 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 and n, are as defined in claim 1. These carbamate group-containing soluble chromophores am 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: October 6, 1994
    Date of Patent: October 1, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
  • Patent number: 5527922
    Abstract: The invention relates to pyrrolo[3,4-c]pyrroles of formula ##STR1## wherein D and E are each independently of the other hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.7 -C.sub.10 aralkyl, unsubstituted phenyl or phenyl which is substituted by chloro, bromo, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl or nitro, or --COO--C.sub.1 -C.sub.5 alkyl or a group --COOR.sub.8,wherein R.sub.8 is benzyl, piperidyl or a group ##STR2## and X and Y are N--CN or O, with the proviso that at least one of X or Y N--CN must be N--CN.These pyrrolo[3,4-c]pyrroles are preeminently suitable for use as colorants, i.e. as pigments or as polymer-soluble dyes, for colouring high molecular weight organic material. They are distinguished by unexpectedly high solid-state fluorescence.The substituents A and B are as defined in claim 1.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: June 18, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: John S. Zambounis, Zhimin Hao, Abul Iqbal