Patents Examined by Scott L. Hertzog
  • Patent number: 6022405
    Abstract: Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colors cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colors. The powders of this system are obtained by mechanical, chemical, thermal and/or physical processes and are used alone or in combination. They are particularly useful to color materials and, more especially those used in the construction and architectural fields.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: February 8, 2000
    Inventor: Paulette Tourangeau
  • Patent number: 6010567
    Abstract: This invention relates to a black-pigmented high molecular weight organic material which is structured from a radiation-sensitive precursor by irradiation, the pigmentation of which material consists of coloured organic pigments, at least one of which is in latent form before irradiation. This material is preferably used as a thin layer which is built up in the form of patterns on a transparent substrate and which can be used, for example, as black matrix for optical colour filters. This invention also relates to a process for the preparation of this material as well as to novel soluble derivatives of yellow disazo condensation pigments which can be used in this process.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: January 4, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Ulrich Schadeli, Eric Tinguely, Veronique Hall-Goulle, Gerardus de Keyzer
  • Patent number: 6007616
    Abstract: Disclosed is a system of natural colours consisting of thousands of coloured powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colours cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colours. The powders of this system are obtained by mechanical, chemical, thermal and/or physical processes and are used alone or in combination. They are particularly useful to colour materials and, more especially those used in the construction and architectural fields.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: December 28, 1999
    Inventor: Paulette Tourangeau
  • Patent number: 6007617
    Abstract: Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colors cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colors. The powders of this system are obtained by a combination of three mechanical, chemical, thermal and/or irradiation processes. They are particularly useful to color materials and, more especially those used in the construction and architectural fields.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: December 28, 1999
    Inventor: Paulette Tourangeau
  • Patent number: 6001167
    Abstract: Disclosed are compositions comprising one or more compounds characterized by the formula: ##STR1## wherein each R is independently a hydrocarbyl, hydroxy, hydrocarbyloxy, carboxylic acid, carboxylic acid ester, carboxylic acid amide, sulfonic acid, sulfonic acid amide, imidazolone or nitro group; n is 0, 1 or 2; and M is at least one divalent metal. A process for preparing azo pigment compositions is also disclosed. Paint, ink and plastic compositions containing the foregoing pigments compositions are disclosed.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: December 14, 1999
    Assignee: Engelhard Corporation
    Inventor: Amrit Bindra
  • Patent number: 5997627
    Abstract: The disclosure describes pigment compositions containing a small particle size porous filler and a pigment, and their use for preparing effect coating compositions which produce thin film finishes exhibiting strong lightness and color flop with a pronounced three dimensional effect. The thin film finishes are particularly interesting as automotive finishes.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: December 7, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Fridolin Babler
  • Patent number: 5989516
    Abstract: The present invention relates to a spindle-shaped goethite particles containing cobalt of 8.0 to 50.0 atm %, calculated as Co, based on the total Fe in the spindle-shaped goethite particles and a compound of at least one element selected from the group consisting of Al, Si, Nd, Y, La, Ce, Pr, Tb, Ca, Mg, Ba and Sr of not more than 25.0 atm %, calculated as the element, based on the total Fe in the spindle-shaped goethite particles, and having an average major axis diameter of 0.05 to 0.15 .mu.m, a size distribution (standard deviation/major axis diameter) of not more than 0.30, an average minor axis diameter of 0.010 to 0.025 .mu.m, an aspect ratio of 4 to 8 and an X-ray crystallite size ratio (D.sub.020 /D.sub.110) of 2.0 to 3.5.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: November 23, 1999
    Assignee: Toda Kogyo Corporation
    Inventors: Kenji Okinaka, Yasutaka Ota
  • Patent number: 5985020
    Abstract: Plateletlike titanium dioxide reduction pigment consisting of titanium dioxide, titanium suboxides and, if desired, a further metal oxide or titanium oxynitride, obtainable by solidifying an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detaching the resulting coat, coating the resulting titanium dioxide platelets, with or without drying in between, with further titanium dioxide by a wet method, drying and, if desired, calcining the material, and treating the material obtained with a reducing agent in a nonoxidizing gas atmosphere.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: November 16, 1999
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Stefanie Andes, Sabine Hock, Gunter Brenner, Dieter Bruckner, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff, Michael Schmelz
  • Patent number: 5985019
    Abstract: A process for the manufacture of a pigment concentrate which comprises dispersing dry organic pigment granules in an organic vehicle.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: November 16, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James McGeachie McCrae, Eric William Gilmour, Jean-Luc Schwitzguebel
  • Patent number: 5976237
    Abstract: Improved coated inorganic pigments having a first coating of Al.sub.2 O.sub.3, SiO.sub.2, or optionally other oxide such as a source of P.sub.2 O.sub.5, or mixtures thereof, an optional coating of ZrO.sub.2, SnO.sub.2, TiO.sub.2, SiO.sub.2, CeO.sub.2 or mixtures thereof, and a final coating of Al.sub.2 O.sub.3 which exhibit good durability, dispersibility, and optical properties in plastic or paint compositions are disclosed. Also disclosed is a process whereby an aqueous slurry of an inorganic pigment is milled to achieve a particular particle size distribution, a first coating of Al.sub.2 O.sub.3, SiO.sub.2, or optionally other oxide such as a source of P.sub.2 O.sub.5, or mixtures thereof is precipitated onto the pigment material within a first pH range, an optional amount of ZrO.sub.2, SnO.sub.2, SiO.sub.2, TiO.sub.2, CeO.sub.2 or mixtures thereof is added to the aqueous slurry within a second pH range to obtain an optional coating over the first coating, and a final coating of Al.sub.2 O.sub.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: November 2, 1999
    Assignee: Kerr-McGee Chemical Corporation
    Inventors: John E. Halko, Fran Tyler
  • Patent number: 5972098
    Abstract: Single-layer or multilayer titanate-containing pearlescent pigments comprising iron titanate and, if appropriate, titanium oxide and/or iron oxide, which is obtainable by solidification of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the layer formed, coating of the resulting titanium dioxide platelets, after or without intermediate drying, with iron oxide in a wet process, and drying and calcining of the resulting material in an oxidizing or reducing gas atmosphere at not less than 500.degree. C., the layer thicknesses of the titanium dioxide layer and iron dioxide layer being adjusted such that either the stoichiometric ratio between iron oxide and titanium dioxide necessary for the formation of pseudo-brookite or ilmenite is obtained or an excess of iron oxide or titanium dioxide is present.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: October 26, 1999
    Assignee: Merck Patent GmbH
    Inventors: Stefanie Andes, Sabine Hock, Gunter Brenner, Dieter Bruckner, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff, Michael Schmelz
  • Patent number: 5972100
    Abstract: A filler of inorganic particles, cellulose reactive size and cationic dispersing agent is provided, the use of which results in the capability to obtain the desired sizing level practically unaffected by the level of filler addition.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: October 26, 1999
    Assignee: Hercules Incorporated
    Inventor: David Howard Dumas
  • Patent number: 5972097
    Abstract: The invention provides a method for producing colorful inorganic pigments, which comprise complex oxides of various elements, which have good weather resistance and good heat resistance, and which are widely used in colorants for ceramics and in colorants for coatings and plastics. In the method, the composite oxides are sintered at a low temperature for a short period of time to give homogeneous and well colored pigments. Under the sintering conditions, the composite oxides are not sintered excessively. The grinding step in the method is simplified.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 26, 1999
    Assignee: Ferro Enamels (Japan) Limited
    Inventors: Toyotaro Maki, Shuzo Mihara, Shigeru Suzuki
  • Patent number: 5968242
    Abstract: A molecular sieve, which contains in all, or only in some, of its cavities colorant molecules as well as a modifier which is covalently bound to said molecular sieve and which reduces its pore diameter, a process for its preparation as well as its use as pigment for coloring high molecular weight organic materials, preferably biopolymers and plastic materials, glasses, ceramic products, for formulations of decorative cosmetics, for the preparation of paint systems, preferably automotive lacquers, printing inks, dispersion paints and color filters as well as materials comprising the novel molecular sieves.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: October 19, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Wolfgang Holderich, Nadja Rohrlich, Laurent Chassot
  • Patent number: 5968243
    Abstract: A modified carbon product is described which comprises carbon having attached at least one organic group wherein the organic group comprises a) at least one aromatic group or a C.sub.1 -C.sub.12 alkyl group, and b) a group having the formula -AG-Sp-LG-Z, wherein AG is an activating group, Sp is a spacer group, LG is a leaving group, and Z is a counterion, and wherein the aromatic or the C.sub.1 -C.sub.12 alkyl group is directly attached to the carbon, and wherein the organic group is present in any amount. The present invention also relates to ink and coating compositions comprising these modified carbon products.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: October 19, 1999
    Inventors: James A. Belmont, Curtis E. Adams
  • Patent number: 5968251
    Abstract: Carotenoid preparations in the form of coldwater-dispersible powders are produced bya) preparing a molecular-disperse solution of a carotenoid, with or without an emulsifier and/or an edible oil, in a volatile, water-miscible, organic solvent at elevated temperature and adding therein an aqueous solution of a protective colloid, whereupon the hydrophilic solvent component is transferred into the aqueous phase, and the hydrophobic phase of the carotenoid results as nanodisperse phase,b) heating the resulting hydrosol at from 40.degree. C. to 90.degree. C., with or without cooling of the hydrosol to from 0.degree. C. to 30.degree. C. beforehand, andc) removing the solvent and the water from the heated hydrosol, and converting it into a water-dispersible dry powder.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: October 19, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Auweter, Heribert Bohn, Herbert Haberkorn, Dieter Horn, Erik Luddecke, Volker Rauschenberger
  • Patent number: 5968252
    Abstract: Compounds of formula ##STR1## wherein R and R' are each independently of the other hydrogen, C.sub.1 -C.sub.18 alkyl, COR.sub.1, COR.sub.2 or COOR.sub.1,X and X' are each independently of the other hydrogen, halogen, OH, NH.sub.2, COOH, C.sub.1 -C.sub.18 -alkyl, isocyclic or heterocyclic aromatic radicals, OR.sub.3, OCOR.sub.3, OCOR.sub.4, OCOR.sub.3, NHR.sub.3, N(R.sub.3).sub.2, NHCOR.sub.3, NHCOR.sub.4 or NHCOOR.sub.3,Y and Y' are each independently of the other hydrogen, halogen, OH, NH.sub.2, nitro, cyano, C.sub.1 -C.sub.18 alkyl, isocyclic or heterocyclic aromatic radicals, COR.sub.5, COR.sub.6, COOR.sub.5, COOR.sub.6, CONH.sub.2, SO.sub.2 R.sub.5, SO.sub.2 R.sub.6, SO.sub.2 NH.sub.2, SO.sub.3 H, PO(OR.sub.5).sub.2 or PO(OH).sub.2, andZ and Z' are each independently of the other hydrogen, halogen, OH, NH.sub.2, COOH, cyano, C.sub.1 -C.sub.18 alkyl, isocyclic or heterocyclic aromatic radicals, OR.sub.7, OR.sub.8, OCOR.sub.7, OCOR.sub.8, OCOOR.sub.7, NHR.sub.7, N(R.sub.7).sub.2, NHR.sub.8, CONH.sub.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: October 19, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Robert Moretti, Gary Wooden
  • Patent number: 5964929
    Abstract: A process for the preparation of an ink concentrate which comprises(a) milling a crude metal phthalocyanine to reduce the particle size thereof, thereby forming a modified crude metal phthalocyanine and(b) kneading a mixture of the modified crude metal phthalocyanine together with an ink vehicle comprising one or more ink solvents, the metal phthalocyanine being present in an amount of 20 to 80% by weight of the kneaded mixture, to give an ink concentrate containing the metal phthalocyanine in pigmentary form dispersed in the ink vehicle.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: October 12, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Robert Langley, Paul Kerwin, Arthur Stark Walls, Kenneth Grant Dykes
  • Patent number: 5964935
    Abstract: Initiator-treated pigment particles for use in making polymer coated pigment particles, are made up of a plurality of pigment particles. Each of the pigment particles has an outer surface that is covered with a coating of initiator material. The initiator material operates as a nucleus for initiating polymerization on the surface of the particle. The initiator-treated pigment particles are made by providing a plurality of pigment particles and applying a coating of initiator material to the outer surface of each pigment particle.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: October 12, 1999
    Assignee: Copytele, Inc.
    Inventors: Jing Hong Chen, Frederic E. Schubert
  • Patent number: 5961710
    Abstract: The invention relates to granules of inorganic pigments, a process for their production using several auxiliary substances by compacting and their use in many technical fields.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: October 5, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Linde, Manfred Eitel, Olaf Schmidt-Park, Kai Butje