Patents by Inventor Hans-Dieter Bruckner
Hans-Dieter Bruckner 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).
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Patent number: 7169222Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.Type: GrantFiled: July 11, 2005Date of Patent: January 30, 2007Assignee: Merck Patent GmbHInventors: Hans-Dieter Brückner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
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Publication number: 20050241530Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.Type: ApplicationFiled: July 11, 2005Publication date: November 3, 2005Inventors: Hans-Dieter Bruckner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
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Patent number: 6840993Abstract: The present invention relates to silver-colored luster pigments based on multiply coated platelet-shaped substrates, which has at least one layer sequence of TiO2, a colorless coating and another TiO2 layer. The pigment can optionally have an outer protective layer. These luster pigments are useful and to the use thereof in paints, coatings, printing inks, including security printing inks, plastics, ceramic materials, glasses, cosmetic formulations and for producing pigment preparations and dry product forms such as granules, chips, pellets and briquettes.Type: GrantFiled: April 21, 2003Date of Patent: January 11, 2005Assignee: Merck Patent GmbHInventors: Christoph Schmidt, Andrea Heyland, Claudia Fornoff, Hans-Dieter Brückner
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Publication number: 20040144023Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.Type: ApplicationFiled: January 15, 2004Publication date: July 29, 2004Inventors: Hans-Dieter Bruckner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
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Patent number: 6767633Abstract: The invention relates to a transparent medium comprising multilayer pigments having angle-selective reflection or transmission properties and/or absorption properties, and to their use, in particular in transparent thermal insulation systems (TTIs).Type: GrantFiled: October 10, 2002Date of Patent: July 27, 2004Assignee: Merck Patent GmbHInventors: Elke Steudel, Hans-Dieter Brückner, Gerhard Pfaff, Peter Reynders, Christoph Schmidt, Carsten Brabänder, Wolfgang Hechler
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Patent number: 6689205Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.Type: GrantFiled: October 24, 2000Date of Patent: February 10, 2004Assignee: Merck Patent GesellschaftInventors: Hans-Dieter Brückner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
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Publication number: 20040003758Abstract: The invention relates to a multilayered interference pigment consisting of a transparent carrier material which is coated with alternating layers of colourless, non-absorbent metal oxides having a high and a low refractive index, the difference between the refractive indices being at least 0.1. The inventive pigment can be obtained by alternately coating the transparent carrier material with a metal oxide having a high refractive index and a metal oxide having a low refractive index according to the wet method, by hydrolysing the corresponding water-soluble, inorganic metal compounds, and separating, drying and optionally calcinating the obtained pigment.Type: ApplicationFiled: April 9, 2003Publication date: January 8, 2004Inventors: Hans-Dieter Bruckner, Matthias Kuntz
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Publication number: 20030205170Abstract: The present invention relates to silver-colored luster pigments based on multiply coated platelet-shaped substrates, which has at least one layer sequence of TiO2, a colorless coating and another TiO2 layer. The pigment can optionally have an outer protective layer. These luster pigments are useful and to the use thereof in paints, coatings, printing inks, including security printing inks, plastics, ceramic materials, glasses, cosmetic formulations and for producing pigment preparations and dry product forms such as granules, chips, pellets and briquettes.Type: ApplicationFiled: April 21, 2003Publication date: November 6, 2003Applicant: Merck Patent GmbHInventors: Christoph Schmidt, Andrea Heyland, Claudia Fornoff, Hans-Dieter Bruckner
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Patent number: 6508876Abstract: A colored interference pigment having a platelet-shaped layer as substrate, a coating of at least one metal oxide layer and, optionally, a further layer, at least two layers comprising or consisting of colorants.Type: GrantFiled: February 9, 2000Date of Patent: January 21, 2003Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Klaus Bernhardt, Hans-Dieter Brückner, Karl Osterried, Reiner Vogt
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Publication number: 20020192585Abstract: The invention relates to a dry toner for laser printing which comprises at least one viewing angle-dependent (“angle-dependent”), platelet-shaped luster pigment. The luster pigment consists of a multicoated, platelet-shaped, opaque or semi-transparent substrate. The toner is particularly suitable for security printing. The invention furthermore relates to a process for the production of images by electrophotographic methods using the dry toner.Type: ApplicationFiled: May 20, 2002Publication date: December 19, 2002Applicant: Merck Patent GmbHInventors: Gunter Brenner, Hans-Dieter Bruckner, Wolfgang Hechler, Burkhard Krietsch, Matthias Kuntz, Michael Schmelz
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Publication number: 20020104461Abstract: The present invention relates to silver-colored luster pigments based on multiply coated platelet-shaped substrates, which has at least one layer sequence of TiO2, a colorless coating and another TiO2 layer. The pigment can optionally have an outer protective layer. These luster pigments are useful and to the use thereof in paints, coatings, printing inks, including security printing inks, plastics, ceramic materials, glasses, cosmetic formulations and for producing pigment preparations and dry product forms such as granules, chips, pellets and briquettes.Type: ApplicationFiled: December 6, 2001Publication date: August 8, 2002Applicant: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Christoph Schmidt, Andrea Heyland, Claudia Fornoff, Hans-Dieter Bruckner
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Patent number: 6238471Abstract: Multilayer interference pigment having a blue mass tone, comprised of a platelet-shaped carrier material and a coating which is formed from (i) a first layer of a colorless, transparent metal oxide of high refractive index, (ii) a second layer of colorless, transparent metal oxide of low refractive index and (iii) a third, outer layer of cobalt aluminate, cobalt-containing glass, tungsten bronzes or cobalt oxide, it also being possible for the first and third layer to be swapped around.Type: GrantFiled: February 1, 1999Date of Patent: May 29, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Reiner Vogt, Hans-Dieter Brückner
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Patent number: 5698205Abstract: The present invention relates to neutral titanium dioxide sols which have been stabilized with hydroxycarboxylic acids or derivatives thereof and are treated with metal ions, inorganic anions, complexing agents and/or oxidizing agents to improve the photostability.Type: GrantFiled: August 29, 1994Date of Patent: December 16, 1997Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Hans-Dieter Bruckner, Ulrike Hamann, Andrea Heyland
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Patent number: 5611852Abstract: A stabilized conductive pigment based on aluminum-doped zinc oxide which, for stabilizing the electric conductivity, contains an alkaline earth metal titanate or an oxide of an element from group III or IV.Type: GrantFiled: August 16, 1994Date of Patent: March 18, 1997Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Gerhard Pfaff, Hans-Dieter Bruckner
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Patent number: 5562763Abstract: The invention relates to a process for the preparation of composite pigments containing a substrate having an average diameter of 3-200 .mu.m as support for small organic or inorganic pigment particles having an average diameter of less than 1 .mu.m, characterized in that the pigment particles are applied by spray-drying an aqueous suspension containing the substrates and the pigment particles without addition of additives.Type: GrantFiled: April 7, 1993Date of Patent: October 8, 1996Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Hans-Dieter Bruckner, Ines Subrod
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Patent number: 5389361Abstract: The invention relates to a preparation which is suitable for preparing a neutral metal oxide sol and contains 35-75% by weight of one or more metal oxide sols or metal oxide hydrates and 15-45% by weight of one or more hydroxycarboxylic acids and/or hydroxycarboxylic acid derivatives as stabilizers.Type: GrantFiled: June 15, 1992Date of Patent: February 14, 1995Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Karl Osterried, Wolfgang Hechler, Hans-Dieter Bruckner, Roland Martin
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Patent number: 5271771Abstract: The invention relates to carbon-containing plate-like pigments, obtainable by pyrolysis of carbon-containing compounds in the presence of either plate-like metal oxides or metal oxide mixtures or plate-like substrates coated with titanium dioxide and at least one further metal oxide under conditions in which the metal of the metal oxide is reduced.Type: GrantFiled: July 30, 1992Date of Patent: December 21, 1993Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Klaus-Dieter Franz, Klausg Ambrosius, Hans-Dieter Bruckner