Patents by Inventor Helge Kniess
Helge Kniess 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: 7611574Abstract: The invention relates to an interference pigment with a high covering power, comprising at least one FeTiO3-containing layer, which is applied to a lamellar inorganic substrate and whose thickness and absorbing power can be precisely set. The invention also relates to a method for producing this interference pigment and to the use thereof.Type: GrantFiled: May 5, 2004Date of Patent: November 3, 2009Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Helge Kniess, Gerhard Pfaff, Klaus Bernhardt
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Publication number: 20080210123Abstract: The present invention relates to semitransparent interference pigments having a neutral mass tone comprising a substrate and a coating comprising metallic tin and additionally at least one metal oxide, to a process for the preparation of these pigments, and to the use thereof.Type: ApplicationFiled: June 9, 2006Publication date: September 4, 2008Inventors: Helge Kniess, Klaus Bernhardt, Wolf-Dietrich Weber, Gerhard Pfaff
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Publication number: 20070028799Abstract: The invention relates to an interference pigment with a high covering power, comprising at least one FeTiO3-containing layer, which is applied to a lamellar inorganic substrate and whose thickness and absorbing power can be precisely set. The invention also relates to a method for producing this interference pigment and to the use thereof.Type: ApplicationFiled: May 5, 2004Publication date: February 8, 2007Inventors: Helge Kniess, Gerhard Pfaff, Klaus Bernhardt
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Publication number: 20060225609Abstract: The present invention relates to interference pigments based on coated flake-form substrates which are distinguished by the fact in that they comprise (A) a layer of SiO2 having a layer thickness of 5-350 nm, (B) a high-refractive-index coating having a refractive index n of >1.8 and/or (C) an interference system consisting of alternating high- and low-refractive-index layers and optionally (D) an outer protective layer, and to the use thereof in paints, coatings, automotive paints, powder coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, paper, in toners for electrophotographic printing processes, in seed, in greenhouse sheeting and tent awnings, as absorbers in the laser marking of paper and plastics, in cosmetic formulations, for the preparation of pigment pastes with water, organic and/or aqueous solvents, and for the preparation of pigment preparations and dry preparations.Type: ApplicationFiled: December 9, 2003Publication date: October 12, 2006Inventors: Reinhold Rueger, Klaus Ambrosius, Marcus Mathias, Helge Kniess
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Publication number: 20060032404Abstract: The present invention relates to a silver and color-neutral pigment mixture comprising weakly colored silver interference pigments A and weakly colored interference pigments B of a complementary color, to the use thereof in cosmetics, paints, coatings, plastics, films, in security printing, in security features in documents and identity cards, for coloring seed, for coloring foods or in medicament coatings and for the preparation of pigment compositions and dry preparations, and to cosmetics, paints, coatings, plastics, films, security features in documents and identity cards, seed, food or medicament coatings and pigment compositions and dry preparations comprising the pigment mixture according to the invention.Type: ApplicationFiled: July 26, 2005Publication date: February 16, 2006Inventor: Helge Kniess
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Publication number: 20060027140Abstract: The present invention relates to multilayered interference pigments comprising a platelet-shaped substrate which is coated with alternating layers of materials of high and low refractive index, where the total thickness of the interference pigments is not greater than 1 ?m. The present invention likewise relates to processes for the preparation of these pigments, in which a substrate is coated alternately with layers of materials of high and low refractive index, where the thicknesses of the layers of materials of high and low refractive index are selected in such a way that the total thickness of the interference pigments does not become greater than 1 ?m, and to the use of these pigments in cosmetics, paints, coatings, plastics, films, in security printing, in security features in documents and identity cards, for coloring seed, for coloring foods or in medicament coatings, and for the preparation of pigment compositions and dry preparations.Type: ApplicationFiled: July 27, 2005Publication date: February 9, 2006Inventors: Helge Kniess, Peter Reynders, Gerhard Pfaff
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Publication number: 20040180010Abstract: The present invention relates to multilayer pigments based on platelet-shaped metal substrates coated with two or more metal oxide layers by a one-pot process in an exclusively aqueous medium. The invention further relates to the use of the multilayer pigments in paints, varnishes, printing inks, including security printing inks, plastics, ceramic materials and cosmetic and for the laser formulations marking of plastics.Type: ApplicationFiled: March 30, 2004Publication date: September 16, 2004Inventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
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Patent number: 6776835Abstract: The present invention relates to multilayer pigments based on platelet-shaped metal substrates coated with two or more metal oxide layers by a one-pot process in an exclusively aqueous medium. The invention further relates to the use of the multilayer pigments in paints, varnishes, printing inks, including security printing inks, plastics, ceramic materials and cosmetic and for the laser formulations marking of plastics.Type: GrantFiled: June 4, 2003Date of Patent: August 17, 2004Assignee: Merck Patent Gesellschaft MIT Beschrankter HaftungInventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
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Patent number: 6727308Abstract: The present invention relates to laser-markable plastics of which a feature is that they comprise as dopant at least one metal powder and/or semimetal powder selected from the group consisting of aluminum, boron, titanium, magnesium, copper, tin, silicon and zinc and one or more effect pigments based on phyllosilicates.Type: GrantFiled: April 13, 2001Date of Patent: April 27, 2004Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
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Patent number: 6719838Abstract: The present invention relates to colored interference pigments based on multicoated, platelet-shaped substrates, which are distinguished in that they comprise (A) a colored coating having a refractive index of n>1.8, (B) a colorless coating having a refractive index of n>1.8, (C) a colorless coating having a refractive index of n≦1.8, (D) a colorless coating having a refractive index of n>1.8, and optionally (E) an outer protective layer, and to their use in paints, surface coatings, printing inks, plastics, ceramic materials, glasses, for laser marking, in cosmetic formulations and for the production of pigment preparations and dry preparations.Type: GrantFiled: October 24, 2002Date of Patent: April 13, 2004Assignee: Merck Patent GmbHInventors: Lilia Heider, Manuela Loch, Nicole Schupp, Helge Kniess
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Patent number: 6656259Abstract: The invention relates to multilayered interference pigments which comprise a platelet-shaped substrate of silicon dioxide which is coated alternately with layers of light-transparent materials having refractive indices of n>1.8 and layers of light-transparent materials having refractive indices of n≦1.8, where the optical thickness of the platelet-shaped substrate and the optical thickness of the individual layers of light-transparent materials having refractive indices of n≦1.8 are the same.Type: GrantFiled: August 2, 2002Date of Patent: December 2, 2003Assignee: Merck Patent Gesellschaft mit beschraenkter HaftungInventors: Gerhard Pfaff, Helge Kniess, Peter Reynders
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Publication number: 20030209169Abstract: The present invention relates to multilayer pigments based on platelet-shaped metal substrates coated with two or more metal oxide layers by a one-pot process in an exclusively aqueous medium. The invention further relates to the use of the multilayer pigments in paints, varnishes, printing inks, including security printing inks, plastics, ceramic materials and cosmetic and for the laser formulations marking of plastics.Type: ApplicationFiled: June 4, 2003Publication date: November 13, 2003Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
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Publication number: 20030097965Abstract: The present invention relates to coloured interference pigments based on multicoated, platelet-shaped substrates, which are distinguished in that they compriseType: ApplicationFiled: October 24, 2002Publication date: May 29, 2003Applicant: Merck Patent GmbHInventors: Lilia Heider, Manuela Loch, Nicole Schupp, Helge Kniess
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Publication number: 20030039836Abstract: The invention relates to multilayered interference pigments which comprise a platelet-shaped substrate of silicon dioxide which is coated alternately with layers of light-transparent materials having refractive indices of n>1.8 and layers of light-transparent materials having refractive indices of n≦1.8, where the optical thickness of the platelet-shaped substrate and the optical thickness of the individual layers of light-transparent materials having refractive indices of n≦1.8 are the same.Type: ApplicationFiled: August 2, 2002Publication date: February 27, 2003Applicant: Merck Patent GmbHInventors: Gerhard Pfaff, Helge Kniess, Peter Reynders
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Patent number: 6376577Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.Type: GrantFiled: December 18, 2000Date of Patent: April 23, 2002Assignee: Merck PatentgesellschaftInventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
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Patent number: 6291551Abstract: The present invention relates to laser-markable plastics of which a feature is that they comprise as dopant anthracene- or pentaerythritol-coated effect pigments or a mixture comprising one or more effect pigments and anthracene and/or pentaerythritol.Type: GrantFiled: September 13, 2000Date of Patent: September 18, 2001Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
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Publication number: 20010021731Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.Type: ApplicationFiled: December 18, 2000Publication date: September 13, 2001Inventors: Helge Kniess, Dieter Heniz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz