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).

  • Patent number: 7611574
    Abstract: 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: Grant
    Filed: May 5, 2004
    Date of Patent: November 3, 2009
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Helge Kniess, Gerhard Pfaff, Klaus Bernhardt
  • Publication number: 20080210123
    Abstract: 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: Application
    Filed: June 9, 2006
    Publication date: September 4, 2008
    Inventors: Helge Kniess, Klaus Bernhardt, Wolf-Dietrich Weber, Gerhard Pfaff
  • Publication number: 20070028799
    Abstract: 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: Application
    Filed: May 5, 2004
    Publication date: February 8, 2007
    Inventors: Helge Kniess, Gerhard Pfaff, Klaus Bernhardt
  • Publication number: 20060225609
    Abstract: 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: Application
    Filed: December 9, 2003
    Publication date: October 12, 2006
    Inventors: Reinhold Rueger, Klaus Ambrosius, Marcus Mathias, Helge Kniess
  • Publication number: 20060032404
    Abstract: 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: Application
    Filed: July 26, 2005
    Publication date: February 16, 2006
    Inventor: Helge Kniess
  • Publication number: 20060027140
    Abstract: 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: Application
    Filed: July 27, 2005
    Publication date: February 9, 2006
    Inventors: Helge Kniess, Peter Reynders, Gerhard Pfaff
  • Publication number: 20040180010
    Abstract: 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: Application
    Filed: March 30, 2004
    Publication date: September 16, 2004
    Inventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
  • Patent number: 6776835
    Abstract: 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: Grant
    Filed: June 4, 2003
    Date of Patent: August 17, 2004
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
  • Patent number: 6727308
    Abstract: 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: Grant
    Filed: April 13, 2001
    Date of Patent: April 27, 2004
    Assignee: Merck Patent Gesellschaft mit beschränkter Haftung
    Inventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
  • Patent number: 6719838
    Abstract: 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: Grant
    Filed: October 24, 2002
    Date of Patent: April 13, 2004
    Assignee: Merck Patent GmbH
    Inventors: Lilia Heider, Manuela Loch, Nicole Schupp, Helge Kniess
  • Patent number: 6656259
    Abstract: 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: Grant
    Filed: August 2, 2002
    Date of Patent: December 2, 2003
    Assignee: Merck Patent Gesellschaft mit beschraenkter Haftung
    Inventors: Gerhard Pfaff, Helge Kniess, Peter Reynders
  • Publication number: 20030209169
    Abstract: 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: Application
    Filed: June 4, 2003
    Publication date: November 13, 2003
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
  • Publication number: 20030097965
    Abstract: The present invention relates to coloured interference pigments based on multicoated, platelet-shaped substrates, which are distinguished in that they comprise
    Type: Application
    Filed: October 24, 2002
    Publication date: May 29, 2003
    Applicant: Merck Patent GmbH
    Inventors: Lilia Heider, Manuela Loch, Nicole Schupp, Helge Kniess
  • Publication number: 20030039836
    Abstract: 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: Application
    Filed: August 2, 2002
    Publication date: February 27, 2003
    Applicant: Merck Patent GmbH
    Inventors: Gerhard Pfaff, Helge Kniess, Peter Reynders
  • Patent number: 6376577
    Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: April 23, 2002
    Assignee: Merck Patentgesellschaft
    Inventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
  • Patent number: 6291551
    Abstract: 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: Grant
    Filed: September 13, 2000
    Date of Patent: September 18, 2001
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
  • Publication number: 20010021731
    Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.
    Type: Application
    Filed: December 18, 2000
    Publication date: September 13, 2001
    Inventors: Helge Kniess, Dieter Heniz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz