Patents Assigned to Ferro Corporation
  • Publication number: 20190249012
    Abstract: The present invention is directed to a method for manufacturing a bismuth based pigment having an improved alkaline resistance, the method comprising: i) obtaining a dried bismuth based pigment; ii) encapsulation of the bismuth based pigment using a chelating agent; iii) final processing of the encapsulated pigment; and v) drying of the pigment. In addition, the present invention is directed to a bismuth based pigment encapsulated by a layer of chelating agent.
    Type: Application
    Filed: September 22, 2017
    Publication date: August 15, 2019
    Applicant: Ferro Corporation
    Inventors: Zeki Acar, Vincent Devreux, Greta Verspaille, Jürgen D'haeveloose, Emmanuelle Clabaux
  • Patent number: 10370290
    Abstract: A passivation glass coating composition is provided for forming a fired passivation glass layer on a semiconductor substrate having p-n junction. The passivation glass coating composition includes a glass component that is lead free, cadmium free, alkali metal oxides free, and colored transition metal oxides (i.e. metal oxides of V, Fe, Co, Ni, Cr, Cu, Mn) free. The glass component includes bismuth based glasses, and provides a firing temperature range of 500° C. to 900° C., and controlled devitrification. Once fired to a semiconductor device, the fired passivation glass layer provides exceptional device performance including no cracking of the fired passivation glass layer, excellent thermal expansion matching to silicon, good chemical resistance to acid and base, and improved device performance.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: August 6, 2019
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, John J. Maloney, George E. Sakoske, Gregory R. Prinzbach, David Widlewski, Jackie Davis, Bradford Smith
  • Patent number: 10287211
    Abstract: LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a barium-tungsten-silicon host.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: May 14, 2019
    Assignee: Ferro Corporation
    Inventor: Walter J. Symes, Jr.
  • Patent number: 10266444
    Abstract: Methods of making multilayer glass structure are described. The method involves providing first and second glass sheets, and a first enamel composition layer and at least one separation layer between the first and second glass sheets, and firing the glass sheets to sinter the first enamel composition to the first glass sheet. The separation layer is a black pigment separation layer, a refractory material separation layer, or an oxidizer separation layer. The separation layer can improve separation of the first and second glass sheets after the firing.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: April 23, 2019
    Assignee: Ferro Corporation
    Inventors: Terry J. Brown, George E. Sakoske, Osamu Ishii
  • Patent number: 10174211
    Abstract: Silver pastes including two powders having different physical properties and silver flakes together with glass frits and pigments impart improved thermal stress characteristics to substrates upon firing.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: January 8, 2019
    Assignee: Ferro Corporation
    Inventors: Terry J. Brown, Jeffrey Grover, David Klimas, George E. Sakoske
  • Patent number: 10065894
    Abstract: Electronic devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a barium-strontium-titanium-tungsten-silicon oxide.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 4, 2018
    Assignee: Ferro Corporation
    Inventor: Walter J. Symes, Jr.
  • Patent number: 10047004
    Abstract: A multi-layer glass enamel is disclosed. The various layers of the enamel are included to provide certain performance characteristics to the enamel. The components of each layer can be individually adjusted to tailor the performance characteristics influenced by that layer without changing the influence of the remaining layers.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: August 14, 2018
    Assignee: Ferro Corporation
    Inventors: George E. Sakoske, Phil Maitland, Dietrich Speer, Walter Frank
  • Publication number: 20180170797
    Abstract: A fired hybrid enamel coating is provided. The hybrid enamel coating is formed by firing an enamel composition on a substrate. The enamel composition includes at least a first glass frit, which is sintered to form the hybrid enamel coating. The hybrid enamel coating can be cleaned using aqualytic or pyrolytic cleaning methods, and does not discolor or lose gloss when subject to typical pyrolytic cleaning methods.
    Type: Application
    Filed: August 26, 2016
    Publication date: June 21, 2018
    Applicant: Ferro Corporation
    Inventors: Andrew Gorecki, Charles A. Baldwin, Brad Devine, Albert L. Benford, Jr., Ralph Villoni, Karine Sarrazy, Alain Aronica, Teddy Colombe, Angélique Leseur
  • Patent number: 9969648
    Abstract: A method of sealing at least two inorganic substrates together using an induction energy source comprising applying to at least one of the substrates a paste composition including a glass frit, and an induction coupling additive, bringing at least a second substrate into contact with the paste composition, and subjecting the substrates and paste to induction heating, thereby forming a hermetic seal between the two inorganic substrates.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 15, 2018
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, George E. Sakoske, Chandrashekhar S. Khadilkar, Gregory R. Prinzbach, John J. Maloney
  • Patent number: 9892853
    Abstract: LTCC devices are produced from dielectric compositions comprising a mixture of precursor materials that, upon firing, forms a dielectric material comprising a matrix of titanates of alkaline earth metals, the matrix doped with at least one selected from rare-earth element, aluminum oxide, silicon oxide and bismuth oxide.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 13, 2018
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Gregory R. Prinzbach, John J. Maloney, James E. Henry, Orville W. Brown, Srinivasan Sridharan, Yie-Shein Her, Stanley Wang, George E. Graddy, Jr., George E. Sakoske
  • Patent number: 9871176
    Abstract: The glass composites include glass frit, that when sintered produce a phosphor-containing layer, suitable for use in optical applications. The glass composites can include a crystallizing glass frit, such that phosphor crystals precipitate from the frit composite during sintering, or can include a non-crystallizing glass composition, such that phosphor is added to the frit composite before sintering. The sintering temperatures of the glass are relatively low so that fluorescence of the phosphors will not substantially degrade during sintering. The resulting phosphor-containing layer can be used in various optical applications including those for converting blue light into various color temperatures of white light.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: January 16, 2018
    Assignee: Ferro Corporation
    Inventors: John J. Maloney, Srinivasan Sridharan, Jackie D. Davis, Gregory R. Prinzbach, George E. Sakoske
  • Publication number: 20180009700
    Abstract: A method of modifying glass frit involves treating the frit with a grain-boundary-healing compound. The method increases transmission and clarity, and reduces haze of a fired enamel coating made from such modified glass frit as compared to a coating not made from such modified glass frit. The grain-boundary-healing compound influences the chemistry at the grain boundaries to prevent haze. The compound burns out to yield a fluxing material that dissolves alkaline carbonates or bicarbonates on the surface of the glass frit. The dissolved species are incorporated into the enamel coating, thereby promoting the fusion of the glass frit and reducing the amount of haze in the enamel coating. The additives also function to prevent the formation of seed crystals on the surface of the glass frit that may inhibit the fusion of the glass frit.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 11, 2018
    Applicant: Ferro Corporation
    Inventors: Enos A. Axtell, III, John J. Maloney, James D. Walker, Srinivasan Sridharan, George E. Sakoske
  • Patent number: 9852848
    Abstract: Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a barium strontium zirconate matrix doped with other metal oxides such as TiO2, CaO, B2O3, and MgO in various combinations.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: December 26, 2017
    Assignee: Ferro Corporation
    Inventor: Walter J. Symes, Jr.
  • Patent number: 9818890
    Abstract: Paste compositions, methods of making a paste composition, and methods of making a solar cell contact are disclosed. The paste composition can contain a nickel intermetallic compound such as nickel silicide, nickely boride or nickel phosphide, a glass frit, a metal additive and an organic vehicle system. The paste can be used for making a solar cell contact.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: November 14, 2017
    Assignee: Ferro Corporation
    Inventors: Himal Khatri, Aziz S. Shaikh, Srinivasan Sridharan, Klaus Kunze
  • Patent number: 9776210
    Abstract: Various laser marking compositions and related methods are described. The laser marking compositions include a molybdenum metal complex, a tungsten metal complex, or combinations thereof. Marks or other indicia formed on a substrate using the compositions and methods exhibit increased contrast and improved substrate bonding.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 3, 2017
    Assignee: Ferro Corporation
    Inventors: Joseph E. Sarver, Stephen Rozwood, George E. Sakoske, Terry J. Detrie
  • Patent number: 9776911
    Abstract: High thermal conductivity dielectric materials systems or pastes are useful on aluminum alloy substrates for LED and high power circuitry applications.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: October 3, 2017
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, Orville W. Brown, George E. Graddy, Jr.
  • Patent number: 9758427
    Abstract: Heavy-metal-free glass enamels are applied to glass and fired. After firing, the coated glass can subsequently be ion exchanged to give a chemically strengthened, decorated glass article.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: September 12, 2017
    Assignee: Ferro Corporation
    Inventors: Enos A. Axtell, III, George E. Sakoske
  • Patent number: 9704650
    Abstract: Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys may be used for internal and external electrodes are disclosed. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, MnO, Nd2O3 and Nb2O5 in various combinations.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: July 11, 2017
    Assignee: Ferro Corporation
    Inventor: Walter J. Symes, Jr.
  • Patent number: 9688566
    Abstract: The invention relates to the field of forehearth frits, pearls, and/or concentrates for use in glass compositions. In particular, the present invention provides a system of forehearth frits, pearls, and/or concentrates that is capable of imparting a brown color to a glass composition for forming colored glass in the forehearth of a glass furnace, and a method of using the colored system of forehearth frits, pearls, and/or concentrates. The invention further provides a glass composition for use in forming the color system or for use directly in a forehearth.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 27, 2017
    Assignee: Ferro Corporation
    Inventors: Benoit Darbouret, Jean-Luc Grapton, George E. Sakoske
  • Patent number: 9683107
    Abstract: Copper oxide particles having particular starting size and surface area characteristics can be processed by heat and milling to achieve sizes and particle size distributions that give the copper oxide properties as an infrared reflective pigment without addition of other metals or oxides.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 20, 2017
    Assignee: Ferro Corporation
    Inventors: Elena D. Milliken, Terry J. Detrie, George E. Sakoske