Patents Assigned to Ferro Corporation
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Patent number: 10427973Abstract: 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. The hybrid enamel coating does not require the application of highly caustic cleaners to remove the baked-on soils.Type: GrantFiled: August 26, 2016Date of Patent: October 1, 2019Assignee: Ferro CorporationInventors: Andrew Gorecki, Charles A. Baldwin, Brad Devine, Albert L. Benford, Jr., Ralph Villoni, Karine Sarrazy, Alain Aronica, Teddy Colombe, Angélique Leseur
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Publication number: 20190249012Abstract: 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: ApplicationFiled: September 22, 2017Publication date: August 15, 2019Applicant: Ferro CorporationInventors: Zeki Acar, Vincent Devreux, Greta Verspaille, Jürgen D'haeveloose, Emmanuelle Clabaux
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Patent number: 10370290Abstract: 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: GrantFiled: May 3, 2017Date of Patent: August 6, 2019Assignee: Ferro CorporationInventors: Srinivasan Sridharan, John J. Maloney, George E. Sakoske, Gregory R. Prinzbach, David Widlewski, Jackie Davis, Bradford Smith
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Patent number: 10287211Abstract: 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: GrantFiled: February 17, 2016Date of Patent: May 14, 2019Assignee: Ferro CorporationInventor: Walter J. Symes, Jr.
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Patent number: 10266444Abstract: 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: GrantFiled: December 12, 2013Date of Patent: April 23, 2019Assignee: Ferro CorporationInventors: Terry J. Brown, George E. Sakoske, Osamu Ishii
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Patent number: 10174211Abstract: 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: GrantFiled: February 6, 2015Date of Patent: January 8, 2019Assignee: Ferro CorporationInventors: Terry J. Brown, Jeffrey Grover, David Klimas, George E. Sakoske
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Patent number: 10065894Abstract: 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: GrantFiled: June 29, 2016Date of Patent: September 4, 2018Assignee: Ferro CorporationInventor: Walter J. Symes, Jr.
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Patent number: 10047004Abstract: 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: GrantFiled: June 17, 2014Date of Patent: August 14, 2018Assignee: Ferro CorporationInventors: George E. Sakoske, Phil Maitland, Dietrich Speer, Walter Frank
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Publication number: 20180170797Abstract: 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: ApplicationFiled: August 26, 2016Publication date: June 21, 2018Applicant: Ferro CorporationInventors: Andrew Gorecki, Charles A. Baldwin, Brad Devine, Albert L. Benford, Jr., Ralph Villoni, Karine Sarrazy, Alain Aronica, Teddy Colombe, Angélique Leseur
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Patent number: 9969648Abstract: 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: GrantFiled: September 12, 2012Date of Patent: May 15, 2018Assignee: Ferro CorporationInventors: Srinivasan Sridharan, George E. Sakoske, Chandrashekhar S. Khadilkar, Gregory R. Prinzbach, John J. Maloney
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Patent number: 9892853Abstract: 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: GrantFiled: June 12, 2015Date of Patent: February 13, 2018Assignee: Ferro CorporationInventors: 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
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Patent number: 9871176Abstract: 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: GrantFiled: January 27, 2016Date of Patent: January 16, 2018Assignee: Ferro CorporationInventors: John J. Maloney, Srinivasan Sridharan, Jackie D. Davis, Gregory R. Prinzbach, George E. Sakoske
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Publication number: 20180009700Abstract: 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: ApplicationFiled: January 4, 2016Publication date: January 11, 2018Applicant: Ferro CorporationInventors: Enos A. Axtell, III, John J. Maloney, James D. Walker, Srinivasan Sridharan, George E. Sakoske
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Patent number: 9852848Abstract: 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: GrantFiled: June 27, 2016Date of Patent: December 26, 2017Assignee: Ferro CorporationInventor: Walter J. Symes, Jr.
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Patent number: 9818890Abstract: 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: GrantFiled: April 18, 2013Date of Patent: November 14, 2017Assignee: Ferro CorporationInventors: Himal Khatri, Aziz S. Shaikh, Srinivasan Sridharan, Klaus Kunze
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Patent number: 9776911Abstract: High thermal conductivity dielectric materials systems or pastes are useful on aluminum alloy substrates for LED and high power circuitry applications.Type: GrantFiled: October 6, 2014Date of Patent: October 3, 2017Assignee: Ferro CorporationInventors: Srinivasan Sridharan, Orville W. Brown, George E. Graddy, Jr.
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Patent number: 9776210Abstract: 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: GrantFiled: March 21, 2016Date of Patent: October 3, 2017Assignee: Ferro CorporationInventors: Joseph E. Sarver, Stephen Rozwood, George E. Sakoske, Terry J. Detrie
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Patent number: 9758427Abstract: 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: GrantFiled: October 6, 2016Date of Patent: September 12, 2017Assignee: Ferro CorporationInventors: Enos A. Axtell, III, George E. Sakoske
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Patent number: 9704650Abstract: 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: GrantFiled: September 8, 2014Date of Patent: July 11, 2017Assignee: Ferro CorporationInventor: Walter J. Symes, Jr.
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Patent number: 9688566Abstract: 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: GrantFiled: August 3, 2016Date of Patent: June 27, 2017Assignee: Ferro CorporationInventors: Benoit Darbouret, Jean-Luc Grapton, George E. Sakoske