Patents by Inventor George E. Sakoske

George E. Sakoske 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: 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
  • Publication number: 20190229067
    Abstract: A compounded polymer material that can be laser marked is provided. The compounded polymer material includes an enhancer of nitrides, carbides, silicides, or combinations thereof. Upon forming the compounded polymer material into an article and exposing it to laser radiation, the irradiated portion of the compounded polymer material absorbs the laser radiation, increases in temperature, and forms a mark in the article. A lightness value difference (?L) between the mark and the non-irradiated portion of the article has an absolute value of at least 5, and the lightness value difference between the mark and the non-irradiated portion is greater than if the polymer material did not include the enhancer.
    Type: Application
    Filed: October 18, 2018
    Publication date: July 25, 2019
    Inventors: Joseph E. Sarver, Nicholas M. Karpa, Dennis R. Gilmore, George E. Sakoske
  • Publication number: 20190225000
    Abstract: A universal or all-purpose laser marking composition for forming satisfactorily dark laser marks on a wide variety of substrates is provided. The marking composition comprises an enhancer of nitrides, carbides, silicides, and combinations thereof. The enhancer may be selected one or more of ferromanganese, ferrosilicon, FexSi(1-x) where X can range from about 0.005 to 0.995, Fe5Si2, MgFeSi, SiC, CaSi, (Co)Mo, MoSi2, TiSi2, ZrSi2, WSi2, MnSi2, YSi, Cu5Si, Ni2Si, Fe3C, Fe7C3 and Fe2C, MoC, Mo2C, Mo3C2, YC2, WC, Al4C3, Mg2C, Mg2C3, CaC2, LaC2, Ta4C3, Fe2N, Fe3N, Fe4N, Fe7N3, Fe16N2, MoN, Mo2N, W2N, WN, WN2, and combinations thereof and combinations thereof.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 25, 2019
    Inventors: Joseph E. Sarver, Nicholas M. Karpa, Dennis R. Gilmore, George E. Sakoske
  • Publication number: 20190202733
    Abstract: A curable glass coating composition including 5-70 wt % aliphatic polycarbonate diol, 5-60 wt % crosslinker, 1-20 wt % extender, 4-20 wt % fatty alcohol, and 2-30 wt % crystalline or amorphous powder filler material, and optionally 2-20 wt % aliphatic polyester polyol and 2-20 wt % cycloaliphatic epoxy. The coating composition can be applied to a glass substrate and cured to form a decorative cured polyurethane coating layer on the substrate that has improved caustic and UV resistance.
    Type: Application
    Filed: January 3, 2018
    Publication date: July 4, 2019
    Inventors: Thirumalai Duraisamy, Kameron Gale, Cindy Pankiewicz, George E. Sakoske
  • Publication number: 20190135683
    Abstract: A low K value, high Q value, low firing dielectric material and method of forming a fired dielectric material. The dielectric material can be fired below 950° C. or below 1100° C., has a K value of less than about 8 at 10-30 GHz and a Q value of greater than 500 or greater than 1000 at 10-30 GHz. The dielectric material includes, before firing a solids portion including 10-95 wt % or 10-99 wt % silica powder and 5-90 wt % or 1-90 wt % glass component. The glass component includes 50-90 mole % SiO2, 5-35 mole % or 0.1-35 mole % B2O3, 0.1-10 mole % or 0.1-25 mole % Al2O3, 0.1-10 mole % K2O, 0.1-10 mole % Na2O, 0.1-20 mole % Li2O, 0.1-30 mole % F. The total amount of Li2O+Na2O+K2O is 0.1-30 mole % of the glass component. The silica powder can be amorphous or crystalline.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 9, 2019
    Inventors: Cody J. Gleason, John J. Maloney, Srinivasan Sridharan, George E. Sakoske, Peter Marley, Mohammed H. Megherhi, Yie-Shein Her, Orville W. Brown, Jackie D. Davis, Thomas J. Coffey, Ellen S. Tormey, Stanley Wang, David L. Widlewski
  • 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
  • Publication number: 20190055155
    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: Application
    Filed: May 3, 2017
    Publication date: February 21, 2019
    Inventors: Srinivasan Sridharan, John J. Maloney, George E. Sakoske, Gregory R. Prinzbach, David Widlewski, Jackie Davis, Bradford Smith
  • 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: 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: 20180186687
    Abstract: A sintered machinable glass-ceramic is provided. The machinable glass-ceramic is formed by mixing phyllosilicate material having a sheet structure, with a glass fit and firing the mixture at relatively low temperatures to sinter the phyllosilicate, while maintaining the sheet-like morphology of the phyllosilicate and its associated cleaving properties. The sintered machinable glass-ceramic can be machined with conventional metal working tools and includes the electrical properties of the phyllosilicate. Producing the sintered machinable glass-ceramic does not require the relatively high-temperature bulk nucleation and crystallization needed to form sheet phyllosilicate phases in situ.
    Type: Application
    Filed: December 2, 2016
    Publication date: July 5, 2018
    Inventors: Srinivasan Sridharan, George E. Sakoske, John J. Maloney, Cody Gleason, Gregory R. Prinzbach, Bradford Smith, Chih Cheng Wang
  • Publication number: 20180186120
    Abstract: The present invention describes a new method for creating hybrid edge seals using metal, alloy, powder coated metal and other conductive surfaces in between two substrates. The methods utilize various materials, seal designs, and geometries of hybrid seals based on polymeric powder coatings and glass powder coatings.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 5, 2018
    Inventors: Vineet Dua, Chandrashekhar S. Khadilkar, Srinivasan Sridharan, George E. Sakoske, Jackie Davis
  • 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: 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: 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: 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
  • Patent number: 9671529
    Abstract: The present subject matter provides a transitional layer and related methods, used to increase the transmission or reflection of light between two mediums having different indices of refraction. The transitional layer is disposed between the two mediums and the transmission or reflection of light is increased by the interaction of light with the transitional layer. The transitional layer has light scattering particles dispersed therein, a single-layer gradient index-of-refraction, a multi-layer gradient index-of-refraction, alternating layers of high and low index-of-refraction, or a combination thereof, in order to increase the transmission or reflectance of light between the two mediums.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: June 6, 2017
    Assignee: Ferro Corporation
    Inventors: George E. Sakoske, Enos A. Axtell, III, James D. Walker