Patents Assigned to Ferro Corporation
  • Lead And Cadmium Free, Low Temperature Fired X7R Dielectric Ceramic Composition And Method Of Making
    Publication number: 20100220427
    Abstract: Multilayer ceramic chip capacitors (MLCC's) which satisfy X7R TCC requirements and which are compatible with silver-palladium internal electrodes. The MLCC's exhibit desirable dielectric properties—high capacitance, low dissipation factor, high insulation resistance, stable TCC—and excellent performance on highly accelerated life testing, and good resistance to dielectric breakdown. The dielectric layers comprise a lead-free and cadmium-free barium titanate base material doped with other metal oxides such oxides of zinc, boron, bismuth, barium, titanium, praseodymium, cerium, tungsten, neodymium, tungsten, tin, niobium, copper, and/or manganese in various combinations. The dielectric ceramic materials herein can be fired at less than 1150° C. with an inner electrode having 70 wt % or more Ag and 30 wt % or less Pd to form an MLCC.
    Type: Application
    Filed: October 27, 2008
    Publication date: September 2, 2010
    Applicant: FERRO CORPORATION
    Inventors: Walter J. Symes, JR., Mike S. H. Chu
  • Triazine Compounds For Removing Acids And Water From Nonaqueous Electrolytes For Electrochemical Cells
    Publication number: 20100192363
    Abstract: A process is provided to produce non-aqueous electrolytic solution for use in batteries having low acid content and low water content. The invention involves removing acids and water from non-aqueous electrolytic solutions typically found in lithium or lithium-ion batteries by using nitrogen-containing compounds such as triazines. After treatment by a triazine such as melamine, the concentrations of acids and water in the electrolytic solutions are substantially decreased. The present invention provides a process to prepare extremely pure electrolytic solutions having low (<20 ppm) concentrations of both water and acids.
    Type: Application
    Filed: April 14, 2010
    Publication date: August 5, 2010
    Applicant: FERRO CORPORATION
    Inventors: Zhongyi Deng, Jerry L. Decker, Wu Xu, John R. Sans, Pascal Bolomey
  • Nanoparticles from supercritical fluid antisolvent process using particle growth and agglomeration retardants
    Patent number: 7767118
    Abstract: The present invention provides a method of forming particles using supercritical fluid (SCF). In accordance with the method, one or more growth retardant compounds having both SCF-philic and SCF-phobic groups are present when one or more solute materials reach a supersaturation point and begin to form particle nuclei. The growth retardant compounds can reduce the particle growth rate, increase the nucleation rate and also prevent particle agglomeration. Preferred growth retardant compounds include sugar acetates and fluorocarbons.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: August 3, 2010
    Assignee: Ferro Corporation
    Inventors: Boris Y. Shekunov, Pratibhash Chattopadhyay, Jeffrey S. Seitzinger
  • Porcelain enamel having a metallic appearance
    Patent number: 7763557
    Abstract: A porcelain enamel composition having a metallic appearance is disclosed. The composition comprises about 45% to about 55% SiO2, about 4 to about 20% R2O, about 9 to about 15% B2O3, about 4 to about 12% MnO2, about 1.5 to about 7% F2, about 0% to about 20% MO2, about 0% to about 10% RO, about 0% to about 6% NO2, about 0% to about 2% P2O5, about 0% to about 3% CoO, about 0% to about 3% NiO, about 0% to about 3% Al2O3, about 0% to about 3% Fe2O3, about 0% to about 3% CuO, about 0% to about 4% ZrO2, about 0% to about 2% Nb2O5, and about 0% to about 5% Sb2O3, wherein R2O represents at least one alkali oxide, wherein RO represents at least one alkaline earth oxide and wherein MO2 represents at least one opacifying pigment selected from the group consisting of ZrO2, TiO2, CeO2, SnO2 and La2O3.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: July 27, 2010
    Assignee: Ferro Corporation
    Inventors: Charles A. Baldwin, David P. Fedak, Bradley E. Devine
  • Layered Contact Structure For Solar Cells
    Publication number: 20100173446
    Abstract: Formulations and methods of making semiconductor devices and solar cell contacts are disclosed. The invention provides a method of making a semiconductor device or solar cell contact including ink-jet printing onto a silicon wafer an ink composition, typically including a high solids loading (20-80 wt %) of glass fit and preferably a conductive metal such as silver. The wafer is then fired such that the glass frit fuses to form a glass, thereby forming a contact layer to silicon.
    Type: Application
    Filed: August 29, 2008
    Publication date: July 8, 2010
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Paul S. Seman, Aziz S. Shaikh
  • Thick Film Conductor Formulations Comprising Silver And Nickel Or Silver And Nickel Alloys And Solar Cells Made Therefrom
    Publication number: 20100163101
    Abstract: Formulations and methods of making solar cells and solar cell contacts are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a metal portion, which, prior to firing, comprises nickel and silver.
    Type: Application
    Filed: April 24, 2008
    Publication date: July 1, 2010
    Applicant: FERRO CORPORATION
    Inventors: Umesh Kumar, Virginia L. Whitford, Srinivasan Sridharan, Aziz S. Shaikh
  • Methods for the purification of polymers
    Patent number: 7745566
    Abstract: The present invention provides methods for purifying polymers. In each embodiment of the invention disclosed herein, a supercritical fluid is contacted with an organic solution that includes a polymer to be purified dissolved in an organic solvent. The supercritical fluid extracts the organic solvent from the organic solution. Impurities such as residual monomers and process solvents are removed with the organic solvent and supercritical fluid, thereby purifying the polymer. The methods of the invention are particularly suitable for use in the purification of biodegradable polymers for use in pharmaceutical applications.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: June 29, 2010
    Assignee: Ferro Corporation
    Inventors: Pratibhash Chattopadhyay, Boris Y. Shekunov, K. Adam Gibson
  • Electronic device having lead and cadmium free electronic overglaze applied thereto
    Patent number: 7740899
    Abstract: The present invention provides an electronic device having a lead-free and cadmium-free glass composition applied thereto and fired to form an acid resistant overglaze, and a method of overglazing an electronic device using the lead-free and cadmium-free glass composition. The lead-free and cadmium-free glass composition fuses at low firing temperatures and is particularly suitable for use in thick film pastes. The glass composition forms predominantly bismuth titanate and/or zinc titanate crystals upon firing. Preferably, glass compositions include by weight from about 11% to about 52% SiO2, from 3.4% to about 40% TiO2, up to about 75% Bi2O3, up to about 40% by weight ZnO, where the sum of Bi2O3 and ZnO comprises from about 15% to about 85% of the glass composition by weight.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: June 22, 2010
    Assignee: Ferro Corporation
    Inventors: Srinivasan Sridharan, Michail Moroz
  • Forehearth concentrate and method for opalization of glass
    Patent number: 7737062
    Abstract: The invention provides an opalescent forehearth color concentrate comprising a non-smelted agglomerated interspersion of particles for use in coloring glass, said concentrate comprising by weight from about 10% to about 70% of a glass component and from about 30% to about 90% of one or more opalescent pigments, the glass component comprising by weight from about 10% to about 50% ZnO and about 15 to about 60% SiO2. The invention also provides a method of using the color concentrate.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: June 15, 2010
    Assignee: Ferro Corporation
    Inventors: George E. Sakoske, Kenneth R. Ackerman, John M. Bauer
  • X8R dielectric composition for use with nickel electrodes
    Patent number: 7727922
    Abstract: Multilayer ceramic chip capacitors which satisfy X8R 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 titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: June 1, 2010
    Assignee: Ferro Corporation
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Special Effect Pigments
    Publication number: 20100126562
    Abstract: The present invention provides mixed metal oxide based special effect pigments that can be incorporated into optically thin binder systems to produce a “metal flake” appearance that is superior to the “metal flake” appearance presently achievable using conventional special effect pigments. Special effect pigments according to the invention comprise at least 10 wt % of mixed metal oxides that exhibit the McConnellite (Cu1+Cr3+O2) crystal structure. Other metallic elements can be incorporated into the crystal lattice structure to alter the appearance effect of the pigments.
    Type: Application
    Filed: July 25, 2007
    Publication date: May 27, 2010
    Applicant: FERRO CORPORATION
    Inventors: Daniel R. Swiler, Gary L. Nuccetelli, Sean T. Weir
  • Asymmetric Cyclic Diester Compounds
    Publication number: 20100113664
    Abstract: Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl asymmetric cyclic diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds. Blends of these asymmetric cyclic diesters with other plasticizers are demonstrated to be of use in plasticizing polymers.
    Type: Application
    Filed: December 10, 2009
    Publication date: May 6, 2010
    Applicant: FERRO CORPORATION
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
  • METHOD OF MAKING SOLAR CELL CONTACTS
    Publication number: 20100096598
    Abstract: Formulations and methods of making solar cells are disclosed. In general, the invention presents a solar cell contact made from a mixture wherein the mixture comprises a solids portion and an organics portion, wherein the solids portion comprises from about 85 to about 99 wt % of silver, and from about 1 to about 15 wt % of a glass component wherein the glass component comprises from about 15 to about 75 mol % PbO, and from about 5 to about 50 mol % SiO2, and preferably with no B2O3.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 22, 2010
    Applicant: FERRO CORPORATION
    Inventors: Srinivasan Sridharan, Tung Pham, Chandrashekhar S. Khadilkar, Aziz S. Shaikh
  • Auto-stopping slurries for chemical-mechanical polishing of topographic dielectric silicon dioxide
    Patent number: 7696095
    Abstract: The present invention provides auto-stopping CMP slurry compositions that minimize post-CMP non-uniformity and also extend the time that polishing can be continued beyond the end point without the risk of over-polishing the dielectric silicon dioxide film. Auto-stopping CMP slurry compositions according to the invention include ceria abrasive particles and an effective amount of a polyalkylamine such as polyethyleneimine dispersed in water. The methods of the invention include polishing a topographic dielectric silicon dioxide film layer using the auto-stopping CMP slurry compositions to obtain a dielectric silicon dioxide surface having a desired predetermined minimum step height.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: April 13, 2010
    Assignee: Ferro Corporation
    Inventors: Eric Oswald, Sean Frink, Bradley Kraft, Brian Santora
  • Substantially spherical composite ceria/titania particles
    Patent number: 7687401
    Abstract: The present invention provides substantially spherical composite ceria/titania particles, a method of forming the same, and chemical mechanical polishing compositions comprising such particles. The substantially spherical particles include a substantially crystalline core portion including one or more crystallites having a cubic lattice structure including Ce(1-x)Ti(x)O2, where x is <0.25, and a substantially amorphous cladding covering at least a portion of the substantially crystalline core portion, the substantially amorphous cladding including Ti(1-y)Ce(y)O2, where y is ?0.50. The method of forming the particles includes combusting an organic solvent including a cerium salt of a carboxylic acid and a titanium (IV) chelate in a combustion supporting gas and collecting agglomerates comprising two or more substantially spherical particles.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: March 30, 2010
    Assignees: Ferro Corporation, Nanocerox, Inc.
    Inventors: Xiangdong Feng, Yie-Shein Her, Anthony C. Sutorik, M. Sharon Paras
  • Method Of Decorating Laminated Glass
    Publication number: 20100071837
    Abstract: A method of decorating laminated glass is disclosed. A pigment package composition comprising a cross-linkable thermoset resin, a crosslinker capable of crosslinking the thermoset resin, and a pigment is applied to a glass substrate. The crosslinker and thermoset resin are cured at a relatively low temperature (ca. 400° F.). The use of an organic based pigment composition allows use of thinner glass sheets than with traditional ceramic enamel pigment compositions.
    Type: Application
    Filed: September 28, 2009
    Publication date: March 25, 2010
    Applicant: Ferro Corporation
    Inventors: David C. Kapp, David L. McGowan, George E. Sakoske, Kimberly Ann Stewart, David M. Stotka
  • Corundum Crystal Structure Pigments With Reduced Soluble Chromium Content
    Publication number: 20100064942
    Abstract: The potential for release of soluble chromium (VI) ions in the production or processing of certain pigments is reduced by use of certain additives. The additives include aluminum metaphosphate, aluminum fluoride, tungsten oxide, tungstic acid, and mono-ammonium phosphate. The pigments are those which contain chromium and have a corundum crystal structure.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Applicant: FERRO CORPORATION
    Inventors: Terry J. Detrie, Raymond E. Barnes, Jacqueline C. Livingston, Gary L. Nuccetelli, Richard A. Pipoly, Daniel R. Swiler, Lei Wang
  • Hydrothermal synthesis of cerium-titanium oxide for use in CMP
    Patent number: 7666239
    Abstract: The present invention provides a method of synthesizing abrasive particles and methods of using the same in chemical mechanical polishing slurry applications. The nanosized abrasive particles according to the invention are produced by hydrothermal synthesis using an insoluble source of cerium. The crystallites of the particles include cerium ions and titanium ions.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: February 23, 2010
    Assignee: Ferro Corporation
    Inventors: Xiangdong Feng, Yie-Shein Her, Yi Yang
  • Zinc Containing Glasses And Enamels
    Publication number: 20100009836
    Abstract: This invention relates to lead free, cadmium free, bismuth free low melting high durability glass and enamel compositions. The compositions comprise silica, zinc, titanium, and boron oxide based glass frits. The resulting compositions can be used to decorate and protect automotive, beverage, architectural, pharmaceutical and other glass substrates.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 14, 2010
    Applicant: FERRO CORPORATION
    Inventor: George E. Sakoske
  • Zinc Containing Glasses And Enamels
    Publication number: 20100009837
    Abstract: This invention relates to lead free, cadmium free, bismuth free low melting high durability glass and enamel compositions. The compositions comprise silica, zinc, titanium, and boron oxide based glass frits. The resulting compositions can be used to decorate and protect automotive, beverage, architectural, pharmaceutical and other glass substrates.
    Type: Application
    Filed: February 10, 2009
    Publication date: January 14, 2010
    Applicant: FERRO CORPORATION
    Inventor: George E. Sakoske