Patents Assigned to Ferro Corporation
  • Publication number: 20130111953
    Abstract: Durable hermetic seals between two inorganic substrates are produced using a high-intensity electromagnetic energy source, such as laser, to heat and seal enamel layers with controlled absorption of high-intensity energy source. Durable hermetic seals incorporating electrical feedthroughs are also produced.
    Type: Application
    Filed: April 27, 2011
    Publication date: May 9, 2013
    Applicant: FERRO CORPORATION
    Inventors: John J. Maloney, Robert P. Blonski, Chandrashekhar S. Khadilkar, Srinivasan Sridharan
  • Publication number: 20130104980
    Abstract: Glasses comprising Bi203, ZnO B203 and optionally a colorant including an oxide of a metal such as iron, cobalt, manganese, nickel, copper and chromium are suitable to form hermetic seals in solar cell modules, architectural glass windows and MEMS devices. Glass frit and paste compositions suitable for flow and bonding to various substrates—glass, metal, silicon, in the temperature range of 400-500 degrees Centigrade. The broad compositional range in mole % is 25-70% Bi203, up to 65% ZnO, and 1-70% B203. Such glasses do not have batched in alumina or silica. Such glasses lack alumina and silica.
    Type: Application
    Filed: April 15, 2011
    Publication date: May 2, 2013
    Applicant: FERRO CORPORATION
    Inventors: Srinivasan Sridharan, John J. Maloney, Chandrashekhar Khadilkar, Robert P. Blonski, David L. Widlewski
  • Patent number: 8409990
    Abstract: The present invention provides an aqueous CMP slurry composition that includes abrasive particles and from about 0.01% to the limit of solubility in water of a compound according to Formula (I): wherein only one of R1, R2, R3, R4 and R5 is a hydroxyl group (—OH), only one of R1, R2, R3, R4 and R5 is a methoxy group (—OCH3), and the three of R1, R2, R3, R4 and R5 that are not either a hydroxyl group (—OH) or a methoxy group (—OCH3) are hydrogen atoms (—H).
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: April 2, 2013
    Assignee: Ferro Corporation
    Inventor: Bradley M. Kraft
  • Publication number: 20130062712
    Abstract: Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Robert D. Gardner, Keith M. Mason, Srinivasan Sridharan, Aziz S. Shaikh
  • Publication number: 20130045389
    Abstract: A composition that upon firing, forms a low-temperature clean enamel layer is disclosed. The composition can be applied to a metal substrate to provide a low-temperature cleaning, durable coating for cooking surfaces. Also disclosed are methods of forming enamel layers and corresponding coated substrates. Various ground coats and related methods are also described. Furthermore, various multilayer coatings and structures are disclosed that include an enamel layer and a ground coat layer.
    Type: Application
    Filed: October 26, 2012
    Publication date: February 21, 2013
    Applicant: FERRO CORPORATION
    Inventor: Ferro Corporation
  • Publication number: 20130040392
    Abstract: Various agents for improving adhesion of cold end coatings on glass surfaces are described Also described are agents for improving bonding between cold end coatings and organic inks. And, methods and related detection solutions for detecting the presence of cold end coatings on a substrate such as a glass bottle are disclosed. Additionally, particular additives and primers are described that can be applied onto cold end coatings for improving adhesion thereto.
    Type: Application
    Filed: January 21, 2011
    Publication date: February 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Cindy Pankiewicz, Thirumalai Duraisamy, Bertram Gardner, Ian Dudas, David C. Kapp, Enos A. Axtell, III, George E. Sakoske
  • Publication number: 20130040422
    Abstract: Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle.
    Type: Application
    Filed: September 13, 2012
    Publication date: February 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Srinivasan Sridharan
  • Publication number: 20130036944
    Abstract: A pigment additive and resulting pigment are described that when incorporated in paints for example, significantly increases total solar reflectance. Also described are compositions utilizing the noted pigments, and related methods. The pigments are formed from iron oxide and/or chromium oxide and utilize as an additive, one or more phosphate compounds.
    Type: Application
    Filed: February 18, 2011
    Publication date: February 14, 2013
    Applicant: FERRO CORPORATION
    Inventors: Gary L. Nuccetelli, Lei Wang, Daniel R. Swiler
  • Patent number: 8307674
    Abstract: Hot-melt sealing glass compositions that include one or more glass frits dispersed in a polymeric binder system. The polymeric binder system is a solid at room temperature, but melts at a temperature of from about 35° C. to about 90° C., thereby forming a flowable liquid dispersion that can be applied to a substrate (e.g., a cap wafer and/or a device wafer of a MEMS device) by screen printing. Hot-melt sealing glass compositions according to the invention rapidly re-solidify and adhere to the substrate after being deposited by screen printing. Thus, they do not tend to spread out as much as conventional solvent-based glass frit bonding pastes after screen printing. And, because hot-melt sealing glass compositions according to the invention are not solvent-based systems, they do not need to be force dried after deposition.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: November 13, 2012
    Assignee: Ferro Corporation
    Inventors: Robert D. Gardner, Keith M. Mason, Srinivasan Sridharan, Aziz S. Shaikh
  • Patent number: 8309844
    Abstract: Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: November 13, 2012
    Assignee: Ferro Corporation
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Srinivasan Sridharan
  • Publication number: 20120282407
    Abstract: This invention relates to glass and enamel compositions. The glass compositions comprise SiO2, Cs2O, Na2O, ZnO, B2O3, and TiO2, and optionally Bi2O3 and F. The resulting compositions can be used to form an enamel on a substrate, for example, to decorate and/or protect the substrate.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 8, 2012
    Applicant: FERRO CORPORATION
    Inventors: Sandeep K. Singh, George E. Sakoske, David A. Klimas
  • Patent number: 8305731
    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 include 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: Grant
    Filed: October 27, 2008
    Date of Patent: November 6, 2012
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Mike S. H. Chu
  • Publication number: 20120270476
    Abstract: The present invention provides a slurry composition and method for polishing organic polymer-based ophthalmic substrates. The slurry composition according to the invention includes an aqueous dispersion of particles of diatomaceous earth and, optionally, particles of abrasives selected from alumina, zirconia, silica, titania and combinations of the foregoing. Slurry compositions according to the invention can be used to polish all types of organic polymer-based ophthalmic substrates, but are particularly useful for polishing organic polymer-based ophthalmic substrates having an index of refraction greater than 1.498 because they remove such materials at a greater efficiency than conventional slurry compositions.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 25, 2012
    Applicant: FERRO CORPORATION
    Inventor: Yue Liu
  • Publication number: 20120270366
    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 frit 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: July 6, 2012
    Publication date: October 25, 2012
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Paul S. Seman, Aziz S. Shaikh
  • Publication number: 20120213943
    Abstract: An aqueous marking composition is described which upon application to a polymeric surface and laser irradiation, produces one or more marks or other indicia having high contrast in the polymeric surface.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 23, 2012
    Applicant: FERRO CORPORATION
    Inventors: Joseph E. Sarver, Stephen Rozwood, George E. Sakoske, Sean Weir, Dennis Gilmore
  • Patent number: 8236598
    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 frit 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: Grant
    Filed: August 29, 2008
    Date of Patent: August 7, 2012
    Assignee: Ferro Corporation
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Paul S. Seman, Aziz S. Shaikh
  • Publication number: 20120196126
    Abstract: This invention relates to lead free and cadmium free copper-containing glass fits that can be used as pigments to color other glass fits or to impart color to solid substrates such as glass, ceramic or metals, or to impart color to a thermoplastic mass. The compositions comprise silica, alkali metal oxides, alkaline earth metal oxides, tin oxide and copper oxide. The resulting compositions can be used to decorate and protect automotive, beverage, architectural, pharmaceutical and other glass substrates, generally imparting a red color.
    Type: Application
    Filed: June 16, 2010
    Publication date: August 2, 2012
    Applicant: FERRO CORPORATION
    Inventors: Enos A. Axtell, III, George E. Sakoske, Andreas Schulz, Juergen Hanich, Lothar Heck, Dietrich Speer, Martin Baumann
  • Publication number: 20120186647
    Abstract: A method of reducing bow and/or improving the electrical performance of an aluminum back contacted silicon solar cell includes applying to a silicon wafer substrate a paste including aluminum and an organometallic compound, and firing the substrate. The organometallic compound is a C1 to C30 organometallic compound of a metal selected from the group consisting of Ag, Al, Ba, Bi, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Nd, Ni, Sb, Si, Sn, Sr, Ta, V, Zn, Zr. A paste is formed having an exothermic reaction peak at a temperature of at least 300° C. to less than 660° C.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 26, 2012
    Applicant: FERRO CORPORATION
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Hong Jiang
  • Publication number: 20120174974
    Abstract: Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660° C. to less than 900° C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 12, 2012
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Nazarali Merchant, Jackie Davis, Aziz S. Shaikh, Hong Jiang
  • Publication number: 20120178207
    Abstract: Al pastes with additives of Co, Sr, V, compounds thereof and combinations thereof improve both the physical integrity of a back contact of a silicon solar cell as well as the electrical performance of a cell with such a contact.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 12, 2012
    Applicant: FERRO CORPORATION
    Inventors: Hong Jiang, Chandrashekhar S. Khadilkar, Nazarali Merchant, Srinivasan Sridharan, Aziz S. Shaikh