Patents Assigned to Ferro Corporation
  • Asymmetric Cyclic Diester Compounds
    Publication number: 20090312470
    Abstract: Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl 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.
    Type: Application
    Filed: April 10, 2009
    Publication date: December 17, 2009
    Applicant: FERRO CORPORATION
    Inventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
  • Butyl lactate emulsions for the precipitation of water-insoluble drug nanoparticles
    Patent number: 7595348
    Abstract: Emulsions for use in precipitating water-insoluble drug nanoparticles. The continuous phase of the emulsions include water and an external surfactant. The discontinuous phase of the emulsions include butyl lactate, a co-solvent, an internal surfactant and a water-insoluble drug that is solubilized in the discontinuous phase. The emulsions allow for the precipitation of nanoparticles of water-insoluble drugs that are otherwise difficult or impossible to precipitate using conventional emulsion techniques.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: September 29, 2009
    Assignee: Ferro Corporation
    Inventors: Pratibhash Chattopadhyay, Boris Y. Shekunov, Adam K. Gibson
  • Method Of Making Multilayer Structures Using Tapes On Non-Densifying Substrates
    Publication number: 20090220799
    Abstract: A method of applying a ceramic coating to a substrate comprises laminating one or more layers of a green ceramic tape to a rigid substrate using a tackifying resin to adhere the tape to the substrate. Upon firing, the tackifying resin ensures near zero shrinkage of the tape in the XY plane without usage of elevated pressures or temperatures during lamination of green tape to the substrate. The thermal degradation completion temperature of the tackifying resin is lower than that of the resin binder used in the green tape.
    Type: Application
    Filed: May 13, 2009
    Publication date: September 3, 2009
    Applicant: FERRO CORPORATION
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Aziz S. Shaikh
  • X8R Dielectric Composition For Use With Nickel Electrodes
    Publication number: 20090213527
    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: Application
    Filed: May 4, 2009
    Publication date: August 27, 2009
    Applicant: FERRO CORPORATION
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Method of making multilayer structures using tapes on non-densifying substrates
    Patent number: 7547369
    Abstract: A method of applying a ceramic coating to a substrate comprises laminating one or more layers of a green ceramic tape to a rigid substrate using a tackifying resin to adhere the tape to the substrate. Upon firing, the tackifying resin ensures near zero shrinkage of the tape in the XY plane without usage of elevated pressures or temperatures during lamination of green tape to the substrate. The thermal degradation completion temperature of the tackifying resin is lower than that of the resin binder used in the green tape.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: June 16, 2009
    Assignee: Ferro Corporation
    Inventors: Chandrashekhar S. Khadilkar, Srinivasan Sridharan, Aziz S. Shaikh
  • X8R dielectric composition for use with nickel electrodes
    Patent number: 7541306
    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: January 17, 2007
    Date of Patent: June 2, 2009
    Assignee: Ferro Corporation
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Process for structuring self-cleaning glass surfaces
    Patent number: 7527832
    Abstract: A plasma spray process for structuring self-cleaning glass surfaces and self-cleaning glass surfaces formed according to the process. Molten or heat softened particles of inorganic material are plasma spray deposited onto the surface of a substrate to create a micro-rough surface. If desired, a hydrophobic top coating layer can optionally be applied to the micro-rough surface. The micro-structured surface formed according to the invention is durable and self-cleaning.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: May 5, 2009
    Assignee: Ferro Corporation
    Inventors: George E. Sakoske, Martin Baumann, Enos A. Axtell, III
  • Structured self-cleaning surfaces and method of forming same
    Patent number: 7524531
    Abstract: The present invention involves growing diatoms on a surface for the purpose of forming nanoscale-sized siliceous structures on the surface. In accordance with the invention, diatom films are grown on various substrates, which are then fired to remove all organic material from the diatoms and produce a surface coated with intricate, nanoscale-sized structures. The nanoscale-sized structured surface is subsequently treated with a hydrophobic film-forming agent to form a structured self-cleaning surface.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: April 28, 2009
    Assignee: Ferro Corporation
    Inventors: Enos A. Axtell, III, George E. Sakoske, Daniel R. Swiler, Michael Hensel, Martin Baumann, David J. Matalka, Gary L. Nuccetelli
  • Solar Cell Contacts Containing Aluminum And At Least One Of Boron, Titanium, Nickel, Tin, Silver, Gallium, Zinc, Indium And Copper
    Publication number: 20090101190
    Abstract: Formulations and methods of making solar cell contacts and cells therewith are disclosed. In general, the invention provides a solar cell comprising a contact made from a mixture wherein, prior to firing, the mixture comprises at least one aluminum source, at least one source of a metal including one or more of boron, titanium, nickel, tin, gallium zinc, indium, and copper, and about 0.1 to about 10 wt % of a glass component. Within the mixture, the overall content of aluminum is about 50 wt % to about 85 wt % of the mixture, and the overall combined content of boron, nickel, tin, silver, gallium, zinc, indium, copper, is about 0.05 to about 40 wt % of the mixture.
    Type: Application
    Filed: July 9, 2007
    Publication date: April 23, 2009
    Applicant: FERRO CORPORATION
    Inventors: Jalal Salami, Srinivasan Sridharan, Steve S. Kim, Aziz S. Shaikh
  • Ultra low temperature fixed X7R and BX dielectric ceramic composition and method of making
    Patent number: 7521390
    Abstract: Multilayer ceramic chip capacitors which satisfy X7R and BX requirements and which are compatible with silver-palladium internal 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 lead-free and cadmium-free barium titanate base material doped with other metal oxides such oxides of zinc, boron, bismuth, cerium, tungsten, copper, manganese, neodymium, niobium, silver, barium, silicon and nickel in various combinations. The dielectric ceramic materials herein can be sintered together (fired) at less than 1000° C. with an inner electrode having more than 80 wt % Ag and less than 20 wt % Pd to form a multilayer ceramic capacitor (MLCC).
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: April 21, 2009
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Mike S. H. Chu
  • Lead-free and cadmium-free conductive copper thick film pastes
    Patent number: 7504349
    Abstract: Thick film conductive copper pastes that are lead-free and cadmium-free. The inventive copper pastes possess desirable characteristics, including good solderability, good wire bondability, a low firing temperature, and a wide temperature processing window, and provide excellent adhesion to a variety of substrates, including alumina and glass coated stainless steel substrates, as well as low resistivity, and a microstructure after firing that is dense and substantially free of pores.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: March 17, 2009
    Assignee: Ferro Corporation
    Inventors: Orville W. Brown, Srinivasan Sridharan
  • Thick Film Pastes For Fire Through Applications In Solar Cells
    Publication number: 20090056798
    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: August 29, 2007
    Publication date: March 5, 2009
    Applicant: FERRO CORPORATION
    Inventors: Nazarali Merchant, Aziz S. Shaikh, Srinivasan Sridharan
  • Ether-ester plasticizers
    Patent number: 7498372
    Abstract: The present invention provides compounds having both a pendent ether group and a pendent ester group that are useful as plasticizers for polymer resin and methods of making and using the same. In one embodiment of the invention, compounds according to the invention are formed by converting at least one, but not all, of the hydroxyl groups of a polyol having three or more hydroxyl groups (e.g., gylcerol, pentaerythritol or dipentaerythritol) to a pendent ether group to form a partially-etherized intermediate, and then converting at least one of the remaining hydroxyl groups in the partially-etherized intermediate to a pendent ester group.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 3, 2009
    Assignee: Ferro Corporation
    Inventor: George F. Schaefer
  • Ultra Low-Emissivity (Ultra Low E) Silver Coating
    Publication number: 20090029057
    Abstract: A silver conductive coating possessing infrared absorbing properties is disclosed. The coating is made from a blend of one or more micron size silver powders and/or flakes together with carbon black, inorganic pigment, glass frit, and powdered selenium or bismuth metal. The foregoing dry ingredients are pasted with an organic vehicle, applied to a substrate, and fired at a temperature of up to 1400° F. The coating absorbs infrared radiation beyond the decomposition of carbon black, thus allowing higher firing temperatures and hence shorter firing times.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Applicant: FERRO CORPORATION
    Inventors: Terry J. Brown, David M. Stotka, William G. Picard, George E. Sakoske
  • Non-Aqueous Electrolytic Solutions And Electrochemical Cells Comprising The Same
    Publication number: 20090017386
    Abstract: Non-aqueous electrolyte solutions capable of protecting negative electrode materials such as lithium metal and carbonaceous materials in energy storage electrochemical cells (e.g., lithium metal batteries, lithium ion batteries and supercapacitors) include an electrolyte salt, a non-aqueous electrolyte solvent mixture, an unsaturated organic compound 4-methylene-1,3-dioxolan-2-one or 4,5-dimethylene-1,3-dioxolan-2-one, and other optional additives. The 1,3-dioxolan-2-ones help to form a good solid electrolyte interface on the negative electrode surface.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 15, 2009
    Applicant: FERRO CORPORATION
    Inventors: Wu Xu, Pascal Bolomey, Martin W. Payne
  • Chemical-Mechanical Polishing Compositions Containing Aspartame And Methods Of Making And Using The Same
    Publication number: 20080314872
    Abstract: The present invention provides an aqueous CMP slurry composition that comprises abrasive particles and Aspartame. The CMP slurry composition according to the invention is selective for polishing silicon dioxide in preference to silicon nitride from a surface of an article by chemical mechanical planarization. Furthermore, as more Aspartame is added to the slurry, the silicon dioxide rate is either not greatly affected or increases and the silicon nitride rate stays extremely low. In addition to offering selectivity of silicon dioxide to silicon nitride polishing, the present invention provides a method of using Aspartame as a polish accelerant in silicon dioxide polishing.
    Type: Application
    Filed: April 17, 2008
    Publication date: December 25, 2008
    Applicant: FERRO CORPORATION
    Inventors: Yue Liu, Brian Santora
  • Slurry composition and method for polishing organic polymer-based ophthalmic substrates
    Patent number: 7467988
    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 abrasive particles and a pyrrolidone compound. The abrasive particles can be alumina, zirconia, silica, titania or 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 without detrimentally affecting the quality of the resulting surface.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: December 23, 2008
    Assignee: Ferro Corporation
    Inventor: Steven A. Ferranti
  • Method and apparatus for producing particles using supercritical fluid
    Patent number: 7455797
    Abstract: The present invention provides a method of producing particles via a supercritical fluid processing technique, an apparatus for carrying out the method and the particles produced thereby. The method includes: (1) providing: a supercritical fluid; a first solvent that is soluble in the supercritical fluid; a second solvent that is substantially insoluble in the supercritical fluid and is at least partially soluble in or miscible with the first solvent; and a solute that is soluble in the first solvent and is substantially insoluble in the second solvent and the supercritical fluid; (2) contacting the first solvent, the second solvent and the solute together to form a solution; and (3) contacting the solution with the supercritical fluid to extract the first solvent from the solution and precipitate the solute in the form of particles that are suspended in the second solvent.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: November 25, 2008
    Assignee: Ferro Corporation
    Inventors: Boris Y. Shekunov, Pratibhash Chattopadhyay, Jeffrey S. Seitzinger, Robert Huff
  • Method For Producing Solid-Lipid Composite Drug Particles
    Publication number: 20080286365
    Abstract: A method of producing solid composite lipid/drug nanoparticles that includes the steps of: (1) dissolving a lipid and a drug in a suitable organic solvent to form a solution; (2) emulsifying the solution in a liquid to form an emulsion having a discontinuous phase of micelles comprising the organic solvent, the drug and the lipid, and a continuous phase comprising the liquid; and (3) contacting the emulsion with a supercritical fluid under conditions suitable to keep the supercritical fluid in a supercritical state, whereby the supercritical fluid extracts the organic solvent from the micelles, causing them to precipitate as organic-solvent free solid composite lipid/drug nanoparticles suspended or dispersed in the liquid.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 20, 2008
    Applicant: FERRO CORPORATION
    Inventors: Boris Y. Shekunov, Pratibhash Chattopadhyay, Robert W. Huff
  • POLISHING COMPOSITION AND METHOD FOR HIGH SELECTIVITY POLYSILICON CMP
    Publication number: 20080274618
    Abstract: The present invention provides a polishing composition and a method for removing polysilicon in preference to silicon dioxide, silicate glasses and/or silicon nitride via chemical-mechanical polishing during semiconductor device fabrication. In a preferred embodiment, the polishing composition includes an aqueous dispersion of ceria abrasive particles, from about 0.005% to about 0.15% by weight of a polyethyleneimine and a sufficient amount of an acid to adjust the pH of the polishing composition within the range of from about 4.7 to about 5.1. The polishing composition can be used to remove polysilicon via CMP at removal rates that are acceptable in semiconductor device fabrication applications while simultaneously suppressing the rate at which silicon dioxide, silicate glasses and silicon nitride are removed.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 6, 2008
    Applicant: FERRO CORPORATION
    Inventor: Bradley Kraft