Patents Examined by Noah Wiese
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Patent number: 9764982Abstract: Lithium disilicate apatite glass-ceramics are described which are characterized by a high chemical stability and can therefore be used in particular as restoration material in dentistry.Type: GrantFiled: May 17, 2016Date of Patent: September 19, 2017Assignee: Ivoclar Vivadent AGInventors: Christian Ritzberger, Wolfram Holand, Marcel Schweiger, Volker Rheinberger
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Patent number: 9757217Abstract: Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.Type: GrantFiled: May 10, 2013Date of Patent: September 12, 2017Assignee: Ivoclar Vivadent AGInventors: Harald Bürke, Christian Ritzberger, Marcel Schweiger, Volker Rheinberger, Diana Tauch
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Patent number: 9757311Abstract: The invention relates to the use of lithium silicate glass ceramics and glasses with caesium oxide content, which are suitable in particular for veneering oxide ceramic restorations and metal restorations.Type: GrantFiled: April 8, 2014Date of Patent: September 12, 2017Assignee: Ivoclar Vivadent AGInventors: Markus Rampf, Marc Dittmer, Wolfram Höland, Urs Bolle, Marcel Schweiger, Volker Rheinberger, Christian Ritzberger
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Patent number: 9751804Abstract: Hydrophobic aggregates for use in refractory castables and gunning mixtures and methods of their preparation. The aggregates here are formed by crushing insulating fire brick and coating the resulting particles with a hydrophobic component. The hydrophobic component may be a polydimethylsiloxane having a terminal silanol group. As a result of the coating process, the coated aggregate has very low levels of alkalis. The aggregates may be used to form refractory castables that do not undergo substantial alkaline hydrolysis due to the reduced levels of alkalis. The castables made from these aggregates display superior physical properties, including lower water content, lower permanent linear change, high strength, and superior thermal conductivity/insulation properties, while at the same time possessing lower density and requiring less water to be used during castable formation. These improved properties also are observed in gunning mixtures formed from these aggregates.Type: GrantFiled: August 26, 2016Date of Patent: September 5, 2017Assignee: BNZ Materials, Inc.Inventors: Kenneth J. Moody, Bryan K. Doerr
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Patent number: 9751808Abstract: Disclosed is a method for fabricating a ceramic material from a preceramic polymer material. The method includes providing a preceramic polymer material that has a preceramic polymer and an electromagnetic radiation-responsive component. The electromagnetic radiation-responsive component is selected from boron-containing compounds, cobalt, titanium, zirconium, hafnium, tantalum, tungsten, rhenium, nitrides of aluminum, nitrides of titanium, nitrides of zirconium, nitrides of hafnium, nitrides of tantalum, nitrides of tungsten, nitrides of rhenium, carbides of aluminum, carbides of titanium, carbides of zirconium, carbides of hafnium, carbides of tantalum, carbides of tungsten, carbides of rhenium and combinations thereof. An electromagnetic radiation is applied to the preceramic polymer material. The electromagnetic radiation interacts with the electromagnetic radiation-responsive component to generate heat that converts the preceramic polymer to a ceramic material.Type: GrantFiled: September 30, 2014Date of Patent: September 5, 2017Assignee: United Technologies CorporationInventors: Imelda P. Smyth, Douglas M. Berczik
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Patent number: 9737465Abstract: The invention relates to a blank for producing a dental molded part such as an inlay, onlay, crown or bridge, and to a method for producing the blank. To be able to machine a dental molded part, in particular one having thin wall thicknesses, from the blank without difficulty, the blank is designed to consist of a glass ceramic having a density of between 30 and 60% of theoretical density, and of glass-ceramic powder particles with a particle size distribution d90?80 ?m, lithium silicate crystals being present in an amount of 10 to 90% by volume.Type: GrantFiled: April 30, 2014Date of Patent: August 22, 2017Assignee: DENTSPLY INTERNATIONAL INC.Inventors: Stefan Fecher, Heiner Hörhold, Udo Schusser, Markus Vollmann, Martin Kutzner
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Patent number: 9741493Abstract: A component body is obtained by alternately laminating and sintering a plurality of semiconductor ceramic layers formed of a SrTiO3-based grain boundary insulated semiconductor ceramic and a plurality of internal electrode layers. The average grain diameter of crystal grains is 1.0 ?m or less and a coefficient of variation representing variations in a grain diameter of the crystal grains is 30% or less. To prepare the semiconductor ceramic an Sr compound, a Ti compound and a donor compound are weighed in predetermined amounts and mixed/pulverized. A calcined powder is prepared and a dispersant is added with an acceptor compound to the calcined powder. The resulting mixture is wet-mixed and a heat-treated powder is prepared. The heat-treated powder is formed into slurry and subjected to a filter treatment. The filtered slurry is used to prepare a semiconductor ceramic.Type: GrantFiled: April 6, 2016Date of Patent: August 22, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Mitsutoshi Kawamoto
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Patent number: 9737383Abstract: To provide a zirconia sintered body having both excellent translucency and bending strength, specifically a zirconia sintered body having both translucency and strength suitable as a denture for front tooth, and a process for its production. A translucent zirconia sintered body containing more than 4.0 mol % and at most 6.5 mol % of yttria and less than 0.1 wt % of alumina, and having a relative density of at least 99.82%, a total light transmittance of at least 37% and less than 40% to light with a wavelength of 600 nm at a thickness of 1.0 mm, and a bending strength of at least 500 MPa, and a process for its production.Type: GrantFiled: December 19, 2014Date of Patent: August 22, 2017Assignee: TOSOH CORPORATIONInventors: Hiroyuki Fujisaki, Kiyotaka Kawamura
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Patent number: 9718728Abstract: In one aspect, a method for use in preparing a glass comprises: performing a first ion exchange process to replace at least a first ion in the glass with at least a second ion, the second ion being smaller than the first ion; and performing a second ion exchange process to replace at least the second ion in the glass with at least a third ion, the third ion being larger than the first ion. In another aspect, a glass is prepared at least in part by: performing a first ion exchange process to replace at least a first ion in the glass with at least a second ion, the second ion being smaller than the first ion; and performing a second ion exchange process to replace at least the second ion in the glass with at least a third ion, the third ion being larger than the first ion.Type: GrantFiled: January 20, 2016Date of Patent: August 1, 2017Assignee: International Business Machines CorporationInventors: Qiang Huang, Kenneth P. Rodbell, Asli Sahin
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Patent number: 9718696Abstract: A low temperature co-fired ceramic powder has a chemical composition of xR2O-yR?O-zM2O3-wM?O2, wherein R is Li, Na and/or K, R? is Mg, Ca, Sr, Ba, Zn and/or Cu, M is B, Al, Ga, In, Bi, Nd, Sm, and/or La, M? is Si, Ge, Sn, Ti, and/or Zr, x?0, y?0, z?20%, w?15%, and x+y+z+w=1. The preparation method comprises: weighing constituent powders according to the composition of the ceramic powder, and uniformly mixing these powders as a raw material powder; and presintering the raw material powder in a muffle furnace followed by grinding, the presintering comprising gradiently heating the raw material powder to a maximum temperature of 950° C. by first rising to 350-450° C. and staying thereat for a period, then staying at intervals of 50-100° C. for a period.Type: GrantFiled: March 10, 2016Date of Patent: August 1, 2017Assignee: SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCESInventors: Zhifu Liu, Yongxiang Li
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Patent number: 9721727Abstract: A multilayer ceramic capacitor has a laminate including dielectric layers laminated alternately with internal electrode layers of different polarities, wherein the dielectric layer contains ceramic grains having Ba, Ti, and X (wherein X represents at least one type of element selected from the group consisting of Mo, Ta, Nb, and W) and a variation in the concentration distribution of X above in the ceramic grain is within ±5%. The multilayer ceramic capacitor can offer excellent service life characteristics even when the thickness of the dielectric layer is 0.8 ?m or less, as well as excellent bias characteristics.Type: GrantFiled: November 18, 2015Date of Patent: August 1, 2017Assignee: TAIYO YUDEN CO., LTDInventors: Chie Kawamura, Tetsuo Shimura, Minoru Ryu, Koichiro Morita, Yukihiro Konishi, Yoshiki Iwazaki
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Patent number: 9714170Abstract: A filler that can suppress thermal expansion of a glass composition with a small amount thereof added and is also excellent in terms of flowability when the glass composition is melted, and a glass composition containing the filler are provided. There is also provided a process for producing a hexagonal phosphate-based compound that can be suitably used as the filler using a simple, industrially advantageous method. The filler of the present invention contains a hexagonal phosphate-based compound that has a purity of 90% or higher and is represented by the following Formula 1, the filler having a content of an ionic compound that is no greater than 1.0 wt %, KaZrb(PO4)3??(1) wherein, in Formula 1, a is a positive number of from 0.8 to 1.2 and b is a positive number satisfying a+4b=9.Type: GrantFiled: November 13, 2014Date of Patent: July 25, 2017Assignee: TOAGOSEI CO., LTD.Inventors: Miki Iida, Yasuharu Ono
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Patent number: 9708221Abstract: Provided are an inexpensive brick, etc., naturally exhibiting excellent radiation shielding effects, demonstrating high strength while being chemically stable and not including harmful substances, and also being suitable for use in facility in which devices affected by magnetic fields are installed. Manufactured are a brick, etc., for constructing a ?-shielding structure or constructing an X-ray shielding structure, in which a molding material including hematite in a ratio of at least 90% by mass is molded into a predetermined shape to obtain a molded article, and the molded article is fired, whereby the fired molded article is endowed with a bulk density of at least 2.8 g/cm3, and the fired molded article is endowed with a residual magnetization of 1.0 A·m2·g?1 or less.Type: GrantFiled: February 25, 2014Date of Patent: July 18, 2017Assignees: MITSUISHI TAIKA RENGA CO., LTD., DOWA F-TEC CO., LTD., DOWA ELECTRONICS MATERIALS CO., LTD.Inventors: Yasumichi Miyao, Toshiya Kitamura, Yasunobu Mishima
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Patent number: 9708212Abstract: The sodium-resistant joining glass (1) is substantially free of ZrO2 and is based on a SiO2—B2O3—Na2O—Al2O3 glass system. It is suitable for producing a joint of a metal and/or ceramic component with a further joining component (2, 3, 4) using the joining glass (1). Feedthrough-devices (20) using the joining glass (1) as fixing material are also disclosed.Type: GrantFiled: October 29, 2014Date of Patent: July 18, 2017Assignee: Schott AGInventor: Jens Suffner
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Patent number: 9701575Abstract: The present invention relates to a glass ceramic powder comprising i) a glass material formed from a glass mixture containing a lithium and oxygen containing compound selected from Li2O and/or Li2CO3, SiO2, K2O, La2O3, and ii) seed particles comprising Li2SiO3 crystals and/or Li2Si2O5 crystals. The present invention also relates to a method of manufacturing of said glass ceramic powder, a method for preparing compacted and sintered bodies from the glass ceramic powder and bodies obtainable by said method.Type: GrantFiled: October 17, 2014Date of Patent: July 11, 2017Assignee: HARRYSON CONSULTING GMBHInventor: Sigvald Harryson
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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: 9701588Abstract: The present invention relates to a novel process for producing ceramic materials, in particular refractory materials having a reduced relative density. In particular, the invention relates to a process for producing light, refractory materials having non-contiguous pores based on shaped and unshaped materials. These materials can be used as working lining in high-temperature applications. The process is based on the production of spherical, closed and isolated pores in the microstructure of the material. The pores having a pore diameter which can be set in a targeted manner are generated by use of polymer particles, in particular polymethacrylates, in particular polymers or copolymers prepared by means of suspension polymerization, as pore formers which can be burnt out. The polymers or copolymers are present in the form of small spheres having a defined diameter.Type: GrantFiled: February 26, 2016Date of Patent: July 11, 2017Assignee: Evonik Roehm GmbHInventors: Tadeusz Von Rymon Lipinski, Bruno Keller, Frank Beissmann, Peter Neugebauer, Ruth Kernke, Dirk Poppe
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Patent number: 9700392Abstract: Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.Type: GrantFiled: July 8, 2015Date of Patent: July 11, 2017Assignee: GC CORPORATIONInventors: Tomohiro Hoshino, Go Mashio, Tatsuya Fujimoto, Masatoshi Yoshinaga, Hayato Yokohara, Daisuke Ohta
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Patent number: 9701585Abstract: The present invention provides a product and manufacturing method for electro-optic ceramic material having the composition (A?(1-y)A?y)1-XLnxM(1-2X/5)O3 wherein 0<x<0.1; 0<y<1; A? and A? are independently, alkali metals; Ln is a lanthanide metal; and M is a transition metal. The present invention provides a product and manufacturing method for an electro-optic device that is operable at room temperature and the properties of which are tunable by an applied external electric field.Type: GrantFiled: February 6, 2014Date of Patent: July 11, 2017Assignee: Agency for Science, Technology and ResearchInventors: Santiranjan Shannigrahi, Chee Kiang Ivan Tan, Hong Fei Liu, Kui Yao
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Patent number: 9701586Abstract: A titanium compound-containing core-shell powder includes a plurality of core-shell particles, each of which includes a core body and a shell layer encapsulating said core body. The core body is electrically conductive. The shell layer includes a crystal that is selected from titanate oxides having a perovskite structure and titanate oxides having a spinel structure. The core body and the shell layer are chemically bonded to each other.Type: GrantFiled: March 9, 2016Date of Patent: July 11, 2017Assignee: Yageo CorporationInventor: Masayuki Fujimoto