Inorganic Materials Only Patents (Class 106/38.27)
  • Patent number: 10391547
    Abstract: A mold for casting a titanium-containing article includes calcium aluminate and silicon carbide, and the silicon carbide is graded in the mold such that it is in different portions of the mold in different amounts, with the highest concentration of silicon carbide being located between a bulk of the mold and a surface of the mold that opens to a mold cavity.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: August 27, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bernard Patrick Bewlay, Joan McKiever, Brian Michael Ellis, Nicholas Vincent McLasky
  • Patent number: 10359697
    Abstract: An imprinting template substrate has a protruded portion, and a protective layer on a side surface of the protruded portion, and having a contact angle higher with respect to a resist material than a contact angle of the protruded portion with respect to the resist material. Even when the template is pressed to the resist, the resist hardly adheres to the side surface of the template. An imprinting process using the present template forms a pattern on a semiconductor substrate and then a semiconductor apparatus is manufactured.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: July 23, 2019
    Assignee: Toshiba Memory Corporation
    Inventor: Nobuyoshi Sato
  • Patent number: 10207315
    Abstract: Certain exemplary embodiments can provide a composition, system, machine, device, manufacture, circuit, and/or user interface adapted for, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise, after removing a cast device from a stack-lamination-derived mold, said cast device formed from a molding composition, applying a desired shape to said cast device to form a shaped cast device, said molding composition comprising: a ceramic composition comprising silica; an cycloaliphatic epoxy binder composition, said cycloaliphatic epoxy binder composition present in said molding composition in an amount up to 30% by weight of said molding composition; a silicone composition comprising a siloxane resin, said silicone composition present in said molding composition in an amount up to 30% by weight of said molding composition; and a solvent composition adapted to dissolve said cycloaliphatic epoxy binder composition and said silicone composition.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: February 19, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Michael P. Appleby, Iain Fraser, John Paulus
  • Patent number: 10149797
    Abstract: A doll is provided. The doll includes a layer of skin formed from a first material to simulate human skin. The skin has an interior side and an exterior side. The doll also includes a chamber enclosed by the layer of skin with the interior side of the skin facing the chamber. The doll further includes a filler made of a second material, different from the first material. The filler fills the space within the chamber. The skin is formed by placing the melted first material in a first mold configured to have an inside contour resembling a human body or body part up to a certain level of the first mold and, when the melted first material solidifies, removing certain amount of the melted first material such that the remaining first material in the first mold forms the skin with a thickness in the first mold.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: December 11, 2018
    Assignee: WSM INVESTMENT LLC
    Inventor: Antonio Hernandez
  • Patent number: 9895838
    Abstract: A resin mold for nanoimprinting has a substrate, a resin layer formed upon the substrate and having a depressions and protrusions pattern on a surface, an inorganic substance layer formed of uniform thickness on at least the surface having the depressions and protrusions pattern of the resin layer, and a mold release agent layer formed of uniform thickness on at least the surface having the depressions and protrusions pattern of the inorganic substance layer. The resin of the resin layer includes constituent units derived from an epoxy group-containing unsaturated compound at a concentration of 1 to 50 percent relative to total constituent units, and the epoxy value is 7.0×10?4 to 4.0×10?2.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: February 20, 2018
    Assignee: Soken Chemical & Engineering Co., Ltd.
    Inventors: Hiroko Yamada, Takahide Mizawa
  • Patent number: 9713564
    Abstract: A doll is provided. The doll includes a layer of skin formed from a first material to simulate human skin. The skin has an interior side and an exterior side. The doll also includes a chamber enclosed by the layer of skin with the interior side of the skin facing the chamber. The doll further includes a filler made of a second material, different from the first material. The filler fills the space within the chamber. The skin is formed by placing the melted first material in a first mold configured to have an inside contour resembling a human body or body part up to a certain level of the first mold and, when the melted first material solidifies, removing certain amount of the melted first material such that the remaining first material in the first mold forms the skin with a thickness in the first mold.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 25, 2017
    Assignee: WSM Investment LLC
    Inventor: Antonio Hernandez
  • Patent number: 9475115
    Abstract: A centrifugal casting method for producing a casting of a metallic material comprises positioning a rotatable assembly comprising a plurality of gates and a plurality of cavities positioned about a sprue chamber. The plurality of gates and the plurality of cavities are positioned to receive molten metallic material from the sprue chamber in a general direction of centrifugal force. Each of the plurality of gates is coupled to one of the plurality of cavities, and at least two of the plurality of cavities are stacked. The method further comprises rotating the rotatable assembly. The method further comprises delivering a supply of molten metallic material to the sprue chamber.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: October 25, 2016
    Assignee: ATI Properties LLC
    Inventors: John W. Foltz, IV, Raul A. Martinez-Ayers, Aaron L. Fosdick
  • Patent number: 9272913
    Abstract: Methods of producing silicon carbide fibers. The method comprises reacting a continuous carbon fiber material and a silicon-containing gas in a reaction chamber at a temperature ranging from approximately 1500° C. to approximately 2000° C. A partial pressure of oxygen in the reaction chamber is maintained at less than approximately 1.01×102 Pascal to produce continuous alpha silicon carbide fibers. Continuous alpha silicon carbide fibers and articles formed from the continuous alpha silicon carbide fibers are also disclosed.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: March 1, 2016
    Assignee: ADVANCED CERAMIC FIBERS, LLC
    Inventors: John E. Garnier, George W. Griffith
  • Patent number: 9263649
    Abstract: Disclosed is a layered product for fine pattern formation and a method of manufacturing the layered product for fine pattern formation, capable of easily forming a fine pattern having a thin or no remaining film in order to form a fine pattern having a high aspect ratio on a processing object. The layered product for fine pattern formation (1) of the present invention used to form a fine pattern (220) in a processing object (200) using a first mask layer (103) includes: a mold (101) having a concavo-convex structure (101a) on a surface; and a second mask layer (102) provided on the concavo-convex structure (101a), wherein in the second mask layer (102), a distance (lcc) and a height (h) of the concavo-convex structure (101a) satisfy Formula (1) 0<lcc<1.0 h, and a distance (lcv) and the height (h) satisfy Formula (2) 0?lcv?0.05 h.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: February 16, 2016
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Jun Koike, Fujito Yamaguchi, Masatoshi Maeda, Shinji Arihisa, Masayoshi Arihisa
  • Patent number: 9022343
    Abstract: A polycrystalline silicon ingot casting mold, and method for producing same. Mold release material being obtained by blending a silicon nitride powder (A) having an average particle diameter along the short axis of 0.6 to 13 ?m with a silicon nitride powder (B) having an average particle diameter along the short axis of 0.1 to 0.3 ?m at a weight ratio of 5:5 to 9:1; coating the mold surface with the slurry; and a heating the mold at 800 to 1200° C. in an atmosphere containing oxygen.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: May 5, 2015
    Assignee: Ube Industries, Ltd.
    Inventors: Takeshi Yamao, Michio Honda, Shinsuke Jida
  • Patent number: 8973888
    Abstract: Provided are a polycrystalline silicon ingot casting mold and a method for producing a polycrystalline silicon ingot casting mold, with which high-quality silicon ingots can be obtained at high yields by minimizing sticking with the surfaces of the silicon ingot casting mold, and losses and damages that occur when solidified silicon ingot is released from the mold. The method for producing a polycrystalline silicon ingot casting mold having a release layer, including: forming a slurry by mixing a silicon nitride powder with water, coating the surface of the mold with the slurry, and heating the mold at 400 to 800° C. in an atmosphere containing oxygen, after coating the slurry.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 10, 2015
    Assignee: Ube Industries, Ltd.
    Inventors: Takeshi Yamao, Takayuki Fujii, Shinsuke Jida
  • Patent number: 8968455
    Abstract: A new investment material for the pressing loss wax technique for dental glass ceramics. It has been found that the addition of fillers to a magnesium phosphate investment, specifically metal oxides with elevated melting points ranging from 1800 to 2800° C., provides a protection barrier against the reaction between the high alkaline content of the glass ceramic and the investment during the pressing process in the range of 800 to 950° C. Specifically, it has been found that the addition of aluminum oxide of about 2 to 5 percent of the total dry mix in combination with any of the zirconium oxide, yttrium stabilized zirconium, titanium dioxide and boron nitride in proportions of about 3.5%, enhances the barrier against a surface reaction and improves the thermal properties of the investment.
    Type: Grant
    Filed: October 13, 2012
    Date of Patent: March 3, 2015
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: Rodolfo Castillo, Robin A. Carden
  • Patent number: 8932518
    Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: January 13, 2015
    Assignee: General Electric Company
    Inventors: Bernard Patrick Bewlay, Stephen Bancheri, Michael Weimer, Joan McKiever, Brian Ellis
  • Patent number: 8864481
    Abstract: Mold for casting a polycrystalline silicon ingot, and a silicon nitride powder for a mold release material thereof, a slurry containing a silicon nitride power for a mold release layer thereof, and a mold release material for casting thereof. The present invention relates to a silicon nitride powder for a mold release material of a mold for casting a polycrystalline silicon ingot characterized in that the percentage of primary particles of granular crystals monodispersed in powders is not less than 95% in terms of the area ratio calculated by analysis of an SEM image.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 21, 2014
    Assignee: Ube Industries, Ltd.
    Inventors: Takeshi Yamao, Michio Honda, Shinsuke Jida
  • Patent number: 8858697
    Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions and methods for casting titanium-containing articles, and the titanium-containing articles so molded.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: October 14, 2014
    Assignee: General Electric Company
    Inventor: Bernard Patrick Bewlay
  • Patent number: 8845802
    Abstract: A refractory coating for producing mold coatings by application to inorganically or organically-bound molding materials in lost molds or to cores for iron and steel casting is disclosed. The refractory coating can have a proportion by weight of 0.001% or more and less than 1% of inorganic hollow bodies, which partially or fully consist of crystalline material and have a softening point of 1000° C. or higher.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 30, 2014
    Assignee: Hüttenes-Albertus Chemische Werke GmbH
    Inventors: Andreas Stefan Jattke, Thomas Linke, Klaus Seeger
  • Publication number: 20140255601
    Abstract: The invention relates to coating compositions, comprising specific clays, an aqueous carrier fluid and refractory materials in powder form, and to the use thereof for casting molds and cores, in particular those that are produced using water glass as a binder. The invention further relates to a method for producing the sizing agents and for applying same to inorganically bound casting molds and cores.
    Type: Application
    Filed: October 1, 2012
    Publication date: September 11, 2014
    Inventors: Michael Kloskowski, Peter Wachtarczyk, Carolin Wallenhorst
  • Patent number: 8813829
    Abstract: In production of a mold with the reclaimed spherical molding sand having a sphericity of 0.95 or more and mainly composed of Al2O3 together with the binder containing the acid-hardening resin and the hardening agent (I), at least one of the hardening agents (I) and (II) that is used in production of a mold from which the reclaimed molding sand is obtained contains the organic sulfonic acid, and in the hardening agent, a content of sulfuric acid is not more than 5% by weight and a content of phosphoric acid is not more than 5% by weight.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: August 26, 2014
    Assignee: Kao Corporation
    Inventors: Yoshimitsu Ina, Shigeo Nakai, Toshiki Matsuo
  • Publication number: 20140196863
    Abstract: Tubular metal articles such as pipe and cylinder liners are produced by centrifugal casting on a permanent metal mold coated by refractory glass on the active surface. A coating suspension mix is evenly distributed onto the mold to form a uniform layer of insulation on the surface of the mold. The material for the coating includes essentially a waterborne suspension mix of glass particles. The suspension is given time to dry on the surface of the mold. The glass particles dispersed in the suspension are both non-crystalline and nonporous. The glass particles in the suspension and forming the coating are not dissolved and do not chemically attract the polar water molecule or cause it to bond to the surface of glass in the suspension or to the mold active surface. Articles cast as such are smooth surfaced and require only limited machining.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 17, 2014
    Inventor: Charles Earl Bates
  • Patent number: 8778449
    Abstract: Slurry which contains a) from (50) to (80)% by weight of refractory particles having an average particle size of from (0.5) m to (150) m, b) from (5) to (35)% by weight of aluminum oxide particles having an average particle diameter of less than (300) nm and c) from (5) to (35)% by weight of water and d) a pH of from (5) to (12). Process for producing the slurry using a dispersion, and also the dispersion itself. Process for producing a casting mold, and also the casting mold itself.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: July 15, 2014
    Assignees: Evonik Degussa GmbH, Center for Abrasives and Refractories Research & Development C.A.R.R.D. GmbH
    Inventors: Christoph Tontrup, Wolfgang Lortz, Gabriele Perlet, Erich Schmidt-Kluge, Danilo Frulli
  • Patent number: 8778076
    Abstract: A foundry coating composition for molds and cores, a process for preparing coated foundry molds and cores, and coated molds and cores obtainable by the process. The foundry coating composition comprises a liquid carrier; a binder; and a particulate refractory filler. The particulate refractory filler comprises a first (relatively coarse) fraction having a particle size of d>38 ?m and a second (relatively fine) fraction having a particle size of d<38 ?m. No more than 10% of the total particulate refractory filler has a particle size of 38 ?m<d<53 ?m and no more than 50% of the second (relatively fine) fraction is constituted by calcined kaolin. The foundry coating composition is applied to molds and cores to assist in the removal of the casting from the mold and prevention of casting defects.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: July 15, 2014
    Assignee: Foseco International Limited
    Inventors: Martinus Jacobus Haanepen, Frederik Willem Von Piekartz
  • Publication number: 20140190647
    Abstract: An investment casting method involves producing a casting shell by applying a hardenable refractory material to a sacrificial pattern. The casting shell having a plurality of phosphate bonds in the hardenable refractory material, which provide increased structural integrity during casting and improved frangibility during shell removal. The casting shell may also have a plurality of gaseous pockets suspended in the refractory material, which do not degrade the structural integrity during casting and provide improved frangibility during shell removal.
    Type: Application
    Filed: January 7, 2013
    Publication date: July 10, 2014
    Applicant: WiSys Technology Foundation, Inc.
    Inventors: Daniel Scott McGuire, Eric Ernst Hellstrom
  • Patent number: 8771412
    Abstract: The present invention relates to a refractory coating for producing mold coatings by application to inorganically or organically-bound molding materials in lost molds or to cores for iron and steel casting, wherein the ready-to-use refractory coating has proportion by weight of 0.001% or more and less than 1% of inorganic hollow bodies, which partially or fully consist of crystalline material and have a softening point of 1000° C. or higher.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: July 8, 2014
    Assignee: Hüttenes-Albertus Chemische Werke GmbH
    Inventors: Andreas Stefan Jattke, Günter Thomas Linke, Klaus Seeger
  • Publication number: 20140158858
    Abstract: Provided are a polycrystalline silicon ingot casting mold and a method for producing a polycrystalline silicon ingot casting mold, with which high-quality silicon ingots can be obtained at high yields by minimizing sticking with the surfaces of the silicon ingot casting mold, and losses and damages that occur when solidified silicon ingot is released from the mold. The method for producing a polycrystalline silicon ingot casting mold having a release layer, including: forming a slurry by mixing a silicon nitride powder with water, coating the surface of the mold with the slurry, and heating the mold at 400 to 800° C. in an atmosphere containing oxygen, after coating the slurry.
    Type: Application
    Filed: June 26, 2013
    Publication date: June 12, 2014
    Inventors: Takeshi Yamao, Takayuki Fujii, Shinsuke Jida
  • Patent number: 8747538
    Abstract: A photovoltaic crucible mold release compound includes a powder mixture comprising silicon nitride powder having 1 ppm of impurities or less and silicon dioxide 1 ppm of impurities or less mixed in with the silicon nitride powder until the gray of the silicon nitride powder turns lighter in color which is from 1% silicon dioxide in weight up to 50% silicon dioxide in weight. Also included is a binder having a liquid. The powder mixture is mixed with the binder. The binder can be ethanol, water or alcohol. A photovoltaic crucible mold release compound can also include a photovoltaic crucible mold, so that the mold release compound is applied to an inside surface of the photovoltaic crucible mold to a thickness of 75 to 1500 microns.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 10, 2014
    Inventor: Chung-Hou Tony Hsiao
  • Publication number: 20130273189
    Abstract: Mold for casting a polycrystalline silicon ingot, and a silicon nitride powder for a mold release material thereof, a slurry containing a silicon nitride power for a mold release layer thereof, and a mold release material for casting thereof. The present invention relates to a silicon nitride powder for a mold release material of a mold for casting a polycrystalline silicon ingot characterized in that the percentage of primary particles of granular crystals monodispersed in powders is not less than 95% in terms of the area ratio calculated by analysis of an SEM image.
    Type: Application
    Filed: July 27, 2011
    Publication date: October 17, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Takeshi Yamao, Michio Honda, Shinsuke Jida
  • Publication number: 20130264460
    Abstract: A polycrystalline silicon ingot casting mold, and method for producing same. Mold release material being obtained by blending a silicon nitride powder (A) having an average particle diameter along the short axis of 0.6 to 13 ?m with a silicon nitride powder (B) having an average particle diameter along the short axis of 0.1 to 0.3 ?m at a weight ratio of 5:5 to 9:1; coating the mold surface with the slurry; and a heating the mold at 800 to 1200° C. in an atmosphere containing oxygen.
    Type: Application
    Filed: July 27, 2011
    Publication date: October 10, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Takeshi Yamao, Michio Honda, Shinsuke Jida
  • Publication number: 20130224066
    Abstract: The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Bernard Patrick BEWLAY, Stephen BANCHERI, Michael WEIMER, Joan McKIEVER, Brian ELLIS
  • Patent number: 8500898
    Abstract: An yttria-based slurry composition comprising yttria, an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system and a fluorine compound, which is selected from ammonium fluoride, ammonium hydrogen difluoride, sodium fluoride, potassium fluoride, sodium hydrogen difluoride and/or potassium hydrogen difluoride and a method of stabilizing an yttria-based slurry composition comprising yttria and an aqueous silica binder system or an aqueous ammonium zirconium carbonate binder system which method comprises treating the composition, preferably treating the binder system, with a fluorine compound which is selected as indicated above.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: August 6, 2013
    Assignee: Treibacher Industrie AG
    Inventors: Sigrun Raunig, Peter Janz
  • Patent number: 8408895
    Abstract: To provide a transferring mold by which fine patterns can be transferred and transcription of a large area can be coped with and a production process of the transferring mold. The transferring mold of the present invention is characterized in that the mold comprises a roll body formed approximately in a column shape, a surface layer (3) formed on the outer peripheral surface of the roll body and a fine structure layer formed on the surface layer (3) and that the surface layer (3) is composed of a material having a refractive index n of not less than 1.3 and not more than 2.0 and an extinction coefficient k of not more than 0.3 at a wavelength of 405 nm.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: April 2, 2013
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuyuki Furuya, Masaru Suzuki
  • Publication number: 20130068925
    Abstract: A photovoltaic crucible mold release compound includes a powder mixture comprising silicon nitride powder having 1 ppm of impurities or less and silicon dioxide 1 ppm of impurities or less mixed in with the silicon nitride powder until the gray of the silicon nitride powder turns lighter in color which is from 1% silicon dioxide in weight up to 50% silicon dioxide in weight. Also included is a binder having a liquid. The powder mixture is mixed with the binder. The binder can be ethanol, water or alcohol. A photovoltaic crucible mold release compound can also include a photovoltaic crucible mold, so that the mold release compound is applied to an inside surface of the photovoltaic crucible mold to a thickness of 75 to 1500 microns.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Inventor: Chung-Hou Tony Hsiao
  • Patent number: 8372769
    Abstract: Method for producing a mold for use in casting reactive metals comprising preparing a slurry of a yttria-based refractory composition and a binder, and using said slurry as a mold facecoat by applying said slurry onto a surface of a mold pattern, wherein said yttria-based refractory composition is obtainable by (a) mixing particles of a yttria-based ceramic material and a fluorine containing dopant, and (b) heating the resulting mixture to effect fluorine-doping of said yttria-based ceramic material.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 12, 2013
    Assignee: Treibacher Industrie AG
    Inventors: Peter Janz, Sigrun Tauber
  • Patent number: 8367739
    Abstract: A composition for promoting the release of bituminous materials and other adhesive materials from a substrate and methods of use thereof. More particularly, a composition comprising a silicone oil-in-water emulsion, which is stabilized by an alkoxylated polysiloxane surfactant, for use as a release agent that can be applied to a substrate, such as a truck bed, prior to use for promoting the free release of a bituminous material, such as asphalt, from the substrate.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: February 5, 2013
    Assignee: Troxler Electronic Laboratories, Inc.
    Inventors: Nael Naguib Zaki, Robert Ernest Troxler
  • Publication number: 20130014543
    Abstract: To provide a thermal sprayed coating of a jig for producing glass having favorable wear resistance and lubricity at high temperature of at least the strain point of a glass sheet. A thermal sprayed coating of a jig for producing a glass sheet, to be used for a jig for producing glass to be in contact with a glass sheet at a temperature of at least the strain point, which comprises tungsten carbide; at least one metal carbide selected from the group consisting of titanium carbide, zirconium carbide, hafnium carbide, niobium carbide, tantalum carbide, chromium carbide and molybdenum carbide; a metal containing Ni; and inevitable impurities, and a jig for producing a glass sheet comprising the thermal sprayed coating.
    Type: Application
    Filed: September 21, 2012
    Publication date: January 17, 2013
    Applicant: Asahi Glass Company, Limited
    Inventor: Asahi Glass Company, Limited
  • Patent number: 8292998
    Abstract: The invention relates to a ceramic surface in a casting tool, particularly a surface located outside the contouring region, which is exposed to a liquid or free-flowing aluminum material, wherein on at least one ceramic surface a layer is present consisting of an infiltration layer, diffused into the ceramic surface, structural parts in the form of Al2O3 and/or SiO2 and/or ZrO2 and/or TiO2 and a polymer of one or more polymerized phosphates and at least in sections enclosing the primary parts, the structural parts, and the sliding parts. Moreover, the invention relates to a parting agent and a method for preparing a layer of this type.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: October 23, 2012
    Assignees: KS Aluminium-Technologie GmbH, Gelita AG
    Inventor: Manfred Laudenklos
  • Publication number: 20120126092
    Abstract: The present invention relates to a refractory coating for producing mold coatings by application to inorganically or organically-bound molding materials in lost molds or to cores for iron and steel casting, wherein the ready-to-use refractory coating has proportion by weight of 0.001% or more and less than 1% of inorganic hollow bodies, which partially or fully consist of crystalline material and have a softening point of 1000° C. or higher.
    Type: Application
    Filed: April 21, 2010
    Publication date: May 24, 2012
    Applicant: HUTTENES-ALBERTUS CHEMISCHE WERKE GmbH
    Inventor: Andreas JATTKE
  • Patent number: 8147605
    Abstract: A coating system for a mould for the directional solidification of silicon. The coating is applied as an aqueous slurry of silicon nitride particle, carbon black and microsilica.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: April 3, 2012
    Assignee: Elkem Solar AS
    Inventors: Ragnar Tronstad, Erik Enebakk
  • Patent number: 8088208
    Abstract: The present invention relates to wash compositions which comprise a solvent component and a solids component wherein the solvent component comprises as main component water or one or more alcohols, and the solids component comprises as main component a mixture of metakaolinite and pyrophyllite, which can be applied onto casting molds, casting molds comprising these wash compositions and the use thereof, in particular in centrifugal casting processes and large-scale casting processes.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 3, 2012
    Assignee: Ashland-Sudchemie-Kernfest GmbH
    Inventors: Reinhard Stötzel, Herbert Pitamitz, Gernot Lederer
  • Patent number: 8029711
    Abstract: A method for producing a core sand and/or mold sand for foundry purposes mixes a granular mineral mold base material with an additive and an inorganic binder. An inorganic swelling additive having a swelling index of at least 9, in other words a higher swelling index that that achieved for coal, is used as an additive. Alternatively, it is also possible to work with an inorganic additive, for example with macro-crystalline graphite, whereby the finished mixture of the mold base material, the additive, and the binder is compacted to a density increase of at least 20 g/dm3.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: October 4, 2011
    Assignee: S & B Industrial Minerals GmbH
    Inventors: Cornelis Grefhorst, Spyridon Tzintzos
  • Publication number: 20110232857
    Abstract: An investment casting method involves producing a casting shell by applying a hardenable slurry to a sacrificial pattern. To hasten the hardening of the slurry into the shell, a stucco coat including a desiccant material having a high surface area is subsequently applied to the slurry.
    Type: Application
    Filed: September 28, 2010
    Publication date: September 29, 2011
    Inventors: Daniel S. McGuire, Eric E. Hellstrom
  • Publication number: 20100237224
    Abstract: The invention concerns a metal, iron-containing permanent mold, in particular a permanent mold made of steel, which can be subjected to a liquid or flowable aluminum material, and in which a coating for protecting the permanent mold and for achieving an optimal casting result can be produced using a mold release agent. The invention additionally concerns a mold release agent for producing such a coating, and a method for producing such a coating.
    Type: Application
    Filed: September 7, 2006
    Publication date: September 23, 2010
    Applicant: KS ALUMINIUM-TECHNOLOGIE AG
    Inventor: Manfred Laudenklos
  • Publication number: 20100133415
    Abstract: A coating system for a mould for the directional solidification of silicon. The coating is applied as an aqueous slurry of silicon nitride particle, carbon black and microsilica.
    Type: Application
    Filed: March 17, 2008
    Publication date: June 3, 2010
    Applicant: ELKEM SOLAR AS
    Inventors: Ragnar Tronstad, Erik Enebakk
  • Patent number: 7717994
    Abstract: The invention relates to coating material comprising a water-soluble salt as a filler. Such materials are especially suitable as core washes for salt cores for using in foundry technology.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: May 18, 2010
    Assignee: Ashland-Sudchemie-Kernfest GmbH
    Inventors: Herbert Pitamitz, Gernot Lederer
  • Patent number: 7687007
    Abstract: Method for manufacturing a mold tool (1), devised for forming a structured nanoscale pattern on an object (24) and having a layer (16) which is anti-adhesive with regard to the object (24). A stamp blank (2) is provided with a structured pattern (4) on a surface (8). The patterned surface (8) is coated with a layer (6) of a metal, which has a stable oxidation number and can form a mechanically stable oxide film. The metal layer (6) is oxidized for forming of an oxide film (10). The oxide film (10) is exposed to a reagent comprising molecule chains (18), each of which has a linkage group (20) which bonds to the oxide film (10) by chemical bonding, wherein the molecule chains (18) either at the outset comprise at least a group (22) comprising fluorine, or in a subsequent step is provided with at least one such group (22).
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: March 30, 2010
    Assignee: Obducat AB
    Inventors: Torbjörn Ling, Lars Montelius, Matthias Keil, Marc Beck
  • Patent number: 7615095
    Abstract: A powder product for the protection of centrifugal casting molds for cast iron pipes includes an inoculating metal alloy and possibly mineral powders, and a strongly reducing metal that is volatile at the temperature of the liquid cast iron. The use of products according to the invention prevents accumulation of dirt on molds and improves the surface condition of the cast iron pipes.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: November 10, 2009
    Assignee: Pechiney Electrometallurgie
    Inventor: Thomas Margaria
  • Patent number: 7575042
    Abstract: A method for forming an article is described. The method includes the step of applying a precursor material to at least one surface of a mold structure for casting the article, and curing the applied precursor material. The precursor material includes facecoat-forming constituents which can be curably converted into a facecoat; and a protective coating-former for the article being cast. Molten material is then introduced into the mold structure, so as to come in contact with the facecoat formed from the cured precursor material. The molten material is cooled, to form the article. The cured precursor material, which is in contact with a surface of the cast article, is then reacted with the article, to form the protective coating on the surface of the article. Related mold structures are also described.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: August 18, 2009
    Assignee: General Electric Company
    Inventors: Bernard Patrick Bewlay, Melvin Robert Jackson
  • Patent number: 7520742
    Abstract: A pillar with a high aspect ratio is transferred by a nanoprinting method. In order to form a fine structure on a substrate, a nanoprinting apparatus heats and presses the substrate and a mold with a fine concave-convex pattern formed thereon, the mold having a mechanism for transferring and applying a mold-releasing agent. A method for transferring a fine structure using the aforementioned nanoprinting apparatus.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: April 21, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Shigehisa Motowaki, Akihiro Miyauchi, Masahiko Ogino, Kosuke Kuwabara
  • Patent number: 7488170
    Abstract: A molding die for forming an optical element, comprises a base body; a film layer formed on the base body and having a thickness of 0.01 to 500 ?m; and a transferring surface formed on a surface of the film layer by a predetermined process and having a surface roughness Ra of 0.1 to 50 nm. The film layer is formed by an amorphous alloy having a supercooled liquid state containing 20 mol % or more of at least one atom of Pt, Ir, Au, Pd, Ru, Rh, Fe, Co, Ni, Zr, Al, Ti, Cu, W, Mo, Cr, B, and P and the transferring surface maintains the surface roughness after the transferring surface is heated to a temperature which is higher 50° C. higher than the glass transition temperature (Tg) of the optical element formed by the transferring surface and lower than the glass transition temperature of the amorphous alloy.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: February 10, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Seiji Yuasa, Shigeru Hosoe, Yuichi Atarashi
  • Publication number: 20090025606
    Abstract: A method for producing a core sand and/or mold sand for foundry purposes mixes a granular mineral mold base material with an additive and an inorganic binder. An inorganic swelling additive having a swelling index of at least 9, in other words a higher swelling index that that achieved for coal, is used as an additive. Alternatively, it is also possible to work with an inorganic additive, for example with macro-crystalline graphite, whereby the finished mixture of the mold base material, the additive, and the binder is compacted to a density increase of at least 20 g/dm3.
    Type: Application
    Filed: June 10, 2008
    Publication date: January 29, 2009
    Inventors: Cornelis Grefhorst, Spyridon Tzintzos
  • Patent number: RE42511
    Abstract: Bonded aggregate compositions such as concrete, concrete repair products, high temperature refractories, high temperature insulation and fire resistant insulation are made from an aqueous solution of phosphoric acid and a separate, storable dry mixture of suitable aggregate, monocalcium phosphate, and calcium in the form of calcium aluminate cement or calcium oxide. The proportion of wet to dry constituents is variable so as to select the working time and strength of the aggregate composition, typically on the order of ten to fifteen minutes. The mixture of the preferred dry constituents, and the binder to be mixed with the aggregate to yield the preferred dry mixture, are also disclosed.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: July 5, 2011
    Assignee: Stellar Materials Incorporated
    Inventors: Jean Tremblay, David Mintz, Neil Mintz