Fusing Or Melting Inorganic Material Patents (Class 264/332)
  • Publication number: 20110027159
    Abstract: An application method of silicon powder and raw material silicon brick with good filling property in a mono-crystal or a multi-crystal furnace involves pressing silicon powder having a particle size of 0.1 to 100 micrometers into silicon brick having weighing 0.2 to 2,000,000 grams by cold or hot isostatic pressing, then charging it into a mono-crystal or multi-crystal furnace. The pressure range of cold isostatic pressing is 10 MPa to 800 MPa. The pressure range of hot isostatic pressing is 10 Mpa to 800 Mpa. The temperature range for the method is 30° C. to 1,400° C.; The raw material silicon brick is used as the original raw material of silicon crystal growth in the production of solar cells or semiconductor.
    Type: Application
    Filed: June 22, 2009
    Publication date: February 3, 2011
    Inventors: Tao Zhang, Yuepeng Wan, Dejing Zhong
  • Patent number: 7879284
    Abstract: A method of making a cubic halide scintillator material includes pressing a powder mixture of cubic halide and at least one activator under conditions of pressure, temperature, residence time and particle size effective to provide a polycrystalline sintered cubic halide scintillator having a pulse height resolution of from about 7% to about 20%. The conditions include a temperature ranging from about ambient temperature up to about 90% of the melting point of the cubic halide, a pressure of from about 30,000 psi to about 200,000 psi, a pressing residence time of from about 5 minutes to about 120 minutes and an average cubic halide particle size of from about 60 micrometers to about 275 micrometers.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: February 1, 2011
    Assignee: Momentive Performance Materials Inc.
    Inventors: Sergio Paulo Martins Loureiro, Venkat Subramaniam Venkataramani, Lucas Clarke, Kevin P. McEvoy, Carl Joshua Vess, Thomas McNulty, Steven Jude Duclos, Adrian Ivan, Patricia A. Hubbard
  • Publication number: 20100323206
    Abstract: A film composed of a metal or a semimetal is formed on a surface of a soft magnetic powder including iron and oxygen (in step S102). In this case, a silicon-containing film is desirably formed on a surface of the film. Next, compaction is performed on the soft magnetic powder, so that a green compact is obtained (in step S103). Since the film is a metal film or a semimetal film having a high ductility, the density of the green compact produced by the compaction can be higher, and generation of damage, such as cracks or the like, can be prevented in the film. The effects can be also obtained in a case of formation of the silicon-containing film. Next, the green compact is subjected to heating, so that a surface and an interface of the soft magnetic powder of the green compact are oxidized, so that an insulation film is formed (in step S104). Generation of eddy current loss can be prevented by the oxide film. As a result, productivity and magnetic properties can be improved.
    Type: Application
    Filed: January 8, 2009
    Publication date: December 23, 2010
    Inventors: Shingo Soma, Kazuhito Hiraga, Yoshiki Hirano
  • Patent number: 7845059
    Abstract: An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: December 7, 2010
    Assignee: Smith International, Inc.
    Inventors: Gregory T. Lockwood, Thomas W. Oldham, Anthony Griffo, Madapusi K. Keshavan, David A. Conroy
  • Publication number: 20100234966
    Abstract: Bone repair or augmentation devices comprising a porous body (2) comprising pores (4), the porous body comprising a portion with a reinforcing agent within the pores of that portion of the porous body (8). Methods of making bone augmentation or repair devices are also provided, the devices having a perimeter and an internal region, the method comprising: (a) mixing a biodegradable reinforcing agent with a biomaterial selected from the group comprising ceramic materials and bioactive glasses to form a mixture; (b) heating the mixture to above the softening point of the reinforcing agent; (c) moulding the mixture around at least a portion of the internal region.
    Type: Application
    Filed: May 24, 2007
    Publication date: September 16, 2010
    Applicant: Orthogem Limited
    Inventor: Wei Jen Lo
  • Publication number: 20100193989
    Abstract: Methods are provided for casting one or more of a semi-conductor, an oxide, and an intermetallic material. With such methods, a cast body of a geometrically ordered multi-crystalline form of the one or more of a semiconductor, an oxide, and an intermetallic material may be formed that is free or substantially free of radially-distributed impurities and defects and having at least two dimensions that are each at least about 10 cm.
    Type: Application
    Filed: July 23, 2008
    Publication date: August 5, 2010
    Applicant: BP Corporation North America Inc.
    Inventor: Nathan G. Stoddard
  • Publication number: 20100167909
    Abstract: A hot axial pressing method for sintering a ceramic powder, particularly doped Gd2O2S, comprise the step of placing a first porous body (7), the ceramic powder (9) and a second porous body (7) into a mould shell (5) supported by a support (13, 14). The ceramic powder (9) is located between the porous bodies (7). Gaseous components are evacuated from the ceramic powder (9) up to an ambient pressure of less than 0.8 bar. The porous body (7) and the ceramic powder (9) are heated to a maximum temperature of at least 900° C. and are applied to a pressure up to a maximum pressure of at least 75 Mpa. According to the invention the variation in time of the heating step and the variation in time of the pressure applying step is adjusted to each other such that the mould shell 5 is held by the porous bodies (7) and/or the ceramic powder (9) in a state where the mould shell (5) and the support (13, 14) are disconnected with respect to each other.
    Type: Application
    Filed: December 19, 2007
    Publication date: July 1, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.
    Inventors: Guenter ZEITLER, Herbert SCHREINEMACHER, Cornelis R. RONDA
  • Publication number: 20100089518
    Abstract: The invention concerns a method for producing a ceramic filter body (1) for filtering an exhaust gas stream (2) of a diesel engine. The filter body (1) has planar and porous filter sections (3) that are designed to be passed by the exhaust gas flow (2) in a direction transverse to the face of the filter sections (3). A planar permeable fiber web (4, 4?), in particular of filter paper, is first impregnated with finely ground ceramic material (6) only across sections under formation of a non-impregnated section (12). The only partially ceramic-impregnated fiber web (4, 4?) is subsequently brought into the shape of a blank of the filter body (1) in such a way that the impregnated areas of the fiber web (4, 4?) assume the shape of the filter body (1).
    Type: Application
    Filed: November 26, 2007
    Publication date: April 15, 2010
    Applicant: MANN+HUMMEL GMBH
    Inventors: Jochen Linhart, Andreas Franz
  • Publication number: 20100067165
    Abstract: An electrostatic chuck includes a ceramic member containing yttrium oxide as a main component, containing cerium element and obtained by firing under a nonoxidizing atmosphere. The electrostatic chuck that has high corrosion resistant characteristics and includes a ceramic member having a low volume resistivity with a strong attracting force that utilize the Johnsen-Rahbeck force can be obtained.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 18, 2010
    Applicant: Toto Ltd.
    Inventors: Masami Ando, Takayuki Ide, Hiromi Arimitsu
  • Publication number: 20100035037
    Abstract: The present invention provides a fused product comprising LTM perovskite, L designating lanthanum, T being an element selected from strontium, calcium, magnesium, barium, yttrium, ytterbium, cerium, and mixtures of these elements, and X designating manganese.
    Type: Application
    Filed: October 24, 2007
    Publication date: February 11, 2010
    Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN
    Inventors: Samuel Marlin, Caroline Levy
  • Publication number: 20100009163
    Abstract: A method for producing a body of metal-ceramic composites, including the following steps of a) Producing a ceramic preform by sintering using a starting powder containing ceramic particles at an aspect ratio of 1-10, in such a way that the obtained preform has a porous structure with pore diameters of 0.5-10 ?m and an overall porosity of 15-60% (sintering step), and b) Introducing molten metal of a pure metal or an alloy into the thus produced ceramic preform having a porous structure (infiltration step).
    Type: Application
    Filed: September 11, 2007
    Publication date: January 14, 2010
    Inventors: Gert Lindemann, Matthias Leonhardt
  • Publication number: 20090121374
    Abstract: A method of manufacturing a crystal oriented ceramics is disclosed. The method comprises preparing step, mixing step, shaping step and sintering method. At least one of anisotropically shaped powder, used as raw material, and a compact, formed by shaping step, is selected to have an orientation degree of 80% or more with a full width at half maximum (FWHM) of 15° or less according to a rocking curve method. A microscopic powder, having an average grain diameter one-third or less that of anisotropically shaped powder, is prepared for mixing therewith to prepare raw material mixture. The raw material mixture is shaped into the compact so as to allow oriented planes of anisotropically shaped powder to be oriented in a nearly identical direction. In a sintering step, anisotropically shaped powder and microscopic powder are sintered with each other to obtain the crystal oriented ceramics.
    Type: Application
    Filed: October 29, 2008
    Publication date: May 14, 2009
    Applicant: DENSO CORPORATION
    Inventors: Daisuke Shibata, Masaya Nakamura, Hideki Kimura, Toshiatsu Nagaya, Hirotaka Yamaguchi
  • Publication number: 20090121199
    Abstract: A sputtering target which is formed of a sintered body including an oxide main components of which are In and Sm. A sputtering target in which a sintered body of an oxide including In and Sm as main components is doped with at least one element with an atomic valency of positive tetravalency or higher in an amount of 20 at. % or less relative to the total sum of all cation elements.
    Type: Application
    Filed: June 21, 2006
    Publication date: May 14, 2009
    Inventors: Kazuyoshi Inoue, Nobou Tanaka, Shigekazu Tomai, Masato Matsubara, Akira Kaijo, Koki Yano, Tokie Tanaka
  • Publication number: 20090047562
    Abstract: The method of the present invention for producing a solid electrolyte sheet for a solid oxide fuel cells is characterized in comprising steps of obtaining a large-sized thin zirconia green sheet by molding and drying a slurry containing zirconia particles, a binder, a plasticizer and a dispersion medium; pressing the zirconia green sheet in the thickness direction with a pressure of not less than 10 MPa and not more than 40 MPa; firing the pressed zirconia green sheet at 1200 to 1500° C.; and controlling a time period when a temperature is within the range of from 500° C. to 200° C. to not less than 100 minutes and not more than 400 minutes when cooling the sheet after firing.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 19, 2009
    Inventors: Kazuo Hata, Norikazu Aikawa, Masatoshi Shimomura
  • Publication number: 20090019685
    Abstract: A CMC sandwich used to fabricate CMC structures includes facesheets bonded to a core reinforced with a ceramic truss comprising an array of CMC pins. The binder matrix in the ends of the pins is removed, leaving exposed, flexible ceramic fibers. The exposed ceramic fibers are bent so as to extend parallel to the facesheets, and are bonded to one or more plies of the facesheets. The binder matrix in the ends of the ceramic pins may be removed by mechanical or chemical processes.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 22, 2009
    Inventors: William P. Keith, Buddhadev Chakrabarti, Leanne Lehman
  • Publication number: 20090020916
    Abstract: A composite ceramic including a first phase of ceramic material and a second phase of ceramic material, the first and second phases forming three dimensional interconnected networks of each phase and having a nano-scaled grain size. The composite ceramic is produced in a method which utilizes rapid solidification at cooling rates of at least ˜104° K/sec to produce a metastable material formed by a solid solution of a two immiscible ceramic material phases, and which also utilizes relatively high pressure/low temperature consolidation to complete densification of the metastable material, while simultaneously generating a composite structure with nano-scale grain dimensions through a controlled phase transformation.
    Type: Application
    Filed: September 12, 2008
    Publication date: January 22, 2009
    Inventors: Zwi H. Kalman, Bernard H. Kear, William E. Mayo, Ganesh Skandan
  • Publication number: 20080197538
    Abstract: Various embodiments of the invention relate to a method for making an article of jewelry, the method may comprise, but is not limited to, mixing zirconia and a binder to form a mixture, heating the mixture, applying a pressure to the mixture to place the mixture in a mold to form a molded body, and applying heat to the molded body in a controlled atmosphere to at least partially remove the binder from the molded body. The method may further comprise forming at least one hole extending completely through the molded body, the at least one hole for inserting at least one stone setting or a housing for the stone setting.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 21, 2008
    Inventor: Glenn Miller
  • Publication number: 20080116614
    Abstract: A method of forming a ceramic matrix composite (CMC) article (30) or a composite article (60) that minimizes the risk of delaminations while simultaneously maintaining a desired degree of porosity in the material. A pressure P applied against a surface of the article during a sintering process is controlled to be high enough to resist a separation force between the plies (66) of the CMC material (62) caused by anisotropic shrinkage of the material and/or to resist a separation force caused by differential shrinkage between the CMC material and an adjoined monolithic ceramic material (64). The pressure is also controlled to be low enough to avoid undue consolidation of the materials and to provide a desired degree of porosity in the sintered article. The pressure may be applied by delta-alpha tooling, and it may be varied verses the time of the sintering heating and/or across the article surface.
    Type: Application
    Filed: July 25, 2005
    Publication date: May 22, 2008
    Applicant: SIEMENS POWER GENERATION, INC.
    Inventors: Jay A. Morrison, Jay E. Lane
  • Patent number: 7300617
    Abstract: Fusion cast indium zinc oxide articles and methods of manufacturing fusion cast indium zinc articles are disclosed. The fusion cast indium zinc articles can be used as sputtering targets for forming transparent conductive films.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: November 27, 2007
    Inventor: David Gerling
  • Patent number: 7273581
    Abstract: The present invention relates to an improved process for in-situ preparation of alumina-(Ti,Zr) borides composite. The present invention particularly relates to fast and in-situ process for synthesis and consolidation of Al2O3—Zr/Ti B2 composites of approximate-95% density with controlled grain-growth in the range of less than or the order of 5 micrometer or less grain size using a dynamic Self propagating high temperature synthesis (SHS) process.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: September 25, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suman Kumari Mishra, Vladimir Andreevich Shcherbakov
  • Patent number: 7217386
    Abstract: High-density composites of alumina and titania with nano-sized grains are prepared from aluminum titanate without the need to use nano-sized powder as a starting material. The preparation is achieved by high-energy ball milling of the aluminum titanate followed by sintering at elevated temperature and pressure. The aluminum titanate can be prepared from micron-sized alumina and titania particles through plasma jet processing.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: May 15, 2007
    Assignee: The Regents of the University of California
    Inventors: Julin Wan, Amiya K. Mukherjee
  • Patent number: 7168267
    Abstract: Methods of making amorphous material and ceramic materials. Embodiments of the invention can be used to make abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: January 30, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Ahmet Celikkaya, Thomas J. Anderson
  • Patent number: 7141309
    Abstract: A high thermal conductive material includes substantially silicon carbide and metal silicon, and preferably is formed by impregnating the space between the bonded silicon carbide crystals with the metal silicon. The production process comprises adding an organic binder and a dispersant or a binder having a dispersing effect to a silicon carbide powder to obtain a mixture, forming the mixture by cast forming or pressure forming to obtain a formed product, treating the formed product with heat at 2,100–2,500° C. for 1–5 hours to obtain a base material, impregnating the base material with an organic resin, treating the base material with heat, and impregnating the base material with metal silicon at 1,450–1,800° C. under reduced pressure.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: November 28, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshiharu Kinoshita, Tsuneo Komiyama
  • Patent number: 7077991
    Abstract: Densified composites of silicon nitride, silicon carbide, and boron nitride that exhibit high creep resistance are obtained by sintering a mixture of amorphous powders of silicon nitride, silicon carbide, and boron nitride in the presence of an electric field under high pressure. The grain size in the resulting composite is less than 100 nanometers for all components of the composite, and the composite exhibits high creep resistance.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: July 18, 2006
    Assignee: The Regents of the University of California
    Inventors: Julin Wan, Amiya K. Mukherjee, Matthew J. Gasch
  • Patent number: 7045203
    Abstract: A fibrous reinforcement including a fibrous support treated throughout or covered at least partially on one of its surfaces with a compound containing: i) one or more thermosetting prepolymers having a softening temperature of 150° C. or lower and/or one or more thermoplastic polymers having a glass transition temperature lower than 300° C.; and ii) one or more inorganic phosphorus compounds. The treatment ratio of the fibrous support with the inorganic phosphorus compound(s) falls within the range of 2%–20% by weight. The fibrous reinforcement is suitable for use as a fireproofing agent.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: May 16, 2006
    Assignee: HEXCEL Reinforcements
    Inventor: Philippe D. Christou
  • Patent number: 7029613
    Abstract: Densified composites of silicon nitride and silicon carbide that exhibit high creep resistance are obtained by mechanically activating a mixture of amorphous powders of silicon nitride and silicon carbide and sintering the mechanically activated mixture in the presence of an electric field under high pressure. The grain size in the resulting composite is less than 100 nanometers for all components of the composite, and the composite exhibits high creep resistance.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: April 18, 2006
    Assignee: The Regents of the University of California
    Inventors: Julin Wan, Matthew J. Gasch, Amiya K. Mukherjee
  • Patent number: 7025923
    Abstract: A thin-walled polymeric component that may have a selected complex shape, and a method of forming the component. The method includes heating a portion of a polymeric film to a selected malleable temperature, and forming a protrusion in the heated portion while it is malleable. The protrusion defines a protrusion having a first shape. The method also includes positioning a forming tool in the protrusion's interior and drawing a partial vacuum from within the protrusion so as to exert a force on the protrusion and move the protrusion's sidewalls inwardly into engagement with the forming tool. As the partial vacuum is drawn, the protrusion moves to a second shape that may be different than the first shape and that closely conforms to the selected shape of the forming tool. The protrusion is cooled below the malleable temperature and the forming tool is then removed.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: April 11, 2006
    Assignee: Vision Sciences, Inc.
    Inventors: E. Paul Harhen, James M. Goddard
  • Patent number: 7011689
    Abstract: A process for producing fused alumina-zirconia grits includes mixing raw materials suitable to produce grits with the following chemical composition, in % by weight: ZrO2+HfO2: 10–60%, Al2O3: 38–90%, SiO2: <0.8%, and Impurities: <1.2%. The process also includes adding carbon and aluminum metal to the mixture of raw materials to obtain a charged batch containing, in % by weight,: Carbon: 0.4–1% Aluminum metal: 0.5–2.5%. The process further includes melting the charged batch in an electric arc furnace with a voltage of 175–205 V and a delivered specific electrical energy of 2.5 to 4 kWh per kg of charge.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: March 14, 2006
    Assignee: Societe Europeenne des Produits Refractaires
    Inventors: Bruno Pascal Albert Aleonard, Alain Paul Bernard Zanoli
  • Patent number: 6869916
    Abstract: The invention relates to a high-temperature superconductor component with a particular cross-sectional area, which has a current-carrying section, the current-carrying section being in contact with a safety conductor in such a way that the critical current flowing on transition of the superconductor to normal conduction can be taken up without damage by the safety conductor in at least 1 second and rerouted, as well as a process for its production.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: March 22, 2005
    Assignee: Nexans Superductors GmbH
    Inventors: Stephan Gauss, Joachim Bock, Johannes Holzem, Guenter Brommer, Markus Grom, Werner Horst
  • Publication number: 20040195736
    Abstract: The invention relates to a process for producing a molding, characterized in that a silicatic solid is mixed with a solution comprising a first silicatic binder and the mixture is then press-molded, and the compression molding is then post-treated with a solution comprising a second silicatic binder, and to silicatic moldings obtainable by this process, and also to their use as construction material, insulator material, gasket material or fire-resistant material.
    Type: Application
    Filed: March 30, 2004
    Publication date: October 7, 2004
    Inventors: Dietrich Pantke, Peter-Nikolaus Schmitz, Hartmut Melzer
  • Patent number: 6797094
    Abstract: The present invention relates to a process for the production of a braking band for a brake disk with venting passages and to a braking band which can be produced by the process. The process comprises the following steps: molding a core (200) of the braking band in a suitable mold (1), molding two covers (8) onto the core in a further suitable mold (101) so as to form a semi-finished product having a “sandwich” structure, firing the semi-finished product so as to produce a predetermined porosity of the covers, firing the semi-finished product further, in the presence of silicon, at a temperature such as substantially to bring about fusion of the silicon and its infiltration into the covers.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: September 28, 2004
    Assignee: Freni Brembo S.p.A.
    Inventors: Giovanni Paolo Pacchiana, Ralf Siegfried Goller
  • Publication number: 20040183232
    Abstract: A high thermal conductive material includes substantially silicon carbide and metal silicon, and preferably is formed by impregnating the space between the bonded silicon carbide crystals with the metal silicon. The production process comprises adding an organic binder and a dispersant or a binder having a dispersing effect to a silicon carbide powder to obtain a mixture, forming the mixture by cast forming or pressure forming to obtain a formed product, treating the formed product with heat at 2,100-2,500° C. for 1-5 hours to obtain a base material, impregnating the base material with an organic resin, treating the base material with heat, and impregnating the base material with metal silicon at 1,450-1,800° C. under reduced pressure.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 23, 2004
    Applicants: NGK Insulators, Ltd., NGK Adrec Co., Ltd.
    Inventors: Toshiharu Kinoshita, Tsuneo Komiyama
  • Publication number: 20040148967
    Abstract: Method for making ceramic particles. Embodiments of ceramic particles made according to the present invention can be are particularly useful as abrasive particles.
    Type: Application
    Filed: February 5, 2003
    Publication date: August 5, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Ahmet Celikkaya, Thomas J. Anderson
  • Patent number: 6673449
    Abstract: A method of making heat engine components, such as rocket nozzle throats, includes forming a body having at least one surface, wherein the body is made of a refractory metal, and compressing a ceramic powder between a die and the at least one surface of the body, with sufficient heat and pressure to densify and thus form a solid ceramic coating on the at least one surface of the body. Nozzle throats made according to the invention have bodies made of refractory metals, such as tantalum, and ceramic coatings on the inner surfaces of the annular bodies, wherein the ceramic coatings are made of ceramic materials such as tantalum carbide.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: January 6, 2004
    Assignee: Lockheed Corporation
    Inventors: Salvatore Thomas Bruno, Christopher Anthony Koch, Yazdan Paul Mantilla, Sanjay B. Prasad, Jerome Paul Wittenauer, Deborah Lynn Yaney, Joseph Zegarski
  • Patent number: 6669749
    Abstract: Fused abrasive particles comprising eutectic colonies. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: December 30, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Ahmet Celikkaya, Donna W. Bange
  • Patent number: 6670021
    Abstract: 12A high temperature gas turbine component includes an inner core made of a monolithic ceramic material embedded within an outer CMC shell. The inner core may be formed with a through hole, blind hole, wear pads and the like. A method of making the bushing includes the steps of a) forming an inner core of silicon nitride or silicon carbide; and b) applying a ceramic matrix composite material over substantially all of the inner core.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: December 30, 2003
    Assignee: General Electric Company
    Inventors: Mark Stewart Schroder, Paul Stephen DiMascio, Randall Richard Good
  • Patent number: 6666996
    Abstract: In a process for producing marl slags and marl slag cements or mixed components for mixed cements from marl having a basicity CaO/SiO2 of <2.0, it is provided that in a first process step argillaceous marl or a mixture of marl and clay having a basicity of <2.0 is dried, preheated and calcined and that, after this, the obtained product in a second process step is melted in a separate melting furnace at higher temperatures than applied in the first process step and is granulated from the melt.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: December 23, 2003
    Assignee: Tribovent Verfahrensentwicklung, GmbH
    Inventor: Alfred Edlinger
  • Publication number: 20030218271
    Abstract: Zr(1−x)XxW2O8 in which x represents a substituent element for zirconium Zr, and 0≦x<<1, having negative thermal expansion coefficient synthesized previously is heated and melted, or a starting material formed by mixing 2 mols of tungsten trioxide WO3 and 1 mol of the sum of zirconium oxide ZrO2 and a substituent element X in accordance with a substitution amount x at a stoichiometrical ratio and then quenching the same by being placed in a casting mold of an arbitrary shape and annealing the obtained castings by being heated at 120 to 500° C., whereby negative-thermal-expansion ceramics can be molded to arbitrary size and shape without press molding the starting powder and with no formation of voids and crackings in the inside.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 27, 2003
    Applicant: Moritex Corporation
    Inventors: Yuhkoh Morito, Kouji Takahashi, Takuya Hashimoto
  • Patent number: 6607570
    Abstract: Fused abrasive particles comprising eutectic material. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 19, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Ahmet Celikkaya, Donna W. Bange
  • Patent number: 6596041
    Abstract: Fused abrasive particles comprising eutectic material comprising Al2O3—MgO-REO eutectic. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: July 22, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Anatoly Z. Rosenflanz
  • Patent number: 6592640
    Abstract: Fused abrasive particles comprising eutectic material. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 15, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Ahmet Celikkaya, Donna W. Bange
  • Patent number: 6589305
    Abstract: Fused abrasive particles comprising eutectic material. The fused abrasive particles can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 8, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Anatoly Z. Rosenflanz
  • Patent number: 6589448
    Abstract: A ceramic bearing ball in which at least a portion of a constituent ceramic is formed of an electrically conductive inorganic compound phase, whereby a proper electrical conductivity is imparted to the ceramic. Thus, electrifying of a bearing ball is prevented or effectively suppressed. This prevents the problem involved in production of balls of small diameter wherein such balls adhere to an apparatus (e.g., a container) during production thereof, thus hindering smooth progress of the production process. In addition, when ceramic balls are used in precision electronic equipment, such as a hard disk drive of a computer, which is operated at high rotational speed, adhesion of foreign substance due to electrification of the balls, and resultant generation of abnormal noise or vibration can be prevented or effectively suppressed.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: July 8, 2003
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tomonori Niwa, Tetsuji Yogo
  • Patent number: 6583080
    Abstract: Fused, crystalline eutectic material comprising aluminum oxycarbide/nitride-Al2O3.rare earth oxide eutectics. Examples of useful articles comprising the fused eutectic material include fibers and abrasive particles.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: June 24, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Anatoly Z. Rosenflanz
  • Patent number: 6582488
    Abstract: Fused, crystalline eutectic material comprising Al2O3-rare earth oxide-ZrO2 eutectic. Examples of useful articles comprising the fused eutectic material include fibers and abrasive particles.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: June 24, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Anatoly Z. Rosenflanz
  • Patent number: 6551541
    Abstract: A method of manufacturing a building material includes the steps of directing molten volcanic magma from an underwater volcanic magna vent to a level above seal level via a tube formed from the magma, directing the molten volcanic magma into a mold located on a floating barge or located on land, and cooling the magma in the mold to form a building material. As an alternative to obtaining the magma from an underwater vent, the molten volcanic magma can be obtained from a vent on land, a lava pool or stream, tapping a lava tube, or the like. The molten volcanic magma can be cast, molded, formed, extruded, flossed, stranded, foamed and used as a heat source to produce harbor works, floors, walls, roofs, pipe, flotation, barges, vessels, insulation, fiber reinforcing and electricity.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: April 22, 2003
    Inventor: Louis L. Watson
  • Patent number: 6521331
    Abstract: A composite laminate or layer structure includes a substrate (2) and a cover layer (4) bonded thereon. The substrate is made up of at least one layer (3) of fiber-reinforced synthetic material. The cover layer includes at least one layer (5) of metal fibers and/or threads (6), and a metal sheet (7) forming the outer surface skin (8) of the layer structure. The metal sheet is bonded by soldering or sintering onto the metal fibers and/or threads (6), while the layer of metal fibers and/or threads in turn is bonded to the underlying fiber-reinforced synthetic material (3) by being mutually and integrally permeated by a synthetic resin matrix and bonding material. Also, the metal fibers and/or threads (6) may be intermeshed with the fibers of the synthetic material (3).
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: February 18, 2003
    Assignee: MTU Aero Engines GmbH
    Inventors: Siegfried Sikorski, Reinhold Schoenacher, Michael Schober
  • Patent number: 6508964
    Abstract: Ceramic sintered bodies having a different thickness along a predetermined axial direction are manufactured in the following manner. At first, a ceramic formed body to be sintered having different thickness along the predetermined axial direction is accommodated in a hot press apparatus. An upper forming mold and a lower forming mold each having a forming surface corresponding to an upper surface and a lower surface of the ceramic formed body to be sintered are set. A pressure along the predetermined axial direction is applied to the ceramic formed body to be sintered via the upper forming mold and the lower forming mold while heating the ceramic formed body to be sintered to perform a hot press sintering thereof. A thickness of a ceramic sintered body is controlled in such a manner that a maximum thickness in the predetermined direction is not more than two times a minimum thickness in the predetermined direction.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: January 21, 2003
    Assignee: NGK Insulators, Ltd
    Inventors: Hiromichi Kobayashi, Satoru Yamada, Tetsuhisa Abe
  • Publication number: 20030006525
    Abstract: Method for loading ceramic moulds presenting a die plate having at least one forming cavity in which a die is slidingly received, comprising the following operative steps for each complete loading cycle: preparing a powder layer at least the upper part of which has properties conforming to the required aesthetic characteristics of the exposed face of the tile; transferring said layer to above said at least one forming cavity; depositing into said at least one cavity a powder layer having a thickness greater than that necessary to obtain the desired tile thickness, and before pressing removing, by a mechanical cutting action with simultaneous removal of the thus separated material, the surface layer of the powder contained in the mould cavity, without appreciable mixing of the powder present at the interface between the surface layer and the underlying layer.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 9, 2003
    Applicant: SACMI - COOPERATIVA MECCANICI IMOLA SOC. COOP. A.R.I.
    Inventor: Pietro Rivola
  • Publication number: 20030006521
    Abstract: Method for loading ceramic moulds presenting a die plate having at least one forming cavity in which a die is slidingly received, comprising the following operative steps for each complete loading cycle: preparing a powder layer at least the upper part of which has properties conforming to the required aesthetic characteristics of the exposed face of the tile; transferring said layer to above said at least one forming cavity; depositing into said at least one cavity a powder layer having a thickness greater than that necessary to obtain the desired tile thickness, and before pressing removing, by suction, the surface layer of the powder contained in the mould cavity, without appreciable mixing of the powder present at the interface between the surface layer and the underlying material.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 9, 2003
    Applicant: SACMI - COOOPERATIVA MECCANICI IMOLA - SOC. COOP. A R. L.
    Inventor: Pietro Rivola