And Alkaline Earth Metal Or Magnesium Compound (e.g., Dolomite, Magnesium Oxide, Etc.) Patents (Class 501/101)
  • Patent number: 11035038
    Abstract: A solid delivery precursor is described, which is useful for volatilization to generate precursor vapor for a vapor deposition process. The solid delivery precursor comprises solid bodies of compacted particulate precursor, e.g., in a form such as pellets, platelets, tablets, beads, discs, or monoliths. When utilized in a vapor deposition process such as chemical vapor deposition, pulsed chemical vapor deposition, or atomic layer deposition, the solid delivery precursor in the form of solid bodies of compacted particulate precursor provide substantially increased flux of precursor vapor when subjected to volatilization conditions, in relation to the particulate precursor. As a result, vapor deposition process operation can be carried out in shorter periods of time, thereby achieving increased manufacturing rates of products such as semiconductor products, flat-panel displays, solar panels, LEDs, optical coatings, and the like.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: June 15, 2021
    Assignee: Entegris, Inc.
    Inventors: Thomas H. Baum, Yuqi Li, David James Eldridge, Robert L. Wright
  • Patent number: 10227260
    Abstract: A refractory has the form of a dry, mineral batch of fire-resistant mineral materials combined in such a way that refractories which are long-term resistant to fayalite-containing slags, sulfidic melts (mattes), sulfates and non-ferrous metal melts and are used for refractory linings in industrial non-ferrous metal melting furnaces can be manufactured. The refractory at least contains: —at least one coarse-grained magnesia raw material as the main component; —magnesia (MgO) meal; —at least one fire-resistant reagent which, during the melting process, acts (in situ) in a reducing manner on non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts and converts same into non-ferrous metal melts.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 12, 2019
    Assignee: Refratechnik Holding GmbH
    Inventors: Helge Jansen, Thomas Schemmel, Volker Stein
  • Patent number: 10207955
    Abstract: A refractory has the form of a dry, mineral batch of fire-resistant mineral materials combined in such a way that refractories which are long-term resistant to fayalite-containing slags, sulfidic melts (mattes), sulfates and non-ferrous metal melts and are used for refractory linings in industrial non-ferrous metal melting furnaces can be manufactured. The refractory at least contains: —at least one coarse-grained olivine raw material as the main component; —magnesia (MgO) meal; —at least one fire-resistant reagent which, during the melting process, acts (in situ) in a reducing manner on non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts and converts same into non-ferrous metal melts.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: February 19, 2019
    Assignee: Refratechnik Holding GmbH
    Inventors: Helge Jansen, Thomas Schemmel, Volker Stein
  • Patent number: 9606098
    Abstract: A moisture content indicator for visually indicating the moisture content of a wood substrate and methods of making the moisture content indicator are provided.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 28, 2017
    Assignee: Weyerhaeuser NR Company
    Inventors: Jack G. Winterowd, Erik M. Parker, Malinda J. De Lashmutt, Wayne Lindell, Tri Tran
  • Patent number: 9296660
    Abstract: Achieved is a ceramic carbon composite material and a ceramic-coated ceramic carbon composite material which are lighter than ceramics and excellent in at least one of properties including oxidation resistance, resistance to dust generation, heat conductivity, electrical conductivity, strength, and denseness. The ceramic carbon composite material is a ceramic carbon composite material in which an interfacial layer of a ceramic is formed between carbon particles of or containing graphite. The ceramic carbon composite material can be produced by forming a green body from ceramic-coated powder in which the surfaces of carbon particles of or containing graphite are coated with individual ceramic layers and sintering the green body.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: March 29, 2016
    Assignee: Toyo Tanso Co., Ltd.
    Inventors: Yoshinari Miyamoto, Weiwu Chen, Masaharu Nakamura, Taihei Matsumoto, Tetsuro Tojo
  • Patent number: 8722220
    Abstract: Provided is a hydrophobic catalyst layer for a polymer electrolyte fuel cell to which hydrophobicity is imparted so that the dissipation property of produced water is improved and which simultaneously has an increased effective surface area and an increased utilization ratio of a catalyst, and a method of producing the same. The catalyst layer for a polymer electrolyte fuel cell includes a catalyst obtained by reducing a platinum oxide, a hydrophobic agent, and a proton conductive electrolyte, wherein the hydrophobic agent is mainly composed of alkylsiloxane. An Si compound containing a hydrophobic substituent is brought into contact with a platinum oxide to subject the Si compound to hydrolysis and a polymerization reaction by the catalytic action of the platinum oxide, and then it is reduced, thereby obtaining a hydrophobic catalyst layer carrying an alkylsiloxane polymer.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yamada, Kazuya Miyazaki
  • Patent number: 8450228
    Abstract: In a carbon-containing refractory composed of a refractory aggregate, a carbon based raw material, and a carbon bond connecting between the refractory aggregate or the carbon based raw material, transition metal-containing nanoparticles having particle diameters of 1,000 nm or less and containing a transition metal are contained in the above-described carbon bond while being dispersed. When the carbon-containing refractory is heat-treated, flexible structures of carbon fiber-shaped textures having diameters of 50 nm or less are formed in the inside of a carbon bond and, thereby, an increase in strength, a reduction in modulus of elasticity, and a reduction in thermal expansion coefficient are facilitated. Therefore, a carbon-containing refractory exhibiting high thermal shock resistance, high abrasion resistance, and high corrosion resistance are provided.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: May 28, 2013
    Assignee: Krosaki Harima Corporation
    Inventors: Katsumi Morikawa, Koichi Haren, Joki Yoshitomi, Toshiyuki Hokii, Keisuke Asano
  • Publication number: 20120308813
    Abstract: A temperature-resistant ceramic hybrid material has a matrix made of calcium silicate hydrate. Carbon is embedded in the matrix. The carbon is predominantly composed of graphite particles having an ordered graphitic lattice structure and the carbon makes up a weight fraction of up to 40%. The matrix is composed of tobermorite and/or xonotlite and can contain wollastonite rods and/or granular silicate. The size of the graphite particles is 0.01-3 mm. The hybrid material is especially suitable for casting devices for non-ferrous metals.
    Type: Application
    Filed: January 14, 2011
    Publication date: December 6, 2012
    Applicant: CALISTHERM VERWALTUNGS GMBH
    Inventors: Klaus Hoelscher, Tobias Hoelscher, Wolf Huettner, Axel Lengen, Hans-Juergen Schneider, Winfried Stellmach
  • Patent number: 8278230
    Abstract: The present application relates to perfume systems and consumer products comprising new perfumes and/or such perfume systems, as well as processes for making and using such perfume systems and consumer products.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: October 2, 2012
    Assignee: The Procter & Gamble Company
    Inventors: Johan Smets, David Thomas Stanton, Rafael Trujillo Rosaldo, Allan Campbell McRitchie, Hugo Robert Germain Denutte, Thierry Granier, Andreas Hanhart, Jerzy A. Bajgrowicz, Philip Kraft
  • Patent number: 8251129
    Abstract: In an operation of continuous casting of steel grade such as aluminum-killed steel where a nozzle clogging phenomenon is particularly likely to occur, it is intended to prevent adhesion of inclusions (typically, Al2O3) on a nozzle used in the casting operation, and clogging of the nozzle due to the inclusions. A refractory material 10 is arranged to define a part or an entirety of a molten steel-contacting surface of a continuous casting nozzle, wherein the refractory material 10 contains: a CaO component in an amount of 0.5 mass % or more; one or both of B2O3 and R2O (R is one selected from the group consisting of Na, K and Li) in an amount of 0.5 mass % or more; Al2O3 in an amount of 50 mass % or more; and free carbon in an amount of 8.0 to 34.5 mass %, and wherein a total amount of CaO, B2O3 and R2O is in the range of 1.0 to 15.0 mass %, and a mass ratio of CaO/(B2O3+R2O) is in the range of 0.1 to 3.0.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: August 28, 2012
    Assignee: Krosakiharima Corporation
    Inventors: Katsumi Morikawa, Akinari Sasaki, Hiroshi Otsuka, Yuichi Tsukaguchi
  • Patent number: 8026191
    Abstract: The present invention provides a carbon-containing refractory composition comprising a carbon-containing refractory matrix material, and a binder selected from molasses, lignosulphonate, magnesium sulfate, magnesium chloride, and a mixture thereof. The inventive composition having satisfactory good thermal and physical properties causes no environmental hazard.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: September 27, 2011
    Assignee: Wonjin Worldwide Co., Ltd.
    Inventor: Jeong Heo
  • Publication number: 20110152059
    Abstract: A high-chromia refractory, comprised of: about 60% to about 99% by weight of refractory grain, wherein the refractory grain is comprised of grains having about 20% to 100% by weight chromia; 0% to about 35% by weight of a fine particulate, the fine particulate selected from chromic oxide, alumina, ceria, yttria, lanthanum oxide, or combinations thereof; and about 1% to about 8% of a liquid resin or pitch.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Inventors: H. David Prior, Glenn H. McIntyre, III
  • Publication number: 20100233497
    Abstract: A non-conductive ceramic material contains a base ceramic material and at least one other ceramic material having a lower coefficient of thermal expansion than that of the base material so that the coefficient of thermal expansion of the non-conductive ceramic material is identical to that of a metallic material to which it will be matched. Methods of making and using same are disclosed.
    Type: Application
    Filed: April 8, 2008
    Publication date: September 16, 2010
    Inventors: Alfred Thimm, Jürgen Ruska, Johannes Ernst, Stefan Stolz
  • Publication number: 20100093515
    Abstract: The invention relates to a refractory, ceramically fired, carbon-bonded magnesia brick whose matrix is more than 70% by weight, in particular from 80 to 98% by weight, of MgO grains and also a carbon framework binder matrix resulting from carbonization, and pores, wherein the MgO grains are fixed by means of carbon bonding of the carbon framework and at least 30%, in particular from 50 to 100%, of the MgO grains have at least one sintering bridge resulting from the ceramic firing.
    Type: Application
    Filed: February 26, 2008
    Publication date: April 15, 2010
    Inventor: Helge Jansen
  • Publication number: 20100065977
    Abstract: In one aspect, the present invention provides a method of providing a filling material for use in connection with an opening in a container used in molten metal processing including: recovering used refractory bricks; crushing the used refractory bricks into particles; and covering the opening with the particles.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 18, 2010
    Inventor: Joseph R. Quigley
  • Publication number: 20090233783
    Abstract: The present invention provides a carbon-containing refractory composition comprising a carbon-containing refractory matrix material, and a binder selected from molasses, lignosulphonate, magnesium sulfate, magnesium chloride, and a mixture thereof. The inventive composition having satisfactory good thermal and physical properties causes no environmental hazard.
    Type: Application
    Filed: May 8, 2007
    Publication date: September 17, 2009
    Inventor: Jeong Heo
  • Patent number: 7204878
    Abstract: This invention relates to refractory mixes produced by mixing a refractory material with an organic binder and heating to a temperature of typically from about 50° C. to about 100° C. to form a stable composite granulate. The refractor mixes comprise a major amount of a refractory material and a minor amount of a binder composition comprising (a) condensed tannin and (b) furfuryl alcohol. The refractory mixes are used to prepare shaped (e.g. bricks) and unshaped (e.g. blast furnace tap holes, troughs, and tundish liners) refractory products. The invention also relates to a process for preparing the refractory products using the refractory mixes.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: April 17, 2007
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: Mark R. Stancliffe
  • Patent number: 7182891
    Abstract: This invention concerns a non-basic refractory batch as well as its use.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: February 27, 2007
    Assignee: Refractory Intellectual Property GmbH & Co. KG
    Inventors: Malgorzata Bugajski, Karl-Heinz Dott, Alfons Lueftenegger
  • Patent number: 7179550
    Abstract: A member of supporting magnetic disc substrates is provided, comprising a ceramic sinter containing a ceramic component and at least one conductive component selected from a group consisting of iron, niobium, tin zinc, copper, nickel, cobalt, and chromium, wherein the ceramic sinter has conductive aggregates on its peripheral surface. In the member, the ceramic component may be forsterite and the conductive component is iron oxide, wherein the ceramic sinter comprises a main phase of 2MgO.SiO2 and a secondary phase of at least one of MgFe2O4, Fe3O4 and Fe2O3.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: February 20, 2007
    Assignee: Kyocera Corporation
    Inventors: Masahiro Okumura, Tetsuzi Hayasaki
  • Patent number: 7060642
    Abstract: Refractories obtained by molding a refractory raw material composition containing a refractory raw material including graphite grains having an average grain size of 500 nm or less or a refractory raw material including graphite grains obtained by graphitizing carbon black and a refractory filler. Or refractories containing carbonaceous grains (A) selected from carbon black or graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of 80 ml/100 g or more, carbonaceous grains (B) selected from carbon black and graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of less than 80 ml/100 g, and a refractory filler. Refractories excellent in corrosion resistance, oxidation resistance and thermal shock resistance, especially carbon-contained refractories having a low carbon content are thereby provided.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: June 13, 2006
    Assignees: Kyushu Refractories Co., Ltd.
    Inventors: Tsunemi Ochiai, Shigeyuki Takanaga
  • Patent number: 6846766
    Abstract: A batch, in particular for the production of a refractory shaped body, includes at least one refractory metal oxide component and a synthetic resin component as a binder, and a graphitizing auxiliary for producing crystalline graphite carbon from the resin. The graphitizing auxiliary originates from a group consisting of reducible organic compounds of transition elements and/or a group of active organic or inorganic metal compounds or metals, such as resin-soluble metal salts, chemically precipitated or micronized metal oxides or metals. The graphitizing auxiliary is available in molecular form over the time and/or temperature range of conversion of the synthetic resin into carbon (carbonization).
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: January 25, 2005
    Assignee: Refratechnik Holding GmbH
    Inventors: Peter Bartha, Helge Jansen, Heinrich Grosse Daldrup
  • Patent number: 6846510
    Abstract: The invention relates to a method for deposition of a catalyst, in particular a method for coating a membrane electrode unit (MEA) for a fuel cell. Said method requires no external electrical field as usual for conventional galvanic techniques. The support for the catalytic layer is first capacitively charged (pseudocapacitance). When brought into contact with an electrolyte solution, comprising the catalyst in the form of dissolved metal salt ions, an in-situ reduction (deposition) of the metal salt ions to give metallic catalyst occurs at the site of contact.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: January 25, 2005
    Assignees: Forschungszentrum Julich GmbH, Prof. Dr. Rolf Hempelmann
    Inventors: Rolf Hempelmann, Heinz Schmitz, March-Simon Löffler, Harald Natter, Jiri Divisek
  • Patent number: 6846763
    Abstract: A refractory repair batch material includes a refractory, in particular a basic resistor component in granule form and a binder system. The binder system contains at least one hard bitumen component in granule form, at least one ignitable metal powder and at least one combustible mineral oil.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: January 25, 2005
    Assignee: Refratechnik Holding GmbH
    Inventors: Helge Jansen, Heinrich Grosse Daldrup
  • Patent number: 6844281
    Abstract: A preform for use in a metal matrix composite, particularly for a magnesium metal composite. In the preform the reinforcing material typically is silicon carbide, boron nitride, titanium nitride, carbon or graphite. The binder used in the preform is sintered magnesium fluoride, which avoids the known problems which result from the high reactivity of molten magnesium metal with other binders, such as silica and alumina, which results in the formation of magnesium oxide in the reinforced composite. The presence of magnesium oxide crystals in the metal matrix adversely affects the properties of the composite. The preform generally has a void volume of from about 50% to about 95%.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: January 18, 2005
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources
    Inventors: Jason S. H. Lo, Areekattuthazhayil K. Kuriakose, Raul Santos
  • Publication number: 20040106509
    Abstract: Refractories obtained by molding a refractory raw material composition containing a refractory raw material including graphite grains having an average grain size of 500 nm or less or a refractory raw material including graphite grains obtained by graphitizing carbon black and a refractory filler. Or refractories containing carbonaceous grains (A) selected from carbon black or graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of 80 ml/100 g or more, carbonaceous grains (B) selected from carbon black and graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of less than 80 ml/100 g, and a refractory filler. Refractories excellent in corrosion resistance, oxidation resistance and thermal shock resistance, especially carbon-contained refractories having a low carbon content are thereby provided.
    Type: Application
    Filed: September 8, 2003
    Publication date: June 3, 2004
    Inventors: Tsunemi Ochiai, Shigeyuki Takanaga
  • Publication number: 20040102306
    Abstract: The invention relates to a refractory repair batch material, which includes a refractory, in particular basic resistor component in granule form and a binder system, the binder system containing at least one hard bitumen component in granule form, at least one ignitable metal powder and at least one combustible mineral oil.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 27, 2004
    Inventors: Helge Jansen, Heinrich Grosse Daldrup
  • Patent number: 6645425
    Abstract: The invention relates to a refractory batch containing at least one refractory metal oxide component, at least one binder component, such as resin or pitch, if appropriate antioxidants, at least one carbon carrier, such as soot and/or graphite, and reinforcement fibers which are formed from a stainless steel material, which at the temperatures of use forms a coat of the refractory metal oxide on its surface, and to a shaped body made from the batch and to a process for producing the shaped body.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: November 11, 2003
    Assignee: Refractechnik Holding GmbH
    Inventors: Hans Wienand, Helge Jansen, Peter Bartha
  • Patent number: 6586355
    Abstract: An improved submerged entry nozzle is provided which is useful in the casting of aluminum killed molten steel. The nozzle has an improved slagline sleeve or collar which surrounds the outer portion of the nozzle to protect it from corrosion during the casting process. The slagline sleeve is made from resin bonded zirconia/graphite which has been formulated so that upon curing of the resin to form resite, there is a reduction in the contractile tendency which results in a reduction in stress fracturing. The reduction of the contractile tendency and the resulting resistance to stress fracturing is achieved by adding an effective amount of calcium oxide to the resin-zirconia-graphite mixture which is used to form the sleeve.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: July 1, 2003
    Assignee: Baker Refractories
    Inventors: Donald B. Hoover, Franklin A. Renda, Donald J. Griffin, Colin Richmond
  • Patent number: 6533994
    Abstract: The invention relates to an alkaline (basic), refractory ceramic hollow item.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: March 18, 2003
    Assignee: Didier-Werke AG
    Inventors: Steven Lee, Dirk Masurat, Ian Proudfoot, Jim McIntosh
  • Patent number: 6533146
    Abstract: A continuous casting nozzle for casting molten steel, wherein at least a surface layer of an inner bore of the continuous casting nozzle contacting with a molten steel is formed of a refractory comprising: an aggregate consisting essentially of alumina (Al2O3) or an aggregate comprising alumina (A12O3) as its main ingredient and melting point thereof being at least 1800 degree centigrade: from 15 to 60 wt. % and roseki as a balance. The refractory is added thermosetting resin as binder, kneaded, formed, and sintered in an anti-oxidizing atmosphere.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: March 18, 2003
    Assignee: Akechi Ceramics Kabushiki Kaisha
    Inventors: Mituru Ando, Kazumi Oguri, Toshiyuki Muroi, Toshikazu Takasu
  • Publication number: 20020177517
    Abstract: An improved submerged entry nozzle is provided which is useful in the casting of aluminum killed molten steel. The nozzle has an improved slagline sleeve or collar which surrounds the outer portion of the nozzle to protect it from corrosion during the casting process. The slagline sleeve is made from resin bonded zirconia/graphite which has been formulated so that upon curing of the resin to form resite, there is a reduction in the contractile tendency which results in a reduction in stress fracturing. The reduction of the contractile tendency and the resulting resistance to stress fracturing is achieved by adding an effective amount of calcium oxide to the resin-zirconia-graphite mixture which is used to form the sleeve.
    Type: Application
    Filed: February 11, 2002
    Publication date: November 28, 2002
    Applicant: Baker Refractories, Inc.
    Inventors: Donald B. Hoover, Franklin A. Renda, Donald J. Griffin, Colin Richmond
  • Patent number: 6464932
    Abstract: An unburned carbon-containing refractory suitable for lining a molten metal container, which can prevent deformation of the outer steel shell, improve the life of the container, suppress reduction in molten steel temperature, and minimize energy losses without sacrificing the life of the wear lining. A molten metal container capable of reducing energy losses and having stable durability is also provided. The unburned carbon-containing refractory contains a refractory aggregate and 30% by weight or less of a carbon raw material containing at least graphite, wherein the carbon content X (% by weight) and the thermal conductivity &lgr;(W/m° C.) of the refractory satisfy the relationship: &lgr;≦0.8X+7, and the refractory contains 20 parts by weight or more of a refractory aggregate having an apparent porosity of 10% or smaller and a greater size than 1 mm per 100 parts by weight of the total of the refractory aggregate and the carbon raw material.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: October 15, 2002
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Osamu Nomura, Yasuhiro Hoshiyama, Atsushi Torigoe
  • Patent number: 6461991
    Abstract: A re-usable alumina-magnesia graphite refractory suitably used for a refractory for continuous casting, such as a long nozzle used for pouring a molten metal from a ladle capable of re-use or intermittent use to a tundish, an immersion nozzle used for charging a molten metal from a tundish to a mold and a long stopper for controlling the flow rate of the molten steel; and produced by blending 3 to 60 wt % of magnesia having a particle size of 0.02 to 1.0 mm to a compound comprising mainly alumina and graphite, and kneading, molding, and baking the compound. The raw material compound comprising mainly alumina and graphite can contain spinel or zirconia.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: October 8, 2002
    Assignee: Krosaki Corporation
    Inventors: Koji Ogata, Shoji Iitsuka
  • Patent number: 6423129
    Abstract: A coating for roofs and the like to inexpensively provide protection from ultraviolet light and for wood or steel substrates to inexpensively provide flame or chemical resistance respectively. The coating comprises an adhesive and a recycled ceramic powder and may also comprise a recycled granular ceramic material. An additive to sealants, caulking, and other construction materials to inexpensively provide improved fire resistance and insulation and other enhanced properties. The additive comprises a recycled ceramic powder and may also comprise a recycled granular ceramic material.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: July 23, 2002
    Inventor: Robert T. Fitzgibbons, Jr.
  • Patent number: 6410469
    Abstract: An improved submerged entry nozzle is provided which is useful in the casting of aluminum killed molten steel. The nozzle has an improved slagline sleeve or collar which surrounds the outer portion of the nozzle to protect it from corrosion during the casting process. The slagline sleeve is made from resin bonded zirconia/graphite which has been formulated so that upon curing of the resin to form resite, there is a reduction in the contractile tendency which results in a reduction in stress fracturing. The reduction of the contractile tendency and the resulting resistance to stress fracturing is achieved by adding an effective amount of calcium oxide to the resin-zirconia-graphite mixture which is used to form the sleeve.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: June 25, 2002
    Assignee: Baker Refractories, Inc.
    Inventors: Donald B. Hoover, Franklin A. Renda, Donald J. Griffin, Colin Richmond
  • Publication number: 20020022567
    Abstract: An essentially non-slumping sprayable refractory castable composition that is applied without forms is disclosed comprising (a) a tempered, pumpable first component comprising (i) one hundred weight percent of a refractory composition comprising from about 60 to 90 weight percent of a refractory aggregate, from about 2 to 25 weight percent of an ultrafine refractory material having an average particle diameter size less than or equal to about 3 microns, from about 0.5 to 15 weight percent of a binder, and from about 0.05 to 2.
    Type: Application
    Filed: August 29, 2001
    Publication date: February 21, 2002
    Inventors: Xiangmin Li, Robert M. Cullen
  • Patent number: 6313056
    Abstract: An essentially non-slumping sprayable refractory castable composition that is applied without forms is disclosed comprising (a) a tempered, pumpable first component comprising (i) one hundred weight percent of a refractory composition comprising from about 60 to 90 weight percent of a refractory aggregate, from about 2 to 25 weight percent of an ultrafine refractory material having an average particle diameter size less than or equal to about 3 microns, from about 0.5 to 15 weight percent of a binder, and from about 0.05 to 2.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: November 6, 2001
    Assignee: Harbison-Walker Refractories Company
    Inventors: Xiangmin Li, Robert M. Cullen
  • Publication number: 20010024748
    Abstract: The invention improves operability in forming a catalyst electrode, and improves performance of a fuel cell. A catalyst-loaded carbon is dispersed in a mixed solution of an azeotropic solvent and ion exchanged water. An electrolyte solution is added to the dispersed solution. A solvent, such as ethanol or the like, is added to adjust the viscosity and the water content of the solution, thereby providing an electrode catalyst solution. The use of the obtained solution as an ink for forming a catalyst layer through printing improves printing characteristic and drying characteristic.
    Type: Application
    Filed: March 19, 2001
    Publication date: September 27, 2001
    Inventors: Seiji Mizuno, Tatsuya Kawahara
  • Patent number: 6288001
    Abstract: A graphite-containing monolithic refractory material comprises at least one component selected from alumina and alumina-magnesia spinel, which are divided into selected particle size regions, artificial graphite having a selected average particle size, and pitch powder. The refractory material may optionally comprise a selected amount of silicon carbide having a selected average particle size. The graphite-containing monolithic refractory material exhibits excellent casting workability at a low moisture content, and both excellent corrosion resistance and spalling resistance. The refractory material is suitable as a casting monolithic refractory material for lining a topedo ladle car.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: September 11, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Yoshisato Kiyota, Masato Kumagai, Masao Nanbu, Shigenobu Takata, Masakazu Iida, Noboru Komatsubara, Toyohide Yamaguchi
  • Patent number: 6284689
    Abstract: The invention relates to refractory waste materials and in particular to waste materials removed from furnace linings. Refractory waste materials often have hydrolysable contaminants making the material unsuitable for use in making new products. The invention provides an economical treatment process that renders such materials suitable for reuse. The process includes maintaining a particulate feedstock created from the waste material at a temperature in the range 275-500° C. and applying superheated steam to the material.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: September 4, 2001
    Assignee: Vesuvius Crucible Company
    Inventor: Ian Strawbridge
  • Patent number: 6283341
    Abstract: A continuous casting nozzle for casting molten steel, wherein at least a surface layer of an inner bore of the continuous casting nozzle contacting with a molten steel is formed of a refractory comprising: an aggregate consisting essentially of zirconia (ZrO2), or comprising zirconia (ZrO2) as its main component and melting point thereof being at least 1750° C.: from 15 to 60 wt. %; and roseki as a balance. The refractory is added to a thermosetting resin as a binder, kneaded, formed, and sintered in an anti-oxidizing atmosphere.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: September 4, 2001
    Assignee: Akechi Ceramics Kabushiki Kaisha
    Inventors: Toshiyuki Muroi, Kazumi Oguri
  • Patent number: 6257466
    Abstract: A continuous casting nozzle for casting molten steel, wherein the surface layer of the bore of said continuous casting nozzle contacting with the molten steel is formed of a refractory material comprising silicon carbide from 1 to 10 wt %, an aggregate comprising alumina or an aggregate which comprises alumina as main component whose melting point is not less than 1800 degree C. from 15 to 60 wt %, and roseki as a main component from 30 to 84 wt %.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: July 10, 2001
    Assignee: Akechi Ceramics Kabushiki Kaisha
    Inventors: Toshiyuki Muroi, Kazumi Oguri
  • Patent number: 6113802
    Abstract: An insulation material which is substantially free of fibers and which has a density of less than about 2.5 g/cc and a thermal conductivity of less than about 5 W/Km is formed from a composition comprising at least about 2%, by weight, carbon. The insulation material is resistant to thermal shock and is easily machined.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: September 5, 2000
    Assignee: Micropyretics Heaters International, Inc.
    Inventor: Srinivas Penumella
  • Patent number: 5990027
    Abstract: Flexible graphite sheet having embedded ceramic fibers extending from its surfaces into the sheet to increase the permeability of the sheet to resin. The resin impregnated sheet is formed into a sealing gasket.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: November 23, 1999
    Assignee: UCAR Carbon Technology Corporation
    Inventors: Robert Angelo Mercuri, Joseph Paul Capp, Jeffrey John Gough
  • Patent number: 5932506
    Abstract: A refractory castable comprised of:about 45% to about 75% by weight high alumina grain;about 2% to about 35% by weight silicon carbide;about 1% to about 8% by weight carbon;about 1% to about 8% by weight calcium aluminate cement; andabout 1% to about 10% by weight fine magnesium aluminate spinel,the spinel having a grain size of less than about 150 .mu.m (100 Tyler mesh) and being comprised of about 10% to about 33% by weight magnesium oxide (MgO) and about 67% to about 90% by weight alumina (Al.sub.2 O.sub.3).
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: August 3, 1999
    Inventor: Jeffrey E. Bogan
  • Patent number: 5912243
    Abstract: A compound having the formula R--S(O).sub.n CH.sub.2 CH.sub.2 CH.dbd.CF.sub.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: June 15, 1999
    Assignee: Zeneca Limited
    Inventors: Alan John Dowling, Alison Mary Craig, Christopher Richard Ayles Godfrey, Harjinder Singh Bansal, Matthew Brian Hotson, Michael Drysdale Turnbull, Nan Catherine Sillars, Roger Salmon, Steven Fitzjohn
  • Patent number: 5911900
    Abstract: The invention is related to a continuous casting nozzle for casting of aluminum killed steel without clogging of the bore of the nozzle. The surface layer of the bore of the continuous casting nozzle contacting with the molten steel is formed of a refractory comprising graphite from 10 to 35 wt %, an aggregate of 10 to 60 wt % selected from alumina matter, zirconia matter, zircon matter, or alumina-silica matter and roseki containing the pyrophyllite (Al.sub.2 O.sub.3 .multidot.4SiO.sub.2 .multidot.H.sub.2 O) as the main component as the remaining part of the above mentioned materials.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: June 15, 1999
    Assignee: Akechi Ceramics
    Inventors: Toshiyuki Muroi, Shojiro Naito
  • Patent number: 5866490
    Abstract: Disclosed is a monolithic refractory comprising 1 to 30 weight parts of pitch having 65 to 90 wt.-% of fixed carbon and a softening point of 250.degree. to 350.degree. C. to form a carbon bond, relative to 100 weight parts of refractory material so as to form carbon bond. The monolithic refractory can contain 0.01 to 0.5 weight parts of carbon fiber. The composition of the invention may be used as any type of monolithic refractory such as gunning material, casting material, in particular, aqueous type casting material, burning type hot repairing mix, mortar, Tamping material, and any basic, neutral, or acid refractory material may be used. The monolithic refractory is capable of solving the drawbacks of the conventional monolithic refractories such as rupture, lack of low shrinkage, low bonding strength, low hot strength, and having both superior strength and superior applicability.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: February 2, 1999
    Assignee: Kyushu Refractories Co., Ltd.
    Inventors: Akira Watanabe, Hirokuni Takahashi, Shigeyuki Takanaga, Yasutoshi Mizuta
  • Patent number: 5856251
    Abstract: Castable refractory for a slide gate plate is mainly formed of alumina raw material and amorphous carbon raw material of 2 to 15 wt %, and contains silicon carbide and/or boron carbide, the total content thereof being equal to 0.5 to 10 wt % (the content of boron carbide is equal to or less than 3 wt %, and when the content of boron carbide is less than 0.5 wt %, silicon carbide is set to 3 wt % or more), 2 to 10 wt % magnesia of 1 mm or less in particle size, 0.2 to 3 wt % silica fine powder of 5 micrometers or less in particle size, and 0.1 to 5 wt % salt of condensate of formalin and aromatic sulfonate.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: January 5, 1999
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Hisahiro Teranishi, Isao Imai, Toshihiro Indou
  • Patent number: 5838104
    Abstract: An improved compact, white color and pulse operated high pressure sodium vapor arc discharge lamp employing a radiation sensitive getter RF flashed onto the inner surface of the outer lamp envelope has a ceramic radiation shield interposed between the arc tube and getter.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: November 17, 1998
    Assignee: General Electric Company
    Inventors: Douglas M. Rutan, Curtis E. Scott, Jeannine A. Woyansky, Katherine L. McGinnis