Group Iiia Metal Or Beryllium (al, Ga, In, Tl, Or Be) Patents (Class 423/495)
  • Publication number: 20150140791
    Abstract: There is provided an apparatus for producing metal chloride gas, comprising: a source vessel configured to store a metal source; a gas supply port configured to supply chlorine-containing gas into the source vessel; a gas exhaust port configured to discharge metal chloride-containing gas containing metal chloride gas produced by a reaction between the chlorine-containing gas and the metal source, to outside of the source vessel; and a partition plate configured to form a gas passage continued to the gas exhaust port from the gas supply port by dividing a space in an upper part of the metal source in the source vessel, wherein the gas passage is formed in one route from the gas supply port to the gas exhaust port, with a horizontal passage width of the gas passage set to 5 cm or less, with bent portions provided on the gas passage.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventor: Hajime FUJIKURA
  • Patent number: 8709368
    Abstract: The invention provides a preparation process of transition metal boride, comprising the following steps: A) aluminum is put in a reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the molten liquid at the upper layer is sucked out and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride.
    Type: Grant
    Filed: December 9, 2012
    Date of Patent: April 29, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Jun Yang, Zhihong Li, Weiping Wu
  • Patent number: 8641996
    Abstract: A cyclic preparation method including the following steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluotitanate; B) the potassium fluoborate is mixed with the potassium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and potassium cryolite; C) the potassium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as potassium sulfate and potassium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution and potassium sulfate aqueous solution are recycled.
    Type: Grant
    Filed: December 9, 2012
    Date of Patent: February 4, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Yueming Yu, Qingdong Ye, Jun Yang, Zhi Zhou
  • Publication number: 20130319320
    Abstract: A production method of aluminum based group III nitride single crystal includes a reaction step, wherein a halogenated gas and an aluminum contact at 300° C. or more to 700° C. or less, producing a mixed gas including an aluminum trihalide gas and an aluminum monohalide gas; a converting step, wherein the aluminum monohalide gas is converted to a solid by setting a temperature of the mixed gas equal to or higher than a temperature to which a solid aluminum trihalide deposit, and lower by 50° C. or more than a temperature to which halogenated gas and aluminum contact in the reaction step; a separation step, wherein the aluminum trihalide gas is removed; and a crystal growth step, wherein the aluminum trihalide gas is used for an aluminum based group III nitride single crystal raw material, keeping its temperature equal to or higher than a temperature of the converting step.
    Type: Application
    Filed: December 15, 2011
    Publication date: December 5, 2013
    Applicant: TOKUYAMA CORPORATION
    Inventors: Toru Nagashima, Keiichiro Hironaka
  • Patent number: 8574526
    Abstract: A cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct, which comprises the steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with sodium carbonate solution for concentration and crystallization to generate sodium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with sodium carbonate and sodium hydroxide to obtain sodium fluotitanate; B) the sodium fluoborate is mixed with the sodium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and sodium cryolite; C) the sodium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as sodium sulfate and sodium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric aci
    Type: Grant
    Filed: December 8, 2012
    Date of Patent: November 5, 2013
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Yueming Yu, Qingdong Ye, Jun Yang, Zhi Zhou
  • Publication number: 20130130477
    Abstract: According to the invention, there is provided a method for producing a gallium trichloride gas, the method including: a first step of reacting a metallic gallium and a chlorine gas to produce a gallium monochloride gas; and a second step of reacting the produced gallium monochloride gas and a chlorine gas to produce a gallium trichloride gas.
    Type: Application
    Filed: May 11, 2011
    Publication date: May 23, 2013
    Applicant: National University Corporation Tokyo University of Agriculture and Technology
    Inventors: Akinori Koukuti, Yoshinao Kumagai
  • Publication number: 20130071344
    Abstract: A hair care composition comprising: i) at least 1.6 wt % of the total composition of a group III or group IV metal salt or combination thereof; and ii) a charged polymer; and iii) a silicone; in which the composition has a pH of 4 or below at 20° C.
    Type: Application
    Filed: June 2, 2011
    Publication date: March 21, 2013
    Inventors: Samiul Amin, Prem Kumar Cheyqalazhagan Paul, Pamela Eileen Red
  • Patent number: 8388925
    Abstract: Methods for producing aluminum trifluoride by acid digestion of fluoride salts of alkali metal or alkaline earth metal and aluminum, optionally, in the presence of a source of silicon; methods for producing silane that include acid digestion of by-products of silane production to produce aluminum trifluoride.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: March 5, 2013
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Puneet Gupta, Satish Bhusarapu
  • Patent number: 8231848
    Abstract: Ternary and quaternary Chalcopyrite CuInxGa1-xSySe2-y (CIGS, where 0?x and y?1) nanoparticles were synthesized from molecular single source precursors (SSPs) by a one-pot reaction in a high boiling solvent using salt(s) (i.e. NaCl as by-product) as heat transfer agent via conventional convective heating method. The nanoparticles sizes were 1.8 nm to 5.2 nm as reaction temperatures were varied from 150° C. to 190° C. with very high-yield. Tunable nanoparticle size is achieved through manipulation of reaction temperature, reaction time, and precursor concentrations. In addition, the method developed in this study was scalable to achieve ultra-large quantities production of tetragonal and quaternary Chalcopyrite CIGS nanoparticles.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: July 31, 2012
    Assignee: Sun Harmonics Ltd
    Inventors: Yuhang Ren, Chivin Sun, Kai Shum
  • Patent number: 8173094
    Abstract: The present invention provides a method for producing polycrystalline silicon. The method for producing polycrystalline silicon comprises the steps of (A), (B), and (C), (A) reducing a chlorosilane represented by the formula (1) with a metal at a temperature T1 to obtain a silicon compound; SiHnCl4-n??(1) ?wherein n is an integer of 0 to 3, (B) transferring the silicon compound to a zone having a temperature T2, wherein T1>T2; and (C) depositing polycrystalline silicon in the zone having a temperature T2, wherein the temperature T1 is not less than 1.29 times of a melting point (Kelvin unit) of the metal, and the temperature T2 is higher than a sublimation point or boiling point of the chloride of the metal.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: May 8, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiharu Yamabayashi, Masahiko Hata
  • Patent number: 8007759
    Abstract: A static ion-exchange process for the preparation of a polynuclear Al species comprising the treatment of an aqueous aluminum chloride solution with a hydroxide-form ion-exchange resin at a temperature of from 5° C. to 60° C. for a period of at least 30 minutes.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 30, 2011
    Assignee: Conopco Inc.
    Inventors: Olivier Deschaume, Carole Celia Perry, Kirill Shafran
  • Publication number: 20110123424
    Abstract: Process for the phase transformation of substances and mixtures of substances, in which the substance or the mixture of substances is introduced into a plasma reactor, the substance or the mixture of substances is converted into the higher-energy phase and the product is removed in gaseous form from the plasma reactor. The process can be used for the sublimation of metal salts, metal nitrates and/or metal alkoxides and other vaporizable metal organic compounds.
    Type: Application
    Filed: May 7, 2009
    Publication date: May 26, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Aymee Lisette Michel De Arevalo, Patrik Stenner, Stefan Fiedler, Dieter Kerner, Manfred Nagel
  • Patent number: 7906097
    Abstract: There is provided a process for preparing aluminium chloride comprising leaching aluminium dross residues with H2SO4 so as to obtain a leachate; and hydrochlorinating the leachate so as to obtain aluminium chloride. If desired, aluminium chloride can then be converted into alumina.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: March 15, 2011
    Assignee: Groupe Conseil Procd Inc.
    Inventors: Martin Beaulieu, Stéphane Chabot, Yves Charest, Jean-François Savard
  • Publication number: 20110052482
    Abstract: Vaporizable material is supported within a vessel to promote contact of an introduced gas with the vaporizable material, and produce a product gas including vaporized material. A heating element supplies heat to a wall of the vessel to heat vaporizable material disposed therein. The vessel may comprise an amoule having a removable top. Multiple containers defining multiple material support surfaces may be stacked disposed within a vessel in thermal communication with the vessel. A tube may be disposed within the vessel and coupled to a gas inlet. Filters, flow meters, and level sensors may be further provided. Product gas resulting from contact of introduced gas with vaporized material may be delivered to atomic layer deposition (ALD) or similar process equipment. At least a portion of source material including a solid may be dissolved in a solvent, followed by removal of solvent to yield source material (e.g., a metal complex) disposed within the vaporizer.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 3, 2011
    Applicant: ADVANCED TECHNOLOGY MATERIALS, INC.
    Inventors: John N. Gregg, Scott L. Battle, Jeffrey I. Banton, Donn K. Naito, Ravi Laxman
  • Publication number: 20110038809
    Abstract: The present invention provides methods for treating or preventing diseases and disorders caused by iron-dependent pathogenic microorganisms, such as bacteria, fungi, and parasites, by applying a gallium compound to an affected area. In particular, the present invention provides methods for treating or preventing dental caries, vaginal infections, skin infections, and so forth. Gallium compounds can be formulated as toothpaste, mouthwash, cream, ointment, gel, solution, eye drops, suppository, and the like. Furthermore, the invention provides methods for controlling microbial growth on environmental surfaces, including those of toothbrush, denture, dental retainer, contact lens, catheter, food stuff, and so forth. In addition, the present invention provides animal feeds which contain gallium compounds that promote the animal growth and prevent the animals from infections as well as protect consumers from post processing infections.
    Type: Application
    Filed: October 31, 2006
    Publication date: February 17, 2011
    Inventors: Daniel P. Perl, Sharon Moalem
  • Patent number: 7883680
    Abstract: The present invention provides for methods of purifying silicon, methods for obtaining purified silicon, as well as methods for obtaining purified silicon crystals, purified granulized silicon and/or purified silicon ingots.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: February 8, 2011
    Assignee: 6N Silicon Inc.
    Inventor: Scott Nichol
  • Patent number: 7846232
    Abstract: A method of producing titanium metal from a titanium-containing material includes the steps of producing a solution of M?TiF6 from the titanium-containing material, selectively precipitating M?2TiF6 from the solution by the addition of (M?)aXb and using the selectively precipitated M?2TiF6 to produce titanium. M? is a cation of the type which forms a hexafluorotitanate, M? is selected from ammonium and the alkali metal cations, X is an anion selected from halide, sulphate, nitrite, acetate and nitrate and a and b are 1 or 2.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: December 7, 2010
    Assignee: Adams & Adams
    Inventor: Gerard Pretorius
  • Publication number: 20100303749
    Abstract: An antiperspirant active composition comprising an aluminum salt having an aluminum to chloride molar ratio of about 0.3:1 to about 3:1, exhibiting a SEC chromatogram having SEC Peak 4 to Peak 3 intensity ratio of at least 7 and a Peak 4 intensity greater than a Peak 5 intensity in aqueous solution. The composition can optionally include zirconium. Also, methods and processes or making the same.
    Type: Application
    Filed: December 12, 2008
    Publication date: December 2, 2010
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventor: Long Pan
  • Patent number: 7704470
    Abstract: The present invention is drawn to a method for removing colloidal titanium dioxide and titanium oxychloride from by-product hydrochloric acid. The method includes adding phosphate ion source and quaternary amine to the by-product acid to cause the titanium dioxide and the titanium oxychloride to form a precipitate. The precipitate can then be separated from the acid, thus producing a decontaminated hydrochloric acid product with reduced levels of titanium.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: April 27, 2010
    Assignee: Haydock Consulting Services, LC
    Inventor: Frederick Haydock
  • Publication number: 20100061919
    Abstract: A method is provided for the production of a stable mid- and high-basicity polyaluminum chloride and polyaluminum chlorosulfate, respectively from sodium aluminate and aluminum chloride or low- or mid-basicity polyaluminum chloride by ultrasonic processing of the reactants. The method overcomes the formation of gels and insoluble precipitates that typically form when mixing sodium aluminate and aluminum chloride and the formation of sodium chloride, which is insoluble in high concentration polyaluminum chloride solutions. The invention eliminates the cumbersome extended heating periods previously required to deal with the formation of insoluble aluminum oxide precipitates in batches of polyaluminum chloride produced from sodium aluminate and aluminum chloride using high-shear mixing.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Inventors: LEVI JAMES GROVE, Kevin Edward Janak
  • Patent number: 7651676
    Abstract: There is provided a process for preparing aluminium chloride comprising: leaching aluminium dross residues with HCl so as to obtain a mixture comprising a solid and a liquid; and hydrochlorinating the liquid obtained from the mixture, so as to form a precipitate comprising aluminium chloride. Such a sequence can also be used for preparing alumina. In such a case, the process can further comprise the step of converting the so-obtained aluminium chloride into alumina. In the processes previously defined, the solid so-obtained can also be leached with H2SO4, thereby generating a leachate. The leachate can also eventually be hydrochlorinated so as to increase the yield of the desired product obtained i.e. alumina or aluminium chloride.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: January 26, 2010
    Assignee: Groupe Conseil Procd Inc.
    Inventors: Martin Beaulieu, Stéphane Chabot, Yves Charest, Jean-François Savard
  • Patent number: 7591990
    Abstract: There is provided a process for preparing compounds of formula M3M1A2. The process comprises reacting a compound of formula M2M1A2 with a compound of formula M3X2, in the presence of at least one coordinating solvent. M1 can be chosen from B3+, Al3+, Ga3+, In3+, Tl3+, Fe3+, and Au3+; M2 can be chosen from Li+, Na+, K+, Cs+, (T1)3Si—, and N(T2)4+; M3 can be chosen from Cu+, Ag+, Li+, Na+, K+, Cs+, Rb+, Fr+, Au+, and Hg+; A can be chosen from S and Se; and X2 can be chosen from Cl?, Br?, I?, F?, CH3COO?, NO3?, and CN?. Such compounds can be used for various purposes in the field of electrochemistry.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: September 22, 2009
    Assignee: Transfert Plus, S.E.C. Inc.
    Inventors: Amer Hammami, Benoit Marsan, Fabrice Courtel, Mario Morin
  • Patent number: 7592287
    Abstract: The present invention is related to a method for preparing an amorphous metal fluoride of the formula MX+FX?? comprising the steps of a) providing a precursor, whereby the precursor comprises a structure having a formula of Mx+F(x??)?yBy; and b) reacting the precursor with a fluorinating agent generating the amorphous metal flouride having a formula of Mx+Fx??, whereby M is selected from the group comprising metals of the second, third and fourth main group and any subgroup of the periodic table, B is a coordinately bound group; x is any integer of 2 or 3; y is any integer between 1 and 3; ? is 0 to 0.1; and x??>y.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: September 22, 2009
    Assignee: Humboldt-Universitaet Zu Berlin
    Inventors: Erhard Kemnitz, Udo Gross, Stephan Ruediger
  • Patent number: 7588741
    Abstract: Cyclical batch processes for halogenation, such as chlorination, of minerals in a fixed bed using a plurality of cycles which include the steps of at least partially evacuating the bed, charging the bed with reactant gas, maintaining the reactant gas in the bed for a predetermined time, and exhausting reaction products under vacuum. Also disclosed is the chlorination of spodumene in its beta crystalline form produced by calcining spodumene in its naturally-occurring alpha crystalline form to preferentially extract lithium as lithium chloride.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: September 15, 2009
    Inventors: Wendell E. Dunn, Jr., Jeffrey Van Jahnke
  • Publication number: 20090028766
    Abstract: The present invention provides high purity anhydrous aluminium chloride which is freed as completely as possible from all the major impurity components (impurity metals) derived from starting aluminium used in industrial production of anhydrous aluminium chloride, wherein a content of the major impurity components except gallium (Ga), such as Na, K, Si, Fe, etc. is 1 ppm or less, and a purity of the anhydrous aluminium chloride as determined by subtracting a total content of the impurity components is 99.99% by weight or more, preferably 99.999% or more, and a process for production thereof.
    Type: Application
    Filed: April 3, 2006
    Publication date: January 29, 2009
    Applicant: Nippon Light Metal Company, Ltd.
    Inventor: Shinji Imamura
  • Publication number: 20080181840
    Abstract: Methods of making basic aluminum halides, such as basic aluminum chlorides, are described, which includes the use of catalysts, such as nickel cations or cobalt cations.
    Type: Application
    Filed: January 25, 2007
    Publication date: July 31, 2008
    Inventors: Joe C. Steelhammer, Hollie Copeland
  • Patent number: 7087209
    Abstract: A method for producing halide brine wherein an alkali and a reducing agent are added to an aqueous fluid having a density greater than 8.30 lb/gal., (0.996 kg/L) water, waste water or sea water for example. The resulting fluid is then contacted with a halogen to form a halide brine. The reaction occurs in a conventional reactor such as a mixing tank.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: August 8, 2006
    Assignee: Tetra Technologies, Inc.
    Inventors: Raymond D. Symens, Lyle H. Howard, Surendra Kumar Mishra, Thomas William Polkinghorn
  • Patent number: 6808695
    Abstract: A process for purifying solid crude aluminum chloride, containing iron impurities, includes the steps of mixing iron with the crude aluminum chloride and reactively subliming and desubliming the mixture.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: October 26, 2004
    Assignee: Toth Aluminum Corporation
    Inventor: Gervase M. Chaplin
  • Patent number: 6803182
    Abstract: A gallium halide coordination complex is described of the formula (I): [RxNHy]3GaX6 wherein R represents a lower alkyl group of from 1-3 carbon atoms; X is Cl, Br, or I; and x is from 1-3, y is from 1-3, and x+y=4. In a further aspect, a process for incorporating gallium in a silver halide emulsion is described comprising precipitating silver halide emulsion grains in a reaction vessel, wherein a gallium halide coordination complex of the formula (I) is introduced into the reaction vessel or formed in situ during precipitation of the silver halide grains. The isolation, or in-situ preparation, of a six coordinate gallium halide complex of Formula (I) in accordance with the invention has been found to enable the preparation of gallium doped silver halide emulsions with improved speed/grain performance.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: October 12, 2004
    Assignee: Eastman Kodak Company
    Inventor: Tommie L. Royster, Jr.
  • Patent number: 6733738
    Abstract: The invention relates to a method and a device for the production of NADCl4 in which D is aluminium or iron, where, in a first reaction step, a melt of aluminium or iron is reacted with chlorine gas to give gaseous metal halide, and this is subsequently reacted, in a second reaction step, with solid sodium chloride to give the corresponding compound and is separated off as a melt.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 11, 2004
    Assignee: Merck Patent GmbH
    Inventor: Hans Leonhard Ohrem
  • Publication number: 20040047791
    Abstract: A method for the production of inorganic aluminum substances and amorphous silica from aluminum oxide containing ores, comprising: (a) leaching of said ores with fluorosilicic acid to obtain aluminum fluosilicate solution; (b) filtering said leached solution from insoluble materials; and (c) washing said insoluble materials.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 11, 2004
    Inventors: Simcha Harel, Lev Shapira
  • Patent number: 6602482
    Abstract: A process for separating metal chlorides from a suspension of metal chlorides in chlorosilanes, in which the suspension is filtered under pressure in the absence of air and moisture forming a filter cake, which is granulated and passed to a dissolution zone where the metal chlorides are dissolved to form an aqueous metal chloride solution. The invention also relates to a filtration and dissolution apparatus for this process, and to an apparatus for introducing the crude reaction gas into a circulated suspension of metal chlorides in chlorosilanes, thus producing a feedstock for the process.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: August 5, 2003
    Assignees: Degussa AG, Wacker-Chemie GmbH
    Inventors: Bernd Kohler, Eberhard Schulz, Bernd Vendt
  • Patent number: 6507020
    Abstract: A mass spectrometry apparatus is provided with an emitter for emitting metal ions, a reaction chamber where the detected gas is introduced and ionized by the metal ions, an aperture for guiding molecules of the ionized detected gas, and a mass spectrometer for measuring the guided molecules. The metal ions emitted from the emitter are caused to fly to the reaction chamber to ionize said detected gas. The detected gas is a halide compound. Further provision is made of a sample gas source for feeding a halide compound to the reaction chamber and an N2 gas source for feeding to the reaction chamber a gas (N2 etc.) to which the metal ions attach less easily than to the halide compound. It is therefore made possible to apply cation attachment of the Fujii system to mass spectrometry of a halide compound and enable precise measurement of fluoride compounds etc. having a large impact on global warming.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: January 14, 2003
    Assignee: Anelva Corporation
    Inventors: Yoshiro Shiokawa, Toshihiro Fujii
  • Publication number: 20020125589
    Abstract: An infrared optical element, and methods for its manufacture. The optical element is made by cold working an ingot of a soft crystalline ionic solid such as silver halide or a thallium halide that preferably includes at most one part per million of metallic impurities and at most ten parts per million total impurities. Preferably, the Knoop hardness of the ionic solid is at most about 20, and the elongation ratio of the ionic solid is at least 10% at a temperature of no more than 200° C. The optical element maybe a bulk element or a surface element. The optical element may be a refractive element, a diffractive element or a hybrid element. One such element is a flat sensor for attenuated total reflection spectroscopy. In one embodiment of the sensor, a thin layer of silver halide or thallium halide is formed by diffusion or deposition on the surface of a substrate having a lower index of refraction than the layer.
    Type: Application
    Filed: May 6, 2002
    Publication date: September 12, 2002
    Inventor: Abraham Katzir
  • Patent number: 6436362
    Abstract: Process for preparing aluminum fluoride which comprises fluorination of alumina with gaseous HF, characterized in that the alumina is fluorinated with HF at an initial temperature lower than 300° C., the temperature is raised with a temperature gradient ≦100° C./hour up to the final temperature >320° C. and <450° C., fluorination is continued at the final temperature until feeding a HF molar amount at least equal to the stoichiometric with respect to the alumina, fluorination being carried out until a fluorinated alumina with a fluorine content not lower than 95% of the stoichiometric is obtained.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: August 20, 2002
    Assignee: Ausimont S.p.A.
    Inventor: Paolo Cuzzato
  • Patent number: 6432392
    Abstract: An antiperspirant active salt made by treating an aluminum salt of general formula; Al2(OH)6−aXa wherein X is Cl, Br or I, and a is 0.3 to 4.0, with an effective amount of a phosphorus containing material, and ageing the salt.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: August 13, 2002
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Alexander Thomas Ashcroft, Philippa Margaret Smith
  • Publication number: 20020085973
    Abstract: The present invention relates to a process for preparing metal nitride thin film by chemical deposition employing amine-adduct single-source precursor at low temperatures. In accordance with the present invention, the chemical deposition is performed at low temperatures with a relatively cheap silicon substrate instead of expensive sapphire, which makes possible the economical preparation of the nitride thin film. Furthermore, since the invented process can eliminate the problems confronted in the post electrode deposition caused by insulating substrate, it can be practically applied to the development of new materials and the preparation of multi-layer thin film.
    Type: Application
    Filed: September 20, 2001
    Publication date: July 4, 2002
    Inventor: Joon Taik Park
  • Patent number: 6187280
    Abstract: Process for preparing aluminum fluoride having an high surface area and high pore volume comprising the fluorination with HF of alumina having surface area of at least 150 m2/g and pore volume not lower than 0.3 cc/g, said alumina comprising from about 0.5 up to about 15% by weight of silicon oxide.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: February 13, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Letanzio Bragante, Francesco Rinaldi
  • Patent number: 6153164
    Abstract: A method for producing uranium oxide includes combining uranium tetrafluoride and a phyllosilicate mineral containing a solid oxidizing agent within the mineral's structure having a lower thermodynamic stability than the uranium oxide; heating the combination below the vapor point of the uranium tetrafluoride to sufficiently react the uranium tetrafluoride and the oxidizing agent to produce uranium oxide and a non-radioactive fluorine compound; and removing the fluorine compound.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: November 28, 2000
    Assignee: Starmet Corporation
    Inventors: John B. Bulko, Bridget M. Smyser
  • Patent number: 6096281
    Abstract: A method for producing uranium oxide includes combining uranium oxyfluoride and a solid oxidizing agent having a lower thermodynamic stability than the uranium oxide after "oxide"; heating the combination below the vapor point of the uranium oxyfluoride to sufficiently react the uranium oxyfluoride and the oxidizing agent to produce uranium oxide and a non-radioactive fluorine compound; and removing the fluorine compound after "compound".
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: August 1, 2000
    Assignee: Starmet Corporation
    Inventors: John B. Bulko, Bridget M. Smyser
  • Patent number: 6004519
    Abstract: The recovery of aluminum chloride from deactivated alkylation catalyst complexes by hydrogenation using hydrogen gas and an aluminum catalyst is disclosed. Using aluminum to catalyze the hydrogenation allows the reaction to proceed at a lower temperature and pressure while reducing the amount of hydrogen chloride present in the reactor thus reducing the corrosiveness and cost of the aluminum chloride recovery. Methods for batch, batchwise continuous, and continuous aluminum chloride recovery are disclosed.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: December 21, 1999
    Assignee: Kerr-McGee Corporation
    Inventors: Elliott P. Doane, Jim Yuen-Fong Low, Larry G. Sherman, William A. Yuill
  • Patent number: 5918106
    Abstract: A method for producing uranium oxide includes combining uranium tetrafluoride and a solid oxidizing agent having a lower thermodynamic stability than the uranium oxide; heating the combination below the vapor point of the uranium tetrafluoride to sufficiently react the uranium tetrafluoride and the oxidizing agent to produce uranium oxide and a non-radioactive fluorine compound; and removing the fluorine compound.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: June 29, 1999
    Assignee: Starmet Corp.
    Inventors: John B. Bulko, William T. Nachtrab
  • Patent number: 5861133
    Abstract: A synthetic chalcoalumite compound represented by the formula (1)(Zn.sub.a-x.sup.2+ M.sub.x.sup.2+)Al.sub.4.sup.3+ (OH).sub.b (A.sup.n-).sub.c.mH.sub.2 O (1)whereinM.sup.2+ represents at least one of Cu, Ni, Co and Mg;a represents 0.3<a<2.0;x represents 0.ltoreq.x<1.0;b represents 10<b<14;A.sup.n- represents one or two selected from SO.sub.4.sup.2-, HPO.sub.4.sup.2-, CO.sub.3.sup.2-, CrO.sub.4.sup.2-, SiO.sub.3.sup.2-, NO.sub.3.sup.2-, OH.sup.- and Cl.sup.- ;c represents 0.4<c<2.0 andm represents a number of 1 to 4,and a process for the production thereof.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: January 19, 1999
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Akira Okada, Kanako Shimizu, Kazushige Oda
  • Patent number: 5824227
    Abstract: A process for removing dissolved fluorides from an aqueous stream using at least two reactors wherein the dissolved fluoride containing aqueous feed and an unreacted aluminum containing sludge are combined in the first reactor to give a first reactor admixture after which the first reactor effluent stream is directed to the second reactor and therein combined with fresh alum and fresh sodium aluminate to give a second reactor admixture comprising a reduced fluoride aqueous solution and a partially reacted aluminum containing sludge and thereafter recovering the reduced fluoride aqueous solution and recycling at least a portion of the aluminum containing sludge to the first reactor.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: October 20, 1998
    Assignee: WMX Technologies, Inc.
    Inventors: Daniel A. Cargnel, Mark K. Crescenzi
  • Patent number: 5776496
    Abstract: This invention relates to the preparation, composition and applications of suspensions of ultra-small, substantially non-aggregated, non-crystalline particles of predetermined uniform size which, when suspended in a liquid, contain entrapped gaseous bubbles. These gaseous bubble particles are prepared by simultaneous co-precipitation of two compounds. In accordance with the present invention, the two compounds chosen for co-precipitation are such that one is substantially more soluble than the other in a given vehicle. When this vehicle is used for washing the co-precipitated particles, part of the soluble material is dissolved leaving a porous matrix. The porous particles then are dried and stored. The porous particles, which can be resuspended immediately prior to use, contain entrapped gas in the evacuated crevices or pores which is not displaced for a period of time because of surface tension of the suspending vehicle.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: July 7, 1998
    Assignee: University of Rochester
    Inventors: Michael R. Violante, Kevin J. Parker
  • Patent number: 5741522
    Abstract: This invention relates to the preparation, composition and applications of suspensions of ultra-small, substantially non-aggregated, non-crystalline particles of predetermined uniform size which, when suspended in a liquid, contain entrapped gaseous bubbles. These gaseous bubble particles are prepared by simultaneous co-precipitation of two compounds. In accordance with the present invention, the two compounds chosen for co-precipitation are such that one is substantially more soluble than the other in a given vehicle. When this vehicle is used for washing the co-precipitated particles, part of the soluble material is dissolved leaving a porous matrix. The porous particles then are dried and stored. The porous particles, which can be resuspended immediately prior to use, contain entrapped gas in the evacuated crevices or pores which is not displaced for a period of time because of surface tension of the suspending vehicle.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 21, 1998
    Assignee: University of Rochester
    Inventors: Michael R. Violante, Kevin J. Parker
  • Patent number: 5725836
    Abstract: A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are described. The method involves contacting a solution containing material to be processed with a species selected to precipitate the material and selected so as to be miscible with the solvent system of the solution. After the material is precipitated, the material may be washed with the precipitating species until it is substantially free of solvent system. Then, the precipitating species containing the material precipitate is taken above its critical point, and the supercritical fluid is exhausted above its critical temperature. Alternately, a separate isolating species is introduced to displace the precipitating species, or the precipitating species/solvent system mixture. The isolating species then is taken above its critical point, and exhausted above its critical temperature.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: March 10, 1998
    Assignees: CF Technologies, Inc., The Gillette Company
    Inventors: Stephane Fabrice Rouanet, William Edward McGovern, Wanging Cao, John M. Moses, Angel L. Carrillo, Irving M. Klotz
  • Patent number: 5683669
    Abstract: In the preparation of metal chlorides from their elements to be used as additives in processes of making titanium dioxide by the chloride process, a titanium tetrachloride stream is directed to sweep over the lined inner wall of a metal chloride generator to act as a protective film, which considerably increases the life of the generator. Furthermore, the titanium tetrachloride is further heated, which is highly desirable in the chloride process. When the titanium tetrachloride is optionally conducted in advance through ducts in the lining of the inner walls of the metal chloride generator, its temperature can be further raised.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: November 4, 1997
    Assignee: Kronos Inc.
    Inventors: Achim Hartmann, Herman Trub
  • Patent number: 5625054
    Abstract: The present invention relates to fluorinated surfaces which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the DNA from the surface. Generally, the hydrophilic and electropositive characteristics are expressed at the fluorinated surface. Preferred fluorinated surfaces of the present invention include fluorinated Al(OH).sub.3, fluorinated SiO.sub.2 and fluorinated Celite. The fluorinated surfaces of the present invention are particularly useful in processes for purification of DNA from other cellular components. In these processes, a suspension of cellular components is placed in contact with the fluorinated surface, the fluorinated surface is washed to remove all cellular components other than DNA which are bound to the surface, and the bound DNA is eluted from the surface. Lower concentrations of chaotrope in the binding buffer are needed to bind DNA to the fluorinated surfaces.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: April 29, 1997
    Assignee: Becton Dickinson and Company
    Inventors: Daniel L. Woodard, Adriann J. Howard, James A. Down
  • Patent number: 5460795
    Abstract: New crystalline phases of the fluoroaluminum compound AlF.sub.k (OH).sub.3-k and processes for their preparation and conversion to conventional phases, as well as isolation of solid HAlF.sub.4 are disclosed.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: October 24, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David R. Corbin, Norman Herron, David L. Thorn