Binary Fluorine Containing Compound Patents (Class 423/489)
  • Patent number: 11795138
    Abstract: The invention relates to a use of a fluorination gas, and the elemental fluorine (F2) is present in a high concentration, for example, in a concentration of elemental fluorine (F2), especially of equal to much higher than 15 or even 20% by volume, and to a process for the manufacture of a fluorinated compound by direct fluorination employing a fluorination gas, wherein the elemental fluorine (F2) is present in a high concentration. The process of the invention is directed to the manufacture of a fluorinated compound, for the exception of fluorinated benzene, by direct fluorination. Especially the invention is of interest in the preparation of fluorinated organic compounds, final products and as well intermediates, for usage in agro-, pharma-, electronics-, catalyst, solvent and other functional chemical applications. The fluorination process of the invention may be performed batch-wise or in a continuous manner.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: October 24, 2023
    Inventors: Changyue Zhou, Hongjun Du, Wenting Wu
  • Patent number: 11728490
    Abstract: The present disclosure provides an electrochemical cell that includes an electrically conductive material layer, a precursor material disposed on or adjacent to a first surface of the electrically conductive material layer, and an electroactive material layer disposed on or adjacent to the precursor material. In certain variations, the precursor material forms a continuous layer and a solid-electrolyte interface layer is disposed on or adjacent to an exposed surface of the electroactive material layer. In other variations, the precursor material forms a plurality of distinct precursor structures disposed on the first surface of the electrically conductive material layer in a predetermined pattern, such that at least a portion of each distinct precursor structure is unobstructed by the electroactive material layer. The distinct precursor structures are configured to form surface structures that chemically attach the solid-electrolyte interface layer and the electrically conductive material layer.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: August 15, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Robert D. Schmidt, Gayatri V. Dadheech
  • Patent number: 11697594
    Abstract: A method for recycling spent carbon cathode of aluminum electrolysis includes the following steps: (1) crushing and sieving spent carbon cathode, to obtain carbon particles; (2) mixing the carbon particles with a sulfuric acid solution, to obtain a slurry A, and then performing pressure leaching, to obtain a slurry B; (3) evaporating and concentrating the slurry B until a mass percentage of water is lower than 8%, to obtain a slurry C; (4) adding concentrated sulfuric acid to the slurry C to obtain a slurry D, then roasting the slurry D at 150-300° C. for 0.5-10 h, and then roasting at 300-600° C. for 0.5-8 h, to obtain the roasted carbon; and calcining the roasted carbon at a high temperature, to obtain the purified carbon, or mixing the roasted carbon with a leaching agent, and performing leaching, filtering, and washing, to obtain the purified carbon.
    Type: Grant
    Filed: January 16, 2021
    Date of Patent: July 11, 2023
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Yanqing Lai, Zhongliang Tian, Kai Yang, Yifan Li, Peiyu Gong, Bo Hong, Jie Li
  • Patent number: 11075076
    Abstract: A method for manufacturing a semiconductor device is provided. In the method, impurities contained in a first layer formed on a substrate are removed by heating the first layer. On the first layer, a second layer is formed containing a component that forms a substance that is able to vaporize by reacting with the impurities.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: July 27, 2021
    Assignee: Tokyo Electron Limited
    Inventors: Takahito Umehara, Masato Koakutsu
  • Publication number: 20150034500
    Abstract: A metal organic framework (MOF) includes a coordination product of a metal ion and an at least bidentate organic ligand, where the metal ion and the organic ligand are selected to provide a deliverable adsorption capacity of at least 70 g/l for an electronic gas. A porous organic polymer (POP) includes polymerization product from at least a plurality of organic monomers, where the organic monomers are selected to provide a deliverable adsorption capacity of at least 70 g/l for an electronic gas.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 5, 2015
    Inventors: Han Sung KIM, Mitchell Hugh WESTON, Patrick FULLER, Paul Wai-Man SIU
  • Publication number: 20140376351
    Abstract: A device including a near field transducer, the near field transducer including gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof and barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 25, 2014
    Inventors: Yuhang Cheng, Tong Zhao, Michael C. Kautzky, Ed F. Rejda, Kurt W. Wierman, Scott Franzen, Sethuraman Jayashankar, Sarbeswar Sahoo, Jie Gong, Michael Allen Seigler
  • Patent number: 8911631
    Abstract: According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 ?m with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: December 16, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
  • Publication number: 20140332785
    Abstract: A method of preparing an organic light-emitting device having excellent sealing characteristics against external environment and flexibility.
    Type: Application
    Filed: July 25, 2014
    Publication date: November 13, 2014
    Inventor: Jin-Woo Park
  • Patent number: 8867692
    Abstract: Systems for treating material are provided that can include a vessel defining a volume, at least one conduit coupled to the vessel and in fluid communication with the vessel, material within the vessel, and NF3 material within the conduit. Methods for fluorinating material are provided that can include exposing the material to NF3 to fluorinate at least a portion of the material. Methods for separating components of material are also provided that can include exposing the material to NF3 to at least partially fluorinate a portion of the material, and separating at least one fluorinated component of the fluorinated portion from the material. The materials exposed to the NF3 material can include but are not limited to one or more of U, Ru, Rh, Mo, Tc, Np, Pu, Sb, Ag, Am, Sn, Zr, Cs, Th, and/or Rb.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: October 21, 2014
    Assignee: Battelle Memorial Institute
    Inventors: Randall D. Scheele, Bruce K. McNamara
  • Publication number: 20140284526
    Abstract: The present invention is directed to processing techniques and systems of metal fluoride based material, including but not limited to nickel difluoride, copper difluoride, manganese fluoride, chromium fluoride, bismuth fluoride, iron trifluoride, iron difluoride, iron oxyfluoride, metal doped iron fluorides, e.g., FexM1-xFy (M=metals, which can be Co, Ni, Cu, Cr, Mn, Bi and Ti) materials. An exemplary implementation involves mixing a first compound comprising a metal material, nitrogen, and oxygen to a second compound comprising hydrogen fluoride. The mixed compound is milled to form metal fluoride precursor and a certain byproduct. The byproduct is removed, and the metal fluoride precursor is treated to form iron trifluoride product. There are other embodiments as well.
    Type: Application
    Filed: March 21, 2014
    Publication date: September 25, 2014
    Applicant: QuantumScape Corporation
    Inventor: Jon Shan
  • Patent number: 8778291
    Abstract: A process for treating a zirconia-based material comprises reacting, in a reaction step, the zirconia-based material with ammonium bifluoride, NH4F.HF. An ammonium fluorozirconic compound is produced.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 15, 2014
    Assignee: The South African Nuclear Energy Corporation Limited
    Inventors: Johannes Theodorus Nel, Wilhelmina Du Plessis, Philippus Lodewyk Crouse, Nelius Dempers Retief
  • Patent number: 8771626
    Abstract: This invention relates to a process for purifying at least one of perfluoromethane and nitrogen trifluoride from a mixture thereof using an ionic liquid. The process may be performed by a technique such as extractive distillation or absorption wherein at least one ionic liquid is used as the entraining agent or absorbent, respectively.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: July 8, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark Brandon Shiflett, Akimichi Yokozeki
  • 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
  • Patent number: 8628644
    Abstract: The present invention relates to a process for separating close-boiling and azeotropic components of mixtures, wherein said mixtures contain at least one hydrofluorocarbon compound, using at least one ionic liquid.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: January 14, 2014
    Assignee: E I du Pont Nemours and Company
    Inventors: Mark B. Shiflett, Akimichi Yokozeki
  • 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
  • Patent number: 8454925
    Abstract: In a non-aqueous electrolyte secondary battery, in order to adjust a cathode active material in which guest cation such as Na and Li is included, alkaline metal fluoride which is expressed by a general formula AF and transition metal fluoride which is expressed by a formula M? F2 are subjected to a mechanical milling process to produce metal fluoride compound AM? F3. The mechanical milling process desirably uses a planetary ball mill.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: June 4, 2013
    Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu University, National University Corporation
    Inventors: Shigeto Okada, Manabu Nishijima, Takayuki Doi, Jun-ichi Yamaki, Irina D. Gocheva, Toshiyasu Kiyabu
  • Publication number: 20130136686
    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: Application
    Filed: January 28, 2013
    Publication date: May 30, 2013
    Applicant: MEMC ELECTRONIC MATERIALS, INC.
    Inventor: MEMC ELECTRONIC MATERIALS, INC.
  • 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
  • Publication number: 20130048924
    Abstract: The described invention provides compositions related to an electronically insulating amorphous or nanocrystalline mixed ionic conductor composition comprising a metal fluoride composite to which an electrical potential is applied to form 1) a negative electrode, and 2) a positive electrode, wherein the negative electrode and positive electrode are formed in situ.
    Type: Application
    Filed: November 9, 2010
    Publication date: February 28, 2013
    Inventors: Glenn G. Amatucci, Anna Halajko, Fadwa Badway
  • Publication number: 20130011329
    Abstract: A process for treating a zirconia-based material comprises reacting, in a reaction step, the zirconia-based material with ammonium bifluoride, NH4F.HF. An ammonium fluorozirconic compound is produced.
    Type: Application
    Filed: July 29, 2010
    Publication date: January 10, 2013
    Inventors: Willem Liebenberg Retief, Nelius Dempers Refief, Johannes Theodorus Nel, Wilhelmina Du Plessis, Philippus Lodewyk Crouse
  • Publication number: 20120288435
    Abstract: According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 ?m with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 15, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
  • Patent number: 8231855
    Abstract: Disclosed is a method for an energy-efficient improvement in the production of sulfur hexafluoride, and eliminates the generation of other byproducts. The process is an oxidative fluorination of sulfur tetrafluoride by CoF3/F2, where CoF3 is solid stationary phase that can be regenerated.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: July 31, 2012
    Inventor: Bamidele A. Omotowa
  • Publication number: 20120172210
    Abstract: The invention aims at providing a platinum black material, without using an expensive and rare material, which is excellent in CO poisoning inhibiting effect, H2S poisoning inhibiting effect, SO4 poisoning inhibiting effect and HCHO poisoning inhibiting effect, and a method for fluorinating platinum black. The platinum black material is characterized by fluorine adsorbed on its surface. The method for fluorinating platinum black is characterized by allowing platinum black to stand in a mixed gas atmosphere of n inert gas and fluorine in a low-pressure chamber to make fluorine adsorbed on the surface of the platinum black.
    Type: Application
    Filed: July 6, 2011
    Publication date: July 5, 2012
    Applicants: STELLA CHEMIFA CORPORATION
    Inventors: Masayoshi ISHIDA, Shinji HASHIGUCHI, Yasutaka TASHIRO
  • Publication number: 20120141407
    Abstract: Compositions for the use of sewage or wastewater treatment, controlling odors or a combination thereof are disclosed, wherein the composition comprises at least one iron-based compound. Furthermore, methods of reducing the odors in a sewage or wastewater system are disclosed that include: adding a composition comprising at least one iron-based compound to a sewage or wastewater system. As used herein, the phrase “at least one iron-based compound” includes ferrous chloride, ferric chloride, ferrous sulfate, ferrate, polyferric sulfate, Ferix-3 (Fe2(SO4)3H2O) or a combination thereof.
    Type: Application
    Filed: September 28, 2011
    Publication date: June 7, 2012
    Inventors: Carla Dillon, Brian Reed, Talebi Mahin
  • Publication number: 20110287940
    Abstract: An optical element is disclosed which includes transparent superconductor material.
    Type: Application
    Filed: April 9, 2009
    Publication date: November 24, 2011
    Inventor: Daniel Brandt
  • Patent number: 8057779
    Abstract: There is provided a process for the production of iodine pentafluoride which avoids the problems of the production process of iodine pentafluoride of the prior art as much as possible, and which carries out the reaction of fluorine and iodine moderately, so that iodine pentafluoride is produced more safely and more productively. In the process for the production of iodine pentafluoride by reacting fluorine and iodine, fluorine is supplied to the gas phase 14 which is adjacent to the liquid phase 12 of iodine pentafluoride which contains iodine.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: November 15, 2011
    Assignee: Daikin Industries, Ltd.
    Inventors: Hitoshi Yoshimi, Tatsuya Hirata, Tomohiro Isogai, Takashi Shibanuma
  • Publication number: 20110158896
    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: Application
    Filed: December 15, 2010
    Publication date: June 30, 2011
    Applicant: MEMC ELECTRONIC MATERIALS, INC.
    Inventors: Puneet Gupta, Satish Bhusarapu
  • Patent number: 7968074
    Abstract: The method produces low-stress, large-volume crystals with low birefringence and uniform index of refraction. The method includes growing the crystal with larger than desired dimensions including diameter and height from a melt; cooling and tempering the crystal with the larger than desired dimensions and after the cooling and tempering removing edge regions of the crystal with the larger than desired dimensions so that a diameter reduction and a height reduction of at least five percent occurs respectively and so that the crystal has the desired dimensions of diameter and height. No further tempering takes place after removing of the edge regions.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: June 28, 2011
    Assignee: Hellma Materials GmbH & Co. KG
    Inventors: Lutz Parthier, Joerg Staeblein, Gunther Wehrhan, Christian Kusch
  • Publication number: 20110135555
    Abstract: Disclosed is a process for producing a fluoride gas that can produces fluoride gases such as BF3, SiF4, GeF4, PF5 or AsF5 at a reduced production cost in a simple manner. The process is characterized in that a compound containing an atom, which, together with a fluorine atom, can form a polyatomic ion, is added to a hydrogen fluoride solution to produce the polyatomic ion in a hydrogen fluoride solution and to evolve a fluoride gas comprising the fluorine atom and the atom that, together with the fluorine atom, can form a polyatomic ion.
    Type: Application
    Filed: June 8, 2009
    Publication date: June 9, 2011
    Applicant: STELLA CHEMIFA CORPORATION
    Inventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
  • Patent number: 7947392
    Abstract: The present invention relates to primary and secondary electrochemical energy storage systems, particularly to such systems as battery cells, which use materials that take up and release ions as a means of storing and supplying electrical energy. The present positive electrode composition comprises a nanocrystalline bismuth fluoride compound, which comprises Bi+3, and has a maximum energy density of 7170 Wh/l?1.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: May 24, 2011
    Inventors: Glenn G. Amatucci, Fadwa Badway, Mathieu Bervas
  • Publication number: 20110110844
    Abstract: Manganese tetrafluoride is prepared by a reaction between manganese difluoride or manganese trifluoride particles and elemental fluorine. During the reaction, surfaces of the particles are rendered fresh, e.g. by mechanical impact on the particles. Thereby, also agglomeration, sintering or vitrification of the particles is prevented. The impact is not so intensive that the particles would be crushed.
    Type: Application
    Filed: December 9, 2008
    Publication date: May 12, 2011
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Ulrich Seseke-Koyro, Placido Garcia-Juan, Stefan Palsherm, Alf Schulz
  • 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
  • Publication number: 20110024683
    Abstract: For a continuous process for preparing rare-earth doped Group 2 or Group 3 metal fluoride nanoparticles comprising a confluence of feed streams of reagents, a method is provided for controlling particle size by adjustment in the flow rate of the streams.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 3, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: PAUL GREGORY BEKIARIAN
  • Patent number: 7875752
    Abstract: The present invention provides a method for conducting a chemical reaction in a non-fluorous medium using a fluorous compound in the presence of a solid adsorbant containing a fluorous domain and at least one chemical reactant, comprising contacting the fluorous compound and at least one chemical reactant under conditions that form at least one product.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: January 25, 2011
    Assignee: Fluorous Technologies Incorporated
    Inventors: John Andrew Gladysz, Marc Oliver Wende, Dennis P. Curran
  • Publication number: 20100322837
    Abstract: Embodiments are described that generally relate to the storage and release of a gas using piezoelectric materials.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Inventor: Seth Adrian Miller
  • 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: 20100278685
    Abstract: A method for the production of titanium trifluoride from a titanium-containing material, includes the steps of producing a fluoride solution of Ti(IV) from the titanium-containing material and reducing the Ti(IV) in the solution with a transition metal or an alloy of the transition metal. The transition metal is selected from manganese, iron, cobalt, nickel and zinc. An ammonium containing salt and either ammonia or ammonium fluoride are added to the resulting solution containing Ti(III) to produce a precipitate, and the precipitate is pyrolysed to produce titanium trifluoride.
    Type: Application
    Filed: December 29, 2008
    Publication date: November 4, 2010
    Inventor: Gerard Pretorius
  • Patent number: 7740820
    Abstract: A method of producing a fluoroapatite is provided. The method comprises preparing a slurry containing a hydroxyapatite which has at least one hydroxyl group, preparing a hydrogen fluoride-containing solution containing a hydrogen fluoride, mixing the hydrogen fluoride-containing solution with the slurry to obtain a mixture to thereby adjust a pH of the mixture in the range of 2.5 to 5, and reacting the hydroxyapatite with the hydrogen fluoride in the mixture in a state that the pH of the mixture is adjusted within the above range to thereby obtain the fluoroapatite by substituting the at least one hydroxyl group of the hydroxyapatite with fluorine atom of the hydrogen fluoride. The method can produce the fluoroapatite having improved acid resistance by reducing an impurity, such as ammonia, derived from a raw material to a low or very low level. Further, a fluoroapatite having high acid resistance is also provided. Furthermore, an adsorption apparatus using such a fluoroapatite is provided.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: June 22, 2010
    Assignee: Hoya Corporation
    Inventors: Tsuyoshi Ishikawa, Yoshiyuki Ogawara, Tomohiko Yoshitake, Yukiko Murakami
  • Publication number: 20100104497
    Abstract: Disclosed herein are a method of preparing tungsten hexafluoride (WF6) gas by fluidizing tungsten powder with inert gas in a reactor and fluorinating the fluidized tungsten powder with fluorine (F2) or nitrogen trifluoride (NF3) gas, and an apparatus (including fluidized bed reactor) for carrying out the method. The fluidized bed reactor shows a reaction efficiency of higher than 99% when being used to prepare tungsten hexafluoride.
    Type: Application
    Filed: February 19, 2009
    Publication date: April 29, 2010
    Applicant: FOOSUNG Co., Ltd.
    Inventors: Hyang Ja JANG, Jong Yool Yang, Chul Ho Kim, Young Gu Cho, Jung Eun Lee, Yuichi Ilkubo
  • Patent number: 7691351
    Abstract: The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: April 6, 2010
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Vithal Revankar, Jameel Ibrahim
  • Patent number: 7666379
    Abstract: A process and apparatus is provided for the purification of binary halide fluid. The process and apparatus purifies the binary halide fluid by selectively removing Bronsted acid impurities and/or volatile oxygen containing impurities present in the binary halide. A regenerable adsorbent polymer is utilized to remove the Bronsted acid impurities from the binary halide fluid and a volatile oxide adsorbent having a specific adsorption capacity for the volatile oxide impurity is utilized to remove the volatile oxide from the binary halide when in gaseous form.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: February 23, 2010
    Assignee: Voltaix, Inc.
    Inventors: Leisl Dukhedin-Lalla, German Shekk, John P. de Neufville, Michael Pikulin
  • Patent number: 7625502
    Abstract: Crystalline scintillator materials comprising nano-scale particles of metal halides are provided. The nano-scale particles are less than 100 nm in size. Methods are provided for preparing the particles. In these methods, ionic liquids are used in place of water to allow precipitation of the final product. In one method, the metal precursors and halide salts are dissolved in separate ionic liquids to form solutions, which are then combined to form the nano-crystalline end product. In the other methods, micro-emulsions are formed using ionic liquids to control particle size.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 1, 2009
    Assignee: General Electric Company
    Inventors: Brent Allen Clothier, Sergio Paulo Martins Loureiro, Alok Srivastava, Venkat Subramaniam Venkataramani
  • 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: 7524480
    Abstract: Disclosed is a process for producing manganese fluoride, comprising a step (1) of allowing a manganese compound such as MnF2 having been dried at a temperature of not lower than 100° C. to react with a fluorinating agent such as F2 at a temperature of 50 to 250° C. and a step (2) of further allowing a product obtained in the step (1) to react with a fluorinating agent at a temperature of 250 to 450° C. According to this process, manganese fluoride capable of generating a fluorine gas can be easily and inexpensively produced on a mass scale under the conditions of low temperature and low pressure without going through steps of sublimation and solidification.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: April 28, 2009
    Assignee: Show A Denko K.K.
    Inventors: Masakazu Oka, Naoki Asaga, Tomoyuki Fukuyo
  • Publication number: 20090074646
    Abstract: The efficiency of an etching process may be increased in various ways, and the cost of an etching process may be decreased. Unused etchant may be isolated and recirculated during the etching process. Etching byproducts may be collected and removed from the etching system during the etching process. Components of the etchant may be isolated and used to general additional etchant. Either or both of the etchant or the layers being etched may also be optimized for a particular etching process.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventors: Teruo Sasagawa, Xiaoming Yan
  • Publication number: 20090068086
    Abstract: Apparatus and methods for purifying WF6 gas by using carbonaceous materials are described. The apparatus and methods are particularly useful for removing high volatility impurities and for removing transition metal impurities, particularly chromium and molybdenum.
    Type: Application
    Filed: September 7, 2007
    Publication date: March 12, 2009
    Inventors: Richard Allen Hogle, Ce Ma, Dennis Precourt, Walter Hugh Whitlock
  • Publication number: 20080247932
    Abstract: A method for making colloidal nanocrystals includes the following steps: dissolving a nanocrystal powder in an organic solvent, and achieving a solution A of a concentration of 1-30 mg/ml; dissolving a surfactant in water, and achieving a solution B of a concentration of 0.002-0.05 mmol/ml; mixing the solution A and the solution B in a volume ratio of 1: (5-30), and achieving a mixture; stirring and emulsifying the mixture, until an emulsion C is achieved; removing the organic solvent from the emulsion C, and achieving a deposit; then washing the deposit with deionized water, and achieving colloidal nanocrystals. The present method for making colloidal nanocrystals is economical and timesaving, and has a low toxicity associated therewith. Thus, the method is suitable for industrial mass production. The colloidal nanocrystals made by the present method have a readily controllable size, a narrow size distribution, and good configuration.
    Type: Application
    Filed: December 14, 2007
    Publication date: October 9, 2008
    Applicants: Tsinghua University, HON HAI Precision Industry CO., LTD.
    Inventors: Ya-Dong Li, Feng Bai, Ding-Sheng Wang, Zi-Yang Huo, Wei Chen, Li-Ping Liu
  • 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: 7404943
    Abstract: Methods of enhancing the solubility of a fluorinated compound in an organic solvent are provided. In one embodiment, carbon dioxide gas pressure is applied to the solvent at a pressure effective to enhance the solubility of the fluorinated compound. The method may further include recrystallizing the fluorinated compound by reducing the pressure of the carbon dioxide gas. Also provided are methods of conducting a reaction using a fluorinated compound in an organic solvent. In one embodiment, the method comprises applying carbon dioxide pressure to an organic solvent comprising at least one substrate and a fluorinated catalyst, in an effective amount to solubilize the catalyst; and permitting the fluorinated catalyst to catalyze the reaction of the substrate to form a product. The catalyst is optionally separated from the reaction product and solvent after the reaction by the release of the pressure.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: July 29, 2008
    Assignees: The Regents of the University of California, Georgia Tech Research Corporation
    Inventors: Charles A. Eckert, Philip G. Jessop, Charles L. Liotta
  • Patent number: 7395823
    Abstract: The present invention relates to a process for production, shipment, and treatment of a NH4F(HF)x feedstock for local production of fluorine and NF3 for semiconductor chamber cleaning without the need for storage of large quantities of dangerous feeds and intermediate products.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: July 8, 2008
    Assignee: The BOC Group, Inc.
    Inventor: Donald P. Satchell, Jr.