|
Match
|
Document |
Document Title |
|
|
7625502 |
Nano-scale metal halide scintillation materials and methods for making same
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...
|
|
|
7592287 |
Method for the preparation of high surface area metal fluorides
The present invention is related to a method for preparing an amorphous metal fluoride of the formula M X+ F X−δ comprising the steps of
a) providing a precursor, whereby the precursor...
|
|
|
7524480 |
Process for producing manganese fluoride
Disclosed is a process for producing manganese fluoride, comprising a step (1) of allowing a manganese compound such as MnF 2 having been dried at a temperature of not lower than 100° C. to react...
|
|
|
7404943 |
Methods for solubilizing and recovering fluorinated compounds
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...
|
|
|
7395823 |
Method and apparatus for local fluorine and nitrogen trifluoride production
The present invention relates to a process for production, shipment, and treatment of a NH 4 F(HF) x feedstock for local production of fluorine and NF 3 for semiconductor chamber cleaning without...
|
|
|
7364715 |
As-grown single crystal of alkaline earth metal fluoride
A single crystal of alkaline earth metal fluoride is produced by a single crystal pulling method, has a straight barrel part diameter of not less than 17 cm, preferably has a straight barrel part...
|
|
|
7261872 |
Method for producing metal fluoride materials
A method of producing nano metal fluoride powders comprising the steps of mixing an aqueous or organic continuous phase comprising at least one metal cation salt with a hydrophilic or organic...
|
|
|
7175823 |
Purification method for producing high purity niobium compound and/or tantalum compound
The present invention provides a method enabling the high purification of a niobium compound and/or tantalum compound in a simplified manner at a low cost. This is accomplished by providing a...
|
|
|
7090809 |
Production of aluminum compounds and silica from ores
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...
|
|
|
7033563 |
Method for reducing oxygen component and carbon component in fluoride
A method for reducing oxygen and carbon components in high-purity fluoride such as calcium fluoride and barium fluoride (a high-purity fluoride that is not limited to calcium fluoride and barium...
|
|
|
6989060 |
Calcium fluoride crystal and method and apparatus for using the same
A calcium fluoride crystal produced in accordance with a method for producing calcium fluoride crystal on the basis of refining a raw material of calcium fluoride and causing crystal growth of the...
|
|
|
6986874 |
Method and apparatus for the production of nitrogen trifluoride
The present invention provides a method and apparatus for producing nitrogen trifluoride. The method comprises contacting a fluorine-containing feed stream with liquid ammonium acid fluoride in a...
|
|
|
6896866 |
Method for purification of tungsten hexafluoride
A method for purifying tungsten hexafluoride of high purity, capable of producing tungsten hexafluoride of higher purity than that of the related art, readily and at a low cost. A method for...
|
|
|
6790419 |
Purification of gaseous inorganic halide
The present invention provides an apparatus and method for the purification of gaseous inorganic halides utilizing a reactive metal and molecular sieves to remove impurities.
|
|
|
6780390 |
Method of producing high purity germanium tetrafluoride
A method of producing high purity germanium tetrafluoride comprising the step of flowing a mixture of inert gas and fluorine gas through a reactor chamber preferably containing germanium powder....
|
|
|
6770253 |
Process for producing silicon tetrafluoride
A process for producing silicon tetrafluoride includes reacting at 250° C. or higher elemental silicon with hydrogen fluoride, thereby producing a gas product containing silicon tetrafluoride....
|
|
|
6649326 |
Photolithographic method and UV transmitting fluoride crystals with minimized spatial dispersion
The invention provides a UV below 200 nm lithography method. The invention includes providing a below 200 nm radiation source for producing <200-nm light, providing a plurality of mixed cubic...
|
|
|
6645451 |
Method of preparing inorganic pentafluorides
The preparation of phosphorus pentafluoride and arsenic pentafluoride by reacting corresponding trihalides with elemental chlorine, bromine or iodine and also with hydrogen fluoride.
|
|
|
6635231 |
Preparation of arsenic pentafluoride
A process for the preparation of high purity arsenic pentafluoride in high yield. The process uses sulfur trioxide or oleum and an excess of hydrogen fluoride to react arsenic acid or arsenic...
|
|
|
6596252 |
Recycling of spent pot linings
A process is described for the treatment of spent pot lining material from electrolyte reduction cells, this spent material having a substantial content of cryolite. The spent material is first...
|
|
|
6524546 |
Process for making calcium chlorides
A new process for producing calcium chloride and other metal halides from the carbonates, bicarbonates, oxides of these metals. The process utilizes the discovery that hydrogen halides, when used...
|
|
|
6507020 |
Halide compound mass spectrometry method and mass spectrometry apparatus
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...
|
|
|
6436362 |
Process for preparing aluminum fluoride
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°...
|
|
|
6342194 |
NF3 treating process
A process for treating NF 3 useful as a dry etching gas and cleaning gas in processes for producing LSI, TFT, and solar cell and in an electron photographic processes. The treating process...
|
|
|
6187280 |
Process for the preparation of aluminum fluoride
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 m 2 /g and pore volume...
|
|
|
6187275 |
Recovery of AlF3 from spent potliner
A method of recovering AlF 3 from spent potliner using an acid digest to form gaseous HF which is converted to hydrofluoric acid and reacted with alumina trihydrate to form AlF 3 .
|
|
|
6153164 |
Method for producing uranium oxide from uranium tetrafluoride and a phyllosilicate mineral
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...
|
|
|
6146601 |
Enrichment of silicon or germanium isotopes
Isotopes of either germanium or silicon are separated by a chemical exchange reaction. Preferably the compound is a hydro halide or halide composition and the donor can be a wide variety of...
|
|
|
6123908 |
Method of treating spent potliner material from aluminum reduction cells
A process of treating spent potliner material from aluminum reduction cells and recovering useful products. In the process of the present invention, spent potliner material is introduced into an...
|
|
|
6103212 |
Method for making UHP tungsten hexafluoride
This invention is directed to a method for producing UHP tungsten hexafluoride by introducing an amount of crude tungsten hexafluoride to an evaporating process for separation into an amount of...
|
|
|
6080210 |
Process for producing aluminum fluoride particles
A process for producing aluminum fluoride particles having a smooth surface, comprising the steps of adding aluminum fluoride seed crystals to a super-saturated solution of aluminium fluoride;...
|
|
|
6060031 |
Method for neutralizing acid gases from laser exhaust
The device and method of the invention provide a neutralizing compound that reacts with acid gases generated in laser exhaust to yield an insoluble non-toxic powder.
|
|
|
6028026 |
Cubic chromium trifluoride and its use for halogenated hydrocarbon processing
This invention provides a crystalline chromium fluoride having a cubic crystal structure (i.e., chromium trifluoride having an X-ray diffraction powder pattern as shown in Table I); and a catalytic...
|
|
|
5910294 |
Abatement of NF.sub.3 with metal oxalates
A process for abating NF 3 by contacting it with a metal oxalate or carbonate.
|
|
|
5830424 |
Method of extracting fluorine from minerals or mineral species
A method of extracting a mineral or mineral species comprising contacting the mineral or mineral species with a leachate solution which contains metal or metalloid ions capable of forming soluble...
|
|
|
5707406 |
Method of manufacturing aluminum fluoride anhydride
A method of manufacturing aluminum fluoride anhydride by means of a wet method. This method is featured in that a seed crystal of AlF 3 .3H 2 O containing not more than 5% of fine particle 40 μm...
|
|
|
5688477 |
Process for reacting dissociated zircon with gaseous hydrogen fluoride
A process for treating dissociated zircon comprises reacting dissociated zircon with gaseous hydrogen fluoride at an elevated reaction temperature. The reaction temperature is controlled to obtain...
|
|
|
5639435 |
Method for producing sulfur hexafluoride
The present invention is directed to methods for preparing sulfur hexafluoride by reacting sulfur tetrafluoride with oxygen. The sulfur tetrafluoride is prepared by contacting molten sulfur with a...
|
|
|
5618503 |
Antimony pentafluoride
A method of preparing antimony pentafluoride comprising converting antimony compounds to hydroxonium fluoroantimonates by reaction of the antimony compounds with fluorinating material, such as...
|
|
|
5587110 |
Composition being capable of imparting conductivity and non-tackifying property, paint using the composition, and roller
A composition which is capable of imparting electrical conductivity and non-tackifying property, comprising (A) a carbon fluoride in which a ratio F/C of fluorine atom to carbon atom is more than...
|
|
|
5554355 |
Oxide slurry for industrial process applications
A method and apparatus for forming a slurry of metal oxide in a mineral or the like (e.g. of magnesium or calcium oxide) and introducing the slurry to an acid neutralization process in a time...
|
|
|
5543120 |
Method for converting asbestos to non-carcinogenic compounds
Hazardous and carcinogenic asbestos waste characterized by a crystalline fibrous structure is transformed into non-carcinogenic, relatively nonhazardous, and non-crystalline solid compounds and...
|
|
|
5470559 |
Recycling of spent pot linings
A process for recycling spent potlining material from aluminum reduction cells contaminated with fluoride and aluminum values. The process comprises first reducing the average particle size of the...
|
|
|
5449503 |
Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids
The present invention provides a process for recovering arsenic acid from a starting mixture comprising sulfuric and arsenic acids and water. In step (a), the starting mixture is treated with a...
|
|
|
5417954 |
Phases of NH.sub.4 AlF.sub.4 and AlF.sub.3
New crystalline phases of the fluoroaluminum compounds NH 4 AlF 4 and AlF 3 and processes for their preparation are disclosed.
|
|
|
5417948 |
Process for cleaning harmful gas
There is disclosed a process for cleaning a gas containing a nitrogen fluoride especially nitrogen trifluoride as the harmful component which comprises bringing the gas into contact with a cleaning...
|
|
|
5411726 |
Process for purifying hydrogen fluoride
The invention relates to a process for purifying industrial anhydrous hydrogen fluoride by means of oxygen difluoride.
|
|
|
5352419 |
Recovery of aluminium and fluoride values from spent pot lining
Process for the recovery of aluminum and fluoride values from spent pot lining materials comprising the steps of calcining spent pot lining material to produce an ash having environmentally...
|
|
|
5348723 |
Synthesis of semiconductor grade tungsten hexafluoride
Semiconductor grade tungsten hexafluoride (WF 6 ) is produced by reacting tungsten metal with a recirculating flow of gaseous WF 6 containing a small concentration of fluorine in a heated reactor....
|
|
|
5346684 |
Recovery of anhydrous hydrogen fluoride from depleted uranium hexafluoride
A method is provided for recovering an anhydrous hydrogen fluoride product from uranium hexafluoride gas by initially reacting the uranium hexafluoride in a primary reactor with steam to produce a...
|