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| Number | Title | Issue Date |
| 7780936 | Process for manufacturing an electrochemical device Process for manufacturing an electrochemical device including a cathode, an anode and at least one electrolyte membrane disposed between the anode and the cathode, wherein at least one of the cathode, the anode and the electrolyte membrane, contains at least a ceram... | 08/24/2010 |
| 7357910 | Method for producing metal oxide nanoparticles Method for producing metal oxide nanoparticles. The method includes generating an aerosol of solid metallic microparticles, generating plasma with a plasma hot zone at a temperature sufficiently high to vaporize the microparticles into metal vapor, and directing the... | 04/15/2008 |
| 7303013 | Method for reducing density of a system fluid and for performing drilling operations using a reduced density system fluid comprising aerogel Methods for reducing density of a system fluid and performing drilling operations using a reduced density system fluid comprising aerogel. ... | 12/04/2007 |
| 7291317 | Method for synthesizing extremely high-temperature melting materials The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as carbides and transition-metal, lanthanide and acti... | 11/06/2007 |
| 7217402 | Apparatus and method for making metal chloride salt product A method of producing metal chlorides is disclosed in which chlorine gas is introduced into liquid Cd. CdCl2 salt is floating on the liquid Cd and as more liquid CdCl2 is formed it separates from the liquid Cd metal and dissolves in the salt. T... | 05/15/2007 |
| 7195745 | Method of preparing a product based on phosphate of thorium and/or actinide(s) The invention relates to a process for the preparation of a product based on a phosphate of at least one element M(IV), for example of thorium and/or of actinide(IV)(s). This process comprises the following stages: a) mixing... | 03/27/2007 |
| 6967011 | Method for synthesizing extremely high-temperature melting materials The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide... | 11/22/2005 |
| 6960311 | Radiation shielding materials and containers incorporating same An improved radiation shielding material and storage systems for radioactive materials incorporating the same. The PYRolytic Uranium Compound (“PYRUC”) shielding material is preferably formed by heat and/or pressure treatment of a precursor material comprising m... | 11/01/2005 |
| 6951634 | Process for recovery of daughter isotopes from a source material The invention includes a method of separating isotopes from a mixture containing at least two isotopes in a solution. A first isotope is precipitated and is collected from the solution. A daughter isotope is generated and collected from the first isotope. The invent... | 10/04/2005 |
| 6830738 | Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions The synthesis of actinide tetraborides including uranium tetraboride (UB4), plutonium tetraboride (PuB4) and thorium tetraboride (ThB4) by a solid-state metathesis reaction are demonstrated. The present method significantly lowers th... | 12/14/2004 |
| 6780394 | High pressure production of perovskites and resulting products A perovskite feedstock (powder or preform) is placed in a high-pressure cell of a high pressure/high temperature (HP/HT) apparatus and subjected to pressures in excess of about 2 kbar and temperatures above about 800° C. for a time adequate to increase the density ... | 08/24/2004 |
| 6719842 | Ammonia for use in manufacture of GaN-type compound semiconductor and method for manufacturing GaN-type compound semiconductor Ammonia for use in the manufacture of a GaN-type compound semiconductor, filled in a charging container 18 such that at least a part of the ammonia is liquid and the liquid phase ammonia has a water concentration determined by a Fourier-transform infrared spe... | 04/13/2004 |
| 6482387 | Processes for preparing mixed metal oxide powders Described are preferred polymerized organic-inorganic processes for producing mixed metal oxide powders suitable for use in the ceramics and related industries. The preferred processes employ a non-chelating polymer such as polyvinyl alcohol or polyalkyle... | 11/19/2002 |
| 6217841 | Process for the preparation of metal carbides having a large specific surface from activated carbon foams The invention relates to a silicon carbide or metal carbide foam to be used as a catalyst or catalyst support for the chemical or petrochemical industry or for silencers, as well as the process for producing the same. The foam is in the form of a three-dimensi... | 04/17/2001 |
| 6207130 | Metal-exchanged carboxylato-alumoxanes and process of making metal-doped alumina A method has been developed for the solution-based metal exchange of carboxylato-alumoxanes [Al(O)x (OH)y (O2 CR)z ]n with a wide range of metal cations. Metal-exchanged carboxylato-alumoxanes are new... | 03/27/2001 |
| 6110437 | Method for preparing a mixture of powdered metal oxides from nitrates thereof in the nuclear industry A thermal decomposition method useful in the nuclear industry for preparing a powdered mixture of metal oxides having suitable reactivity from nitrates thereof in the form of an aqueous solution or a mixture of solids. According to the method, the solutio... | 08/29/2000 |
| 5953678 | Thorium phosphates, method for preparing same, and use thereof for storing radioactive materials The invention relates to novel thorium phosphates, their preparation process and their use for the storage of radioactive products. These novel thorium phosphates comply with the formulas Th4 P6 O23 (I) or Th4-x M | 09/14/1999 |
| 5925798 | Thoria catalyst A more reactive thoria catalyst for the production of diaryl ethers from aromatic compounds, a process for making the catalyst and the use of the catalyst is taught. The thoria catalyst has a specified surface area, density and average crystal size.... | 07/20/1999 |
| 5440876 | Exhaust gas purification A method of removing particulate and other materials from the exhaust gases from an internal combustion engine in which the exhaust gas is passed through a bed of charged ferro-electric materials. Three forms of apparatus for carrying out the method are d... | 08/15/1995 |
| 5405590 | Off-gas scrubber system An off-gas quencher and solid recovery scrubber unit includes a wet flue gas scrubber which has the dual responsibilities of lowering the temperature of the inlet hot gas entering through the scrubber and trapping contaminants from the gas stream into the... | 04/11/1995 |
| 5205999 | Actinide dissolution A process for the treatment of a material which is or is suspected to contain or carry one or more actinides or compounds thereof to dissolve such actinides or compounds comprises contacting the material with an aqueous solution having a pH in the range 5... | 04/27/1993 |
| 5188809 | Method for separating coke from a feed mixture containing zirconium and radioactive materials by flotation process A process for separating a feed mixture of zirconium and petroleum coke containing traces amount of radioative materials by flotation process utilizing a plurality of flotation cells. The process comprises grinding the feed mixture, slurrying the ground f... | 02/23/1993 |
| 5128112 | Synthesis of actinide nitrides, phosphides, sulfides and oxides A process of preparing an actinide compound of the formula Anx Zy wherein An is an actinide metal atom selected from the group consisting of thorium, uranium, plutonium, neptunium, and americium, x is selected from the group consisti... | 07/07/1992 |
| 4954293 | Separation of thorium and rare earth values from fluoride concentrates thereof Thorium and rare earth values are separated from a fluoride concentrate thereof, by decomposing such concentrate with aqueous sodium hydroxide under conditions such that the amount of sodium hydroxide is at least 1.4 times the stoichiometric amount and th... | 09/04/1990 |
| 4752454 | Process for the preparation of ultrapure active metal fluorides This invention provides a method for the preparation of ultrapure active metal fluorides of increased purity from their metal oxides by reacting an active metal with a predetermined amount of HF(aq) to form a solid reaction product which is dried under co... | 06/21/1988 |
| 4724127 | Method for recovery of actinides from refractory oxides thereof using O.sub. F2 Method for recovery of actinides from nuclear waste material containing sintered and other oxides thereof using O2 F2 to generate the hexafluorides of the actinides present therein. The fluorinating agent, O2 F2... | 02/09/1988 |
| 4670198 | Binder system for the manufacture of nuclear fuel pellets, and the method and product thereof A reproducible method and stable binder composition for preserving the induced plasticity of a particulate ceramic material admixture comprising uranium dioxide and a fugitive binder, and product thereof, for subsequent compaction by compressing molding i... | 06/02/1987 |
| 4590090 | Method for making interdiffused, substantially spherical ceramic powders Substantially homogeneous, substantially spherical interdiffused metallic oxide particles, especially useful in plasma spraying applications, are readily and economically prepared from constituent metal oxide powders by the method of this invention which ... | 05/20/1986 |
| 4532230 | High surface area ThO2 catalyst and method of preparing it A ThO2 catalyst having a high surface area of about 80-125 m2 /g is synthesized. The compound is synthesized by simultaneously mixing an aqueous solution of ThNO3 (NO3)4.4H.sub.2 O with an aqueous sol... | 07/30/1985 |
| 4519986 | Process for preparation of ultrapure thorium fluoride The specification discloses a process for the preparation of ultrapure thorium fluoride (ThF4) having minimized water content and consequent maximized optical transmission of 10.6 micrometer radiation. First, thorium oxide is reacted with aqueo... | 05/28/1985 |
| 4459268 | Method of separating thorium from plutonium A method of chemically separating plutonium from thorium. Plutonium and thorium to be separated are dissolved in an aqueous feed solution, preferably as the nitrate salts. The feed solution is acidified and sodium nitrite is added to the solution to adjus... | 07/10/1984 |
| 4434137 | Method for dissolving hard-to dissolve nuclear fuels Dissolving hard-to-dissolve nuclear fuels such as ThO2 and PuO2 in a nitric acid fission material solution which contains nitric acid and a Pu-fluoride complex to provide free fluorine ions in a small catalytically active amount due ... | 02/28/1984 |
| 4399108 | Method for reprocessing and separating spent nuclear fuels Spent nuclear fuels, including actinide fuels, volatile and non-volatile fission products, are reprocessed and separated in a molten metal solvent housed in a separation vessel made of a carbon-containing material. A first catalyst, which promotes the sol... | 08/16/1983 |
| 4364859 | Method for producing oxide powder A method for the heat treatment of a radioactive substance by microwave power comprising preparing a nitrate solution of uranium, thorium, plutonium or a mixture thereof, and applying to the nitrate solution microwave energy sufficient to directly convert... | 12/21/1982 |
| 4331618 | Treatment of fuel pellets A method of treating a nuclear reactor fuel pellet which has been irradiated and is at least partially depleted of its initial fissile material content to substantially reduce the amount of fuel which would have to be reprocessed before it could be reused... | 05/25/1982 |
| 4269706 | Method of decontaminating radioactive process waste waters Process waste waters at a pH of about 7 contaminated with radioactive isotopes are decontaminated by (a) adjusting the pH to about 5.8, (b) adding CaO or Ca(OH)2 to raise the pH to about 8.5, (c) agitating the mixture for at least 5 minutes to ... | 05/26/1981 |
| 4237201 | Ionic conductivity materials, suitable for constituting solid electrolytes for dry cells and batteries Novel compounds or compositions are provided capable of serving as solid electrolytes involving intercalated dichalcogenides having a combination of a tetravalent metal ion with a metal ion of lower oxidation state and a compensating amount of alkali meta... | 12/02/1980 |
| 4205964 | Process for producing ceramic powders and products resulting therefrom A process and products produced thereby, e.g., alumina tools, in which ceramic powder particles are subjected to high transmissive energy milling under dry conditions and with given ratios of impacting media to powder, the milling being conducted for a pe... | 06/03/1980 |
| 4193953 | Hydrosol droplet casting process for production of nuclear fuel and breeder material granules A hydrosol containing, in nitrate form, a fuel or fuel-and-breeder material which is projected horizontally in the form of droplets into a gas phase containing gaseous ammonia and allowed to fall in a drip-casting column into a precipitation bath containi... | 03/18/1980 |
| 4187280 | Process for recovering useable products from by-product ammonium nitrate formed in the manufacture of nuclear reactor fuels or breeder materials Radiation-contaminated ammonium nitrate is heated in solution to about 100° C. in the presence of finely powdered calcium oxide or lithium hydroxide. Ammonia and water vapor are given off leaving an alkaline or alkaline earth nitrate which can then be sa... | 02/05/1980 |
