Class / Patent application number | Description | Number of patent applications / Date published |
204157420 | Using sonic or ultrasonic energy | 21 |
20080251375 | Method and Devices for Sonicating Liquids with Low-Frequency High Energy Ultrasound - The invention relates to a method and devices for sonicating liquids with low frequency high energy ultrasound comprises a low frequency high energy ultrasound system having at least one sonotrode which projects into a reactor vessel through which the liquid passes via at least one inlet orifice and at least one outlet orifice. To avoid cavitation at the sonotrode, it is proposed that in a close region of the oscillation-transducing sonotrode surface within the reactor vessel a pressure/amplitude combination close to or above the pressure-amplitude characteristic line is generated at which considerably reduced or no cavitation occurs and in the adjacent region in the reactor vessel at least in a region and at least at times a pressure/amplitude combination is maintained below the pressure-amplitude characteristic line at which cavitation is generated. A corresponding device has, for example, an inlet orifice ( | 10-16-2008 |
20090026064 | PRECIPITATION OF SILICA IN A BAYER PROCESS - In the Bayer process for the production of alumina, problems are caused by silica dissolving in the caustic liquor. This silica arises from the presence of kaolin in the bauxite. A process for removing this kaolin comprises contacting the bauxite with sodium hydroxide solution to form a mixture, and subjecting the mixture to intense ultrasonic irradiation to cause cavitation; this can be carried out at temperatures below 100° C. This enhances both the dissolution of kaolin and the precipitation of sodium aluminium silicate. Silica remaining in solution in spent Bayer liquor (after digestion and then precipitation of gibbsite) can be removed by a similar ultrasonic irradiation treatment to cause it to precipitate before it forms scale in heat exchangers. | 01-29-2009 |
20090134008 | Metal Oxide System for Adsorbent Applications - Provided herein are adsorbents and methods of using the adsorbents to at least partially remove one or more adsorbates. In an aspect, an adsorbate within a phase is at least partially removed by providing an adsorbent material and contacting the adsorbent material with the phase having an adsorbate, to at least partially remove the adsorbate. Various adsorbents are disclosed having the chemical formula RE | 05-28-2009 |
20090250333 | Method of Solubilizing Carbon Nanomaterial - [Problems] The present invention is to provide a method of solubilizing a carbon nanomaterial, in which a carbon nanomaterial can be dissolved in a hydrophilic solvent easily and uniformly without structural deterioration of the carbon nanomaterial, the dispersibility can be maintained for a prolonged period of time, the solubilizing treatment can be performed at low cost, and the treatment can be easily controlled. | 10-08-2009 |
20100025224 | APPARATUS AND PROCESS FOR METAL OXIDES AND METAL NANOPARTICLES SYNTHESIS - The present invention provides an approach to control the generation and grow of nanocrystal with membrane diffusion method and related apparatuses to produce inorganic oxide nanopowders and metal nanoparticles. With this method, the size and size distribution of inorganic oxide nanopowders and metal nanoparticles can be tuned. It overcomes the shortcomings possessed by the common chemical and physical method of preparing nanoparticles. | 02-04-2010 |
20100032283 | JACKETED ULTRASOUND SYSTEM - An ultrasound system is disclosed that includes a tub, a reaction chamber, an ultrasound probe positioned within the reaction chamber, and a cooling jacket surrounding the tub for exchanging heat with the tub. | 02-11-2010 |
20100175984 | METHOD FOR MAKING NANOPARTICLES - A method for making nanoparticles comprises: providing a water-in-oil microemulsion comprising water, sodium dioctyl sulfosuccinate and an oil phase; and adding a tungsten compound to the microemulsion. The molar ratio of water to sodium dioctyl sulfosuccinate is equal to or greater than 10. | 07-15-2010 |
20100187090 | METHOD FOR PROCESSING COAL WITH A HIGH CONTENT OF IMPURITIES TO OBTAIN A PURIFIED FUEL MIXTURE UTILIZABLE IN PLACE OF FUEL OIL IN PRESENT-DAY POWER PLANTS - Coal slurry is produced for use as fuel. Starting from a raw carboniferous mineral containing various types of impurities, the method of production includes the following stages: a) grinding the raw coal to reduce it to particles of a size less than 75 μm, the ground material then being carried by air drawn in through a grinding mill and on through a filter where a selection is made of the particles; b) immersion of the particles in water to obtain a turbid mixture; c) addition of flotating agents to the turbid mixture and flotation by introduction of air to obtain the coal slurry; d) checking the concentration of coal in the slurry to ensure that it reaches between 40 and 60% by weight per kilogram of slurry, according to the type of carboniferous mineral used at the outset; e) stocking the slurry in a tank where it is kept continuously moving. | 07-29-2010 |
20110017585 | Mass production of pristine nano graphene materials - The present invention provides a method of producing pristine or non-oxidized nano graphene platelets (NGPs) that are highly conductive. The method comprises: (a) providing a pristine graphitic material comprising at least a graphite crystallite having at least a graphene plane and an edge surface; (b) dispersing multiple particles of the pristine graphitic material in a liquid medium containing therein no surfactant to produce a suspension, wherein the multiple particles in the liquid have a concentration greater than 0.1 mg/mL and the liquid medium is characterized by having a surface tension that enables wetting of the liquid on a graphene plane exhibiting a contact angle less than 90 degrees; and (c) exposing the suspension to direct ultrasonication at a sufficient energy or intensity level for a sufficient length of time to produce the NGPs. Pristine NGPs can be used as a conductive additive in transparent electrodes for solar cells or flat panel displays (e.g., to replace expensive indium-tin oxide), battery and supercapacitor electrodes, and nanocomposites for electromagnetic wave interference (EMI) shielding, static charge dissipation, and fuel cell bipolar plate applications. | 01-27-2011 |
20110162956 | METHOD FOR SEPARATING RICH ORE PARTICLES FROM AGGLOMERATES WHICH CONTAIN NON-MAGNETIC ORE PARTICLES AND MAGNETIZABLE PARTICLES ATTACHED THERETO, ESPECIALLY FE-CONTAINING OXIDE COMPONENTS SUCH AS FE3O4 - In a method for separating rich ore particles from agglomerates which contain said rich ore particles and magnetizable particles attached thereto, especially Fe3O4, in which agglomerates of the rich ore particle and the magnetizable particle are bonded by organic molecular chains, the agglomerates are contained in a suspension containing a carrier fluid and are broken up by an input of mechanical energy so that an agent contained in the suspension and decomposing the exposed, hydrophobic molecular chains can act upon the molecular chains. The Fe-containing oxide components are separated from the suspension in a magnetic separation process. | 07-07-2011 |
20110226609 | System and method for producing nanomaterials - This system and method for producing nanomaterials allows for the production of relatively high concentrations of nanoparticles with a minimum of expense, time and energy. Ultrasonic waves, produced at a power of approximately 50 W with a frequency of 26.23 kHz, are projected on a material sample while, simultaneously, a fluid stream jet is projected on the material sample. The ultrasonic waves, in the presence of the fluid jet, create cavities that explode at the surface of the solid material, leading to creation of cracks in the material surface. With the increase in the number of cracks in the material, the solid material erodes. The eroded material, which is on the nanometer scale, is collected on a suitable substrate, such as silicon. This method allows for the preparation of nanoparticles from any solid material, in particular very hard materials, such as diamond, silicon carbide and the like. | 09-22-2011 |
20110240459 | JACKETED ULTRASOUND SYSTEM - An ultrasound system is disclosed that includes a tub, a reaction chamber, an ultrasound probe positioned within the reaction chamber, and a cooling jacket surrounding the tub for exchanging heat with the tub. | 10-06-2011 |
20120061231 | GAS SENSOR ELEMENT AND METHOD OF MANUFACTURING THE SAME - A gas sensor element includes a solid electrolyte body having oxygen ion conductivity and electrode layers formed on both surfaces of the solid electrolyte body configuring a pair of electrodes. The gas sensor element detects concentration of a selected component included in a measured gas. In the gas sensor element, closed pores having an average pore diameter of 5 nm or more and 120 nm or less are dispersed in the electrode layers, porosity measured by cross-sectional observation of the electrode layers is 1% or more and 18% or less, and 90% or more of the closed pores is dispersed within metal grains forming the electrode layers. | 03-15-2012 |
20120103788 | METHOD FOR TREATING LIQUIDS WITH WAVE ENERGY FROM AN ELECTRICAL ARC - A method for treating a liquid using an apparatus includes: (a) a pump volute or hydrocyclone head having an inlet and an outlet, (b) a throat having a first opening, a second opening and a central axis, wherein the first opening is connected to the outlet of the pump volute or hydrocyclone head, (c) a tank connected to the second opening of the throat, and (d) a wave energy source having a first electrode within the pump volute or hydrocyclone head that extends through the outlet into the first opening of the throat along the central axis of the throat, and a second electrode within the tank that is spaced apart and axially aligned with first electrode. The method includes the steps of providing the above-described apparatus, supplying the liquid to the inlet of the pump volute or hydrocyclone head, and irradiating the liquid with one or more wave energies produced by the wave energy source. | 05-03-2012 |
20130001068 | Production process for chemically functionalized nano graphene materials - A combined production-functionalization process for producing a chemically functionalized nano graphene material from a pre-intercalated, oxidized, or halogenated graphite material, comprising: (A) Producing exfoliated graphite from the pre-intercalated, oxidized, or halogenated graphite material, wherein the graphite material is selected from the group consisting of natural graphite, artificial graphite, highly oriented pyrolytic graphite, carbon fiber, graphite fiber, carbon nano-fiber, graphitic nano-fiber, meso-carbon micro-bead, graphitized coke, and combinations thereof; (B) Dispersing the exfoliated graphite and an azide or bi-radical compound in a liquid medium to form a suspension; (C) Subjecting the suspension to ultrasonication with ultrasonic waves of a desired intensity for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the azide or bi-radical compound to produce the functionalized nano graphene material. | 01-03-2013 |
20130153406 | METHODS OF MANUFACTURING METAL OXIDE NANOPARTICLES - Methods of manufacturing metal oxide nanoparticles are provided. The method uses a bubble generation ultrasonic synthesis method. A gas is injected into a metal oxide preliminary composition solution to promote length growth of nanoparticles. After a basic chemical species solution is mixed with the metal oxide preliminary composition solution, ultrasonic waves are applied to form a reactant. The reactant is refined to manufacture metal oxide nanoparticles. The nanoparticles may have excellent dispersibility and a uniform thin film may be formed by the nanoparticles. | 06-20-2013 |
20130264188 | PROCESS FOR THE PREPARATION OF HYDROXY GALLIUM PHTHALOCYANINE - The present teachings describe a process for converting a HOGaPc Type I polymorph to the HOGaPc Type V polymorph. The process includes obtaining a slurry comprising hydroxy gallium phthalocyanine (HOGaPc) Type I polymorph. The slurry is mixed at a resonant frequency of the slurry by applying a low frequency acoustic field for a time sufficient to convert the HOGaPc Type I polymorph to the HOGaPc Type V polymorph. | 10-10-2013 |
20150144480 | INDUSTRIAL MICROWAVE ULTRASONIC REACTOR - An industrial microwave ultrasonic reactor has an inner wall liner. A microwave generation device is formed by microwave units distributed on an outer sidewall, or by a microwave pipe disposed outside the reactor and microwave units distributed on the microwave pipe. One end of the microwave pipe communicates with the bottom of the reactor via a connection pipe I, and the other end communicates with the top via a return pipe. A shield is disposed outside the microwave generation device to separate the microwave units from the outside, and a heat removal device is disposed outside the shield. An ultrasonic wave generation device is formed by 10 to 30 sets of ultrasonic pulse units disposed at intervals along the outer sidewall. Each set has 10 to 50 members distributed along the circumferential direction of the reactor. A stirring shaft is fixed below a stirring motor and extends into the reactor. | 05-28-2015 |
20150336065 | SYSTEMS AND METHODS FOR TRANSLATING, LEVITATING, AND OR TREATING OBJECTS IN A RESONATING CHAMBER - A process for translating objects a resonating chamber is described. The process includes: (i) obtaining a resonating chamber filled with a fluid medium and objects disposed therein; and (ii) generating one or more different standing waves to convey said objects from their disposed position to another location inside the resonating chamber. Using the above-described translating process, the objects may be positioned at a cavitation zone inside the resonating chamber. In one aspect of the present teachings, the objects are then subject to acoustic cavitation to convert at least some of the objects from one state to another state. | 11-26-2015 |
20160074826 | METHOD FOR TREATING SLURRY AND TREATMENT APPARATUS USED FOR THE SAME - A slurry treatment material containing solid particles mixed in liquid is finely pulverized, without using dispersion media, by flowing the treatment material into a vessel and through an annular fine gap formed between an inner wall of the vessel and an outer periphery face of a rotatable body mounted within the vessel. Rotation of the rotatable body subjects the treatment material to compression, expansion and shearing treatments. After passing through the annular fine gap, the treatment material flows into an ultrasonic chamber where it is irradiated with ultrasonic waves that break up and disintegrate agglomerated clumps of solid particles that may be present in the treatment material. | 03-17-2016 |
20160167011 | METHOD FOR PRODUCING A GRAPHENE | 06-16-2016 |