Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7722775 | Method and system of destruction of volatile compounds in wastewater The invention proposes a method of destruction of volatile organic and inorganic compounds in wastewater, this method includes following stages: stripping the aforementioned volatile compounds in a stripping-chemisorption column; preliminary heating the gaseous medi... | 05/25/2010 |
| 7402192 | Method and device for continuously treating waste water of industrial origin by water vapour stripping The invention concerns a method characterised in that it consists in: determining online at least an ultraviolet spectrum portion of at least one of the compounds present in one or the other of the waste water feeding circuits (7, 13) or of the column (8 | 07/22/2008 |
| 7387650 | Fuel cell power generation system and method for operating the same A fuel cell power generation system, equipped with a fuel reforming device and a fuel cell body, includes valves, pipelines, a condenser, and a pump for feeding a burner exhaust gas (raw gas) discharged from a heating burner of the fuel reforming device into the fue... | 06/17/2008 |
| 7326283 | Spinning impingement multiphase contacting device A spinning impingement multiphase contacting device and method for heat or mass transfer are disclosed. A first fluid, from which the transfer is to occur, is caused to impinge and be entrained in a spinning permeable element, creating a highly dispersed phase. The ... | 02/05/2008 |
| 7326278 | Advanced contaminate treatment system Decontamination systems and methods are disclosed. In one embodiment, a system comprises a first adsorption/desorption subsystem that is configured to receive a contaminated gaseous solution and remove substantially all of the contaminants from the contaminated gase... | 02/05/2008 |
| 7304124 | Process for stripping volatile substances from dispersion comprising polymer particles and process for producing toner A stripping process is provided which continuously strips volatile substances from a dispersion containing a polymer particles through stripping the volatile substances from a dispersion by blowing an inert gas into the dispersion to draw the volatile substances int... | 12/04/2007 |
| 7125438 | Method and an apparatus for continuously deaerating a liquid The invention relates to a method for continuously deaerating a liquid. The method comprises the step that the liquid is led into a closed container (1) so that a liquid surface (7) is formed within the container (1). The space above the liquid ... | 10/24/2006 |
| 7090716 | Single phase fluid imprint lithography method The present invention is directed toward a method for reducing pattern distortions in imprinting layers by reducing gas pockets present in a layer of viscous liquid deposited on a substrate. To that end, the method includes varying a transport of the gases disposed ... | 08/15/2006 |
| 7066988 | Segmented plate for assembly within a confined area having limited access A segmented plate adapted for assembly within a confined area or volume, and a method of assembly of the segmented plate. The plate, as assembled, has an exterior perimeter that includes exterior edge-boundaries of a plurality of generally rigid plate-sections, each... | 06/27/2006 |
| 7062957 | Percolation test apparatus A percolation test apparatus comprises a water tank (12), a pipe (36) for directing water from the tank into a hole (20) in the ground, an on-off valve (32) for controlling the flow of water in the conduit, and a water level sensor (30... | 06/20/2006 |
| 7052660 | Wet-processing method for combustion ashes of petroleum fuels There is disclosed a wet-processing method for combustion ashes of petroleum fuels, comprising a slurry preparation step of preparing a slurry of the combustion ashes; a metal oxidation step of preparing a slurry containing ammonium metavanadate; a solid/liquid sepa... | 05/30/2006 |
| 7011748 | Water aerating and dirt collecting assembly for aquarium A water aerating device for an aquarium includes a housing having a chamber to receive a guide device which is arranged between an inlet and an outlet of the housing, a paddle wheel is rotatably attached onto the guide device, and a pumping device may be used to pum... | 03/14/2006 |
| 6981997 | Deaeration of water and other liquids Liquid such as water is deaerated by dissolving stripping gas such as carbon dioxide into the water while maintaining pressure, reducing the pressure, and then feeding the liquid into a vessel wherein a gas space is maintained over said water, wherein the pressure o... | 01/03/2006 |
| 6918950 | Apparatus and method for reducing residual solvent levels Apparatus and methods for reducing residual solvent levels in extracted biomass that is contaminated with HFC solvent that includes sparging the biomass extract with a solvent stripping gas such as air or nitrogen are disclosed. Apparatus for carrying out the method... | 07/19/2005 |
| 6884401 | Method for removing volatile components from a high viscosity liquid by using rotation pack bed A high viscosity liquid is fed into a rotation pack bed at a position with a distance far enough from a rotation axis, creating a centrifugal force exerted on the high viscosity liquid overwhelming a drag thereof, so that it can flow radially through the rotation pa... | 04/26/2005 |
| 6878188 | Method and apparatus for removing VOCs from water A method and apparatus for removing volatile contaminants, such as methyl tertbutyl ether (MTBE), from water or other supplies of liquid. In one embodiment of the invention, a gas is sparged through a helical flow of liquid to strip away contaminants. The flowrate o... | 04/12/2005 |
| 6846422 | Sludge stripping process and system A method and system for removing volatile organic compounds (VOCs) from sludge advantageously utilizes a stripper for removing the VOCs directly from the sludge to convert the sludge into a non-hazardous material. Preliminary steps of mixing may include addition of ... | 01/25/2005 |
| 6840983 | System and method of water treatment The present invention generally offers a system and a method that allows a vessel to treat water while providing corrosion inhibition. An oxygen stripping gas source produces oxygen stripping gas that may be pumped directly to, preferably but optionally, a venturi i... | 01/11/2005 |
| 6830607 | Slurry tray and slurry tray assembly for use in fractionation towers A slurry tray and a method for removing residual vinyl chloride monomer from a polyvinylchloride resin slurry with reduced discoloration of the polyvinylchloride resin is provided. The slurry tray preferably includes partitioned channels that cause the slurry to flo... | 12/14/2004 |
| 6719823 | Polishing systems, methods of polishing substrates, and methods of cleaning polishing slurry from substrate surfaces The invention encompasses polishing systems for polishing semiconductive material substrates, and encompasses methods of cleaning polishing slurry from semiconductive substrate surfaces. In one aspect, the invention includes a method of cleaning a polishing slurry f... | 04/13/2004 |
| 6716273 | Method and device for eliminating oxygen contained in aqueous monomer solutions A continuous process for removing oxygen from aqueous monomer solutions, including flowing an inert gas and a monomer solution in a column-shaped apparatus as a countercurrent, wherein the monomer solution is added at the head of the apparatus, flows through the app... | 04/06/2004 |
| 6644334 | Method and system for reducing the viscosity of crude oil employing engine exhaust gas A method and system for treating crude oil to improve its flowability includes operating an internal combustion engine to produce exhaust gas, reducing the temperature of the exhaust gas, injecting cooled exhaust gas into a separator in which water is ext... | 11/11/2003 |
| 6602327 | Process for removing an undesirable dissolved gas from a liquid Undesirable dissolved gas is removed from a liquid by pressurizing the liquid containing the undesirable dissolved gas therein. The liquid is then directed into a hydrocyclone having an inlet optimized for liquid particle movement through a liquid vortex ... | 08/05/2003 |
| 6582498 | Method of separating carbon dioxide from a gas mixture using a fluid dynamic instability In a method of separating carbon dioxide from a gas mixture, a liquid solvent flows down an array of vertical wires with the gas mixture flowing over the liquid. Once on the wire, the liquid quickly breaks up into drops of varying sizes, with each size mo... | 06/24/2003 |
| 6547855 | Mass transfer system A mass transfer machine removes dissolved gases or volatile organic compounds from air or a liquid. The mass transfer machine includes a vessel capable of containing a liquid and having a liquid inlet and an air inlet at a near end. It further includes a ... | 04/15/2003 |
| 6521022 | Apparatus and method for reducing residual solvent levels Apparatus and methods for reducing residual solvent levels in extracted biomass that is contaminated with HFC solvent that includes sparging the biomass extract with a solvent stripping gas such as air or nitrogen are disclosed. Apparatus for carrying out... | 02/18/2003 |
| 6488743 | Metal melt treatment equipment Equipment for the treatment of a liquid such as a metal melt has one or more rotors (5) for the supply of gas and/or particulate material to the liquid in a reaction chamber (1). The reaction chamber (1) is closed and has an inlet (3) and an outlet (13) a... | 12/03/2002 |
| 6372024 | System and method for removing contaminating gases from water The system removes contaminating gases, such as radon, from water using a bubbling action. Contaminated water is sprayed together with air through a duct to a bottom region of a bubbling container. The water and air move generally in the same direction th... | 04/16/2002 |
| 6344588 | Process for the preparation of urea In the present process for the preparation of urea, an off-gas stream released during the synthesis of melamine in a high-pressure melamine process which consists predominantly of ammonia and carbon dioxide, is introduced into at least one high-pressure s... | 02/05/2002 |
| 6325842 | Method and apparatus for aerating The present invention is a method and apparatus for aerating liquids including pumping liquids to be aerated into a hollow manifold, providing nozzles on the manifold and openings in the top of the manifold for spraying the liquids to be aerated therefrom... | 12/04/2001 |
| 6287369 | Low pressure radon stripper for wells A radon stripper system for removing radon from well water including a draft tube and an air supply line that is interfaced with a gas supply. The draft tube is vertically aligned beneath the surface of the water in a well. Gas is delivered into the draft... | 09/11/2001 |
| 6277175 | Method and apparatus for removing trihalomethanes and dissolved oxygen from water A method for removing THMs and dissolved oxygen from water, including supplying the water into an upper portion of an air stripping container, passing the water generally downward toward a lower portion and through a first packing material, introducing ai... | 08/21/2001 |
| 6251167 | Machine and process for removing dissolved gasses from liquids An enclosed tank with a liquid inlet, a liquid outlet, a gas inlet, and a gas outlet. A liquid is forced to flow turbulently through the tank. Simultaneously a scrubbing gas is pumped through the tank. Turbulence induced in the liquid encourages gasses di... | 06/26/2001 |
| 6193893 | Stripping of contaminants from water Process and apparatus to strip volatile contaminants from a liquid supply stream in which the contaminants are dissolved. A gas inducing mixer-injector injects a stripping gas into the stream to form a mixed stream of liquid with its contaminants and bubb... | 02/27/2001 |
| 6193786 | Portable oil degasification apparatus The present invention provides methods and devices for reducing the concentration of combustible gases in oils. The methods and devices of the invention are of particular use in reducing the concentration of combustible gases in insulating oils used in el... | 02/27/2001 |
| 6176899 | Water treatment process for neutralizing gas supersaturation A method of degassing a volume of supersaturated liquid is provided which comprises introducing a plurality of microbubbles of gas substantially near the bottom of the volume of supersaturated liquid so that the microbubbles percolate up through the volum... | 01/23/2001 |
| 6174506 | Carbon dioxide recovery from an oxygen containing mixture A process for recovering carbon dioxide from a gas containing both carbon dioxide and oxygen wherein a carbon dioxide and oxygen containing gas is first contacted with an alkanolamine solution to produce an alkanolamine loaded with carbon dioxide and oxyg... | 01/16/2001 |
| 6171368 | Gas extraction from closed containers Apparatus and an associated method of operation are disclosed for removal of gaseous contaminants, particularly oxygen, from closed containers. The apparatus is economical, simple to install and operate, of convenient size, and highly effective. A gas ext... | 01/09/2001 |
| 6123750 | Spray and aeration system for removing volatile compounds An aeration system for removing radon and other volatile compounds from a water or other liquid source. Water supplied from a well and/or water pressure/storage tank enters an aeration tank and is sprayed through a clog resistant nozzle. The nozzle create... | 09/26/2000 |
| 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 tungsten hexafluoride-containing volatile impurities and an a... | 08/15/2000 |
