Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4618448 | Carboxylic/sulfonic/polyalkylene oxide polymer for use as scale, corrosion, and iron oxide deposit control The instant invention is directed to a process for inhibiting corrosion and the formation and deposition of scale and iron oxide in aqueous systems, comprising adding to the system at least 0.1 ppm of a water-soluble polymer having an intrinsic viscosity ... | 10/21/1986 |
| 4606828 | Scale formation preventor and/or remover Apparatus and method for removing hardening calcium-containing and similar minerals from water, in which raw water is passed through a passage, having a reduced cross-sectional area, in an elongated core of a suitable alloy. The passage is provided with c... | 08/19/1986 |
| 4606890 | Process for conditioning metal surfaces Process for conditioning metal surfaces to inhibit their corrosion and/or to inhibit scale deposition thereon by treating said surfaces: (A) prior to contact with a corrosive or scaling environment, with 2-hydroxy-phosphonoacetic acid or a metal salt thereof a... | 08/19/1986 |
| 4584104 | Silica inhibition: prevention of silica deposition by boric acid/orthorborate ion A method of inhibiting amorphous silica scale formation on surfaces in contact with industrial waters containing dissolved silicates is disclosed. The method involves treating the industrial waters with a boron compound which dissolves in or hydrolyzes in... | 04/22/1986 |
| 4574071 | Process for removing dissolved oxygen from water using hydrazine A process for removing dissolved oxygen from an aqueous medium, using hydrazine to react with the oxygen, where the aqueous medium is contacted with a catalyst bed of palladium or platinum metal dispersed on a solid carrier, at ambient temperatures. The c... | 03/04/1986 |
| 4563283 | Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content This invention relates to a process for achieving and maintaining the clarity of bicarbonate bearing waters. The process has application to treating bicarbonate bearing waters where such waters are for injection into a subsurface formation, for waste disp... | 01/07/1986 |
| 4561981 | Treatment of fouling with microcapsules A method for controlling, preventing, or removing fouling deposits comprising microencapsulating fouling control chemicals in a slow release capsule. The microcapsules are applied to the substrate to be treated, where they stick to the substrate and slowl... | 12/31/1985 |
| 4559156 | Process for dispersing particulate material in aqueous systems Method of dispersing particulate matter, e.g., sludge, in water comprising adding thereto a copolymer, preferably methacrylic acid and acrylamide in a 1:1 mole ratio.... | 12/17/1985 |
| 4557835 | Process for removal of dissolved oxygen from steam generation systems An improved process for removing oxygen from an aqueous medium used in a steam generating system, the aqueous medium having hydrazine added thereto, wherein hydrazine-containing aqueous medium condensate formed in a condenser is exposed to ultraviolet lig... | 12/10/1985 |
| 4537684 | Control of metal-containing scale deposition from high temperature brine A method is disclosed for controlling the deposition of metal-containing scales, such as iron silicate scale, from a hot, aqueous, geothermal brine or the like, without substantial corrosion of brine handling equipment. The brine is contacted with (1) an ... | 08/27/1985 |
| 4533526 | Process for recovering polymetal compounds discharged from a submarine hydrothermal source and devices for carrying out the same A process and device for recovering polymetal compounds discharge from a submarine hydrothermal source comprises the use of a device comprising a bell-shaped collector member provided with a flexible skirt and placed just above the hydrothermal source to ... | 08/06/1985 |
| 4532047 | Silica inhibition: prevention of silica deposition by addition of low molecular weight organic compounds A method of inhibiting amorphous silica scale formation on surfaces in contact with industrial waters which comprises treating said waters with an effective amount for the purpose of inhibiting amorphous silica scale formation of a water-soluble, low mole... | 07/30/1985 |
| 4519914 | Method for treating swimming pool water For water treatment in swimming pools, cooling towers, hot tubs, and other systems it is desired to feed various chemicals in small quantities but at optimum rates into the system. In several embodiments of the invention the water is recirculated through ... | 05/28/1985 |
| 4517097 | Process for diluting aqueous polymer solutions A process for preventing, or at least substantially reducing, scaling in an aqueous polymer dilution apparatus by injecting carbon dioxide gas into the solution to maintain the pH of the solution in a range which tends to hold scale forming substances in ... | 05/14/1985 |
| 4500434 | Inhibiting scale precipitation from high temperature brine A method for inhibiting the precipitation of a scale, such as an iron silicate scale, from a hot aqueous brine solution, such as a geothermal brine, during production and handling of the brine wherein there is injected into the brine a brine-soluble acid ... | 02/19/1985 |
| 4455235 | Scale inhibition method employing (meth)acrylic acid/methallylsulfonate copolymer Water-soluble (meth)acrylic acid/methallysulfonate copolymers, containing less than 20% by weight of the methallylsulfonate comonomer, are well suited as scale inhibitors for aqueous environments, especially those comprising essentially equal amounts by w... | 06/19/1984 |
| 4444675 | Alkaline scale abatement Formation of alkaline scale in water distillation equipment is reduced or substantially eliminated without a significant increase in equipment corrosion rate by dissolving an effective amount of carbon dioxide in brine which is boiling or flashed or which... | 04/24/1984 |
| 4432837 | Solvent recovery process A process of recovering organic solvent from a liquid waste product which waste product is heat convertible by the steps of: (a) dispersing the liquid waste product in particulate form in water, in the presence of a bentonite or hectorite clay; (b) heating the... | 02/21/1984 |
| 4391715 | Waste treatment process Treatment of aqueous waste liquors containing diazonium salts with sulfite ions decomposes the diazonium salts without the formation of undesirable tar or foam, yielding a liquor amenable to further treatment with an oxidizing agent, e.g. hydrogen peroxid... | 07/05/1983 |
| 4366066 | Stabilization of softened water with self-generated CO2 Apparatus and a method of adding CO2 to softened water flowing through a series of interconnected flash chambers after the softened water has been directed out of a settler. The inlet of the settler receives preheated hard water after the hard ... | 12/28/1982 |
| 4287072 | Water treatment by ion exchange resin In the treatment of water by the use of a cationic and/or anionic exchange resin, catalyzed hydrazine compound is added to the feed water to alleviate the iron fouling of the ion exchange resin.... | 09/01/1981 |
| 4284513 | Process for preventing encrustations on surfaces which are in constant contact with aqueous solutions containing matter prone to crystallize The present invention is a process for preventing incrustations of surfaces which are in contact with aqueous solutions containing material prone to crystallize by forming a thin, protective film on the surface to be protected.... | 08/18/1981 |
| 4278549 | Magnetic conditioning of liquids Method and apparatus for magnetically treating aqueous and non-aqueous liquid streams to enhance their flow properties and to reduce their tendency to deposit scales, encrustations and the like, wherein the liquid stream for treatment, either immediately ... | 07/14/1981 |
| 4276180 | Industrial waste-water reuse by selective silica removal over activated alumina Industrial waste-water, particularly cooling water containing water conditioning chemical additives, which heretofore has been discharged to the environment as blowdown because of high silica content, may now be treated for selective silica removal to con... | 06/30/1981 |
| 4265701 | Liquid concentration method An evaporator for increasing the solids content of a liquid-solids mixture employs vapor compressor means to recycle superheated vapors that are boiled off the mixture by a heat transfer fluid. The super-heated vapors are forced into the mixture before th... | 05/05/1981 |
| 4265746 | Water treating apparatus and methods An apparatus and method for treating fresh water by producing a magnetic field in proximity to a flow of such water within a water conduit having an electrically conductive portion connected electrically to earth. The magnetic field has north and south po... | 05/05/1981 |
| 4253950 | Method for cleaning water containing devices A process is described for cleaning water containing devices, for example, conventional home flush toilet bowls. Dibasic magnesium hypochlorite is dissolved in the water in the flush tank and thereafter delivered to the bowl when the toilet is flushed. Th... | 03/03/1981 |
| 4247371 | Precipitating scale-forming compounds from water, and forming fresh water Water containing dissolved compounds is preheated, and is then pressurized in stages of water pressure, while receiving a quantum of steam. Scale-forming compounds in the water are thermally precipitated, and clarified post-thermal water is formed. This i... | 01/27/1981 |
| 4224151 | Preventing scale deposition from geothermal fluids A method for preventing the deposition of sulfide and/or sulfate scale during the production of a hot two-phase geothermal fluid which contains hydrogen sulfide, barium heavy and/or transition metals, and at least a critical minimum amount of calcium in s... | 09/23/1980 |
| 4177245 | Scale suppression in lime and limestone scrubbers Suppression of calcium sulfate scale in wet lime and limestone flue gas desulfurization (FGD) scrubbers and mist eliminators is accomplished by scrubbing in the presence of an oxidation inhibitor comprising gaseous nitric oxide (NO).... | 12/04/1979 |
| 4172786 | Ozonation of cooling tower waters Continuous ozone injection into water circulating between a cooling tower and heat exchanger with heavy scale deposits inhibits formation of further deposits, promotes flaking of existing deposits, inhibits chemical corrosion and controls algae and bacter... | 10/30/1979 |
| 4148615 | Prevention of scale formation in wet lime scrubbers Proper cooling of fossil fuel power plant or smelter reverberatory furnace off gases for removal of sulfur dioxide by proper contacting of the same with lime or limestone, including the recycling of the scrubbing liquor.... | 04/10/1979 |
| 4059513 | Treatment of water to remove certain ions therefrom High sulfate content water is treated in a multistage process to remove sulfate and hardness. Sulfate concentration is reduced in the first stage of the process by addition of calcium hydroxide. Calcium concentration is reduced in the second stage of the ... | 11/22/1977 |
| 4054175 | Geothermal power system Disclosed are a system for extracting heat from hot unrefined water for the purpose of using this heat to do useful work, and specifically for extracting such heat while minimizing the undesirable effects caused by formation of scale and other solid build... | 10/18/1977 |
| 4000991 | Method of removing fly ash particulates from flue gases in a closed-loop wet scrubbing system A method of removing fly ash particulates suspended in industrial waste gases generated from the combustion of fossil fuels in a totally enclosed scrubbing liquor circuit whereby an inert diluent such as Na2 SO4 is used for inhibitin... | 01/04/1977 |
| 3984518 | Process feed and effluent treatment systems A liquid feed and effluent system to recover dissolved process gas (e.g. H2 S) from an effluent process liquid (e.g. water), which liquid may also contain dissolved solid components (e.g. soluble salts); the system heats the feed liquid with he... | 10/05/1976 |
| 3974071 | Water conditioning device A water conditioning device for conditioning the cold water supply to a beverage vending machine. The device uses a spirally twisted strip of corrosion and lime scale inhibiting copper-nickel alloy contained within a cylindrical casing through which the c... | 08/10/1976 |
| 3936376 | Method for collecting scale formations in water pipes Conglomerations of charged ions of minerals in a water pipe system resulting from subjecting the water to an alternating electric field are effectively removed from the water flow path by providing first and second screens. The first screen is located nor... | 02/03/1976 |
