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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7332007 | Dusting device with multiple stream nozzles A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is possible through the use of intensively acting multipl... | 02/19/2008 |
| 7163571 | Exhaust gas cooler and particulate scrubbing system An exhaust gas cooling and particulate scrubbing system for automobiles includes a first stage intercooler for initial, indirect cooling of the exhaust gas and a direct exhaust gas cooling and scrubbing device preferably positioned downstream in the exhaust system t... | 01/16/2007 |
| 6942722 | Air and room cleaning device Air and room cleaning device (1, 21) with a suction motor and a supply of water (8), with a rotating separator which is wetted by the water and through which the air flows and with a control unit (17) which brakes the suction motor (15, 23 | 09/13/2005 |
| 6506348 | Heavy oil fired boiler exhaust gas treatment apparatus There is provided a heavy oil fired boiler exhaust gas treatment apparatus which removes soot and dust and SO3 in the heavy oil fired boiler exhaust gas efficiently at a low cost without using an excessively large apparatus. The treatment appar... | 01/14/2003 |
| 6054324 | Method for detecting the presence of killing and collecting infectious airborne microorganisms A method and device for detecting airborne, infectious microorganisms in indoor air and collecting them for rapid identification. Diseased air is drawn into an enclosed chamber where it is percolated through a liquid such that many of the microorganisms b... | 04/25/2000 |
| 6019819 | Apparatus and method for extracting heat from contaminated waste steam Disclosed is a contaminated waste steam heat recovery apparatus 10 and method therefore which includes a primary condensing unit 38, a low pressure water washing unit 26, a liquid to liquid heat exchanger 36 and a vent fan 31. Waste gas is ducted from fry... | 02/01/2000 |
| 5908491 | Air cleaner An air cleaner for efficiently providing clean air for a structure is comprised of a housing having an intake port and an exhaust port. At least one air chamber having a liquid reservoir at its base is disposed within the housing. A fan draws air through ... | 06/01/1999 |
| 5837105 | Co-current contacting separation tray design and methods for using same A tray design for use in a separation column for distilling or fractionating a feed stream is provided that incorporates co-current contact of the liquid and vapor streams and their subsequent separation on each tray. Located on the trays are a plurality ... | 11/17/1998 |
| 5766958 | Method for detecting and collecting infectious airborne microorganisms for rapid identification A method and device for detecting airborne, infectious microorganisms in indoor air and collecting them for rapid identification. Diseased air is drawn into an enclosed chamber where it is percolated through a liquid such that many of the microorganisms b... | 06/16/1998 |
| 5660615 | Exhaust gas scrubbing process Exhaust gas is brought into contact with a washing liquid chiefly consisting of water in at least two washing stages. In the last washing stage, fresh water and/or a washing liquid containing fresh water is sprayed into the exhaust gas. In the penultimate... | 08/26/1997 |
| 5512084 | Method of removing organic contaminants A method of removing organic contaminants from a process gas such as raw, untreated landfill gas is disclosed. The steps involve collecting the process gas that includes organic contaminants for removal. An absorption liquid such as a terpene, is injected... | 04/30/1996 |
| 5474597 | Method and device for gas cleaning or gas cooling In a method for cleaning polluted gas and/or cooling of hot gas, and a device for carrying out the method, the gas is contacted with finely divided liquid. The finely divided liquid is supplied in the form of essentially umbrella-shaped shells or essentia... | 12/12/1995 |
| 5453115 | Process for cooling and cleaning gas, particularly blast furnace or producer gas, containing ultrafine particles, and apparatus for performing the same A process for cooling and cleaning hot gas containing ultrafine particles exhausted from a coal gasification plant, a blast furnace, or the like. The process utilizes a vertical saturation stage to enrich the gas stream with water vapor and thereby satura... | 09/26/1995 |
| 5352366 | Method for purifying liquid fuel boiler smoke by cooling and washing the smoke and neutralizing the effluents To purify smoke from a liquid fuel (in particular heavy fuel oil) boiler by eliminating unwanted components including acids, the smoke, before it is exhausted to the atmosphere, is caused to pass along a vertical path in a heat exchanger adapted to recove... | 10/04/1994 |
| 5135550 | Recirculating water washer means and method A recirculating washer for a paint spray booth is illustrated and described, and uses upward air motion and gravity to recirculate water on and along two or more recirculating baffles facing each other to form one or more curtains of water for cleaning pa... | 08/04/1992 |
| 4926620 | Cleaning gas turbine inlet air A process and apparatus for cleaning contaminants from inlet air passing to a gas turbine, including contacting the air with a stream of water at a rate and spray pattern sufficient to reduce contaminants present in the air. The water scrubbing action of ... | 05/22/1990 |
| 4874402 | Process for purifying and cooling a hot gas A process for cooling and cleaning a hot fly ash containing synthesis gas wherein the gas is first passed through a cooler, the bulk of the fly ash being separated from the cooled gas in a cyclone, whereupon the gas is further cleaned in a water scrubber.... | 10/17/1989 |
| 4687494 | Apparatus and method for pumping air An apparatus and method for pumping air in which ambient air is mechanically filtered and introduced into a stream of water circulating in a closed path and driven by a water pump, the air-water mixture being directed to an air separation chamber in which... | 08/18/1987 |
| 4678586 | Treatment of wash water in paint spray booths To control build-up of paint in the water tank an alkaline liquid containing NaOH is added in quantities to maintain a pH not substantially less than 9, thus preventing corrosion, and a hydroxide ion concentration not exceeding 0.01M. The additive is intr... | 07/07/1987 |
| 4380353 | Dust control system and method of operation A dust control system for a mining machine, particularly for controlling respirable dust in coal mining operations, comprising a ductwork system having intakes adjacent the cutter head of the mining machine, a fan for drawing air through the ductwork syst... | 04/19/1983 |
| 4328011 | Process for purifying and cooling partial oxidation gases containing dust-like impurities The hot partial oxidation gases which are formed in a gasifier for solid or liquid fuel are passed first into a dust separator under conditions where 70 to 95% of the impurities are eliminated, whereupon the gases then are washed in a wet washer with an a... | 05/04/1982 |
| 4276063 | Gas scrubbing liquids Fully chlorinated and/or fluorinated hydrocarbons are used as gas scrubbing liquids for preventing noxious gas emissions to the atmosphere.... | 06/30/1981 |
| 4252543 | Process for quenching and cleaning a fuel gas mixture A process is described for both (i) quenching a fuel gas mixture including at least one gaseous hydrocarbon foulant (described more particularly herein) and (ii) removing at least a portion of the foulant without substantial formation of mist thereof in t... | 02/24/1981 |
| 4217114 | Process for recovering powders obtained from apparatuses used for treating liquid or solid materials Urea in powder, formed in the course of a prilling opration in which molten urea is delivered to a prilling tower adjacent its upper end for the formation of droplets which descend to the bottom of the prilling tower through a countercurrent stream of coo... | 08/12/1980 |
| 4138296 | Method for removing nitrogen trichloride from chlorine gas In a process for making chlorine electrolytically in which a build-up of nitrogen trichloride occurs in the bottoms of cooling apparatus, a method and apparatus is provided wherein the nitrogen trichloride is dissolved in an organic solvent such as carbon... | 02/06/1979 |
| 4117714 | Method and apparatus for continuously extracting trace contaminants from air and monitoring the contaminant content thereof Air that is desired to be examined for impurities is drawn through a concentrator comprising a cylindrical receptacle into which the air is introduced at the base portion of the receptacle in a direction tangentially of the cylindrical wall. A scrubbing l... | 10/03/1978 |
| 4096236 | Gas scrubbing method A scrubbing system including scrubbers having straight through or direct line gas flow, with steam pretreatment of the gases supplied to the scrubber. The scrubbing solution may be recycled. Where steam is present in the process, the effluent gas is parti... | 06/20/1978 |
| 4081508 | Process for reducing flue gas contaminants from fluid cracking catalyst regenerator Noxious emissions produced in the process of regenerating catalysts employed in the catalytic cracking of hydrocarbons are reduced by burning the coke on the spent catalyst in a regenerator operated at a temperature greater than 1200° F. to produce flue ... | 03/28/1978 |
