Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7364652 | Screening apparatus Screening apparatus (101,901) for use at an overflow weir (301, 902) in a sewerage system. The apparatus comprises a continuous moving screen band (201, 902) and a band cleaning mechanism (608). A first portion (801) of the screen ... | 04/29/2008 |
| 7329298 | Filter A filter for exhaust gases produced by an internal combustion engine, and a method of using such a mat on a vehicle. The filter is a mat of fibers enclosed within a metal gauze. Preferably, the mats are corrugated and spaced apart within a housing such that exhaust ... | 02/12/2008 |
| 7258784 | Solid liquid filtration apparatus and method A method and system for separating a particulate contaminate from a contaminated liquid medium involves filtering the contaminated liquid medium with a filter element having an afflux surface made of plastic particles that are sintered together. The contaminated liq... | 08/21/2007 |
| 7044158 | Continuous filtration systems using pump, venturi and flow control valve Continuous filtration systems comprising a venturi, flow control valves, filter and pump. In one specific embodiment the flow control valve and venturi are combined hereinafter referred to as a CHUF. The CHUF may also contain concentrate release, and temperature, fl... | 05/16/2006 |
| 6969414 | Waste stream separator A waste stream separator separates liquid and solid waste from a conveying air stream. The liquid and solid waste are first separated from the air steam by gravity and filtration in a removable primary waste barrel. The air is then drawn through a secondary waste ba... | 11/29/2005 |
| 6932169 | System and method for developing and recycling drilling fluids A system and method for developing and recycling drilling fluids at the site of a subterranean well is described, thus eliminating the need for transporting the fluids to the site. ... | 08/23/2005 |
| 6149824 | Continuous filtration system using single pump, venturi, and flow control valve This invention is directed to filtration systems comprising a venturi, flow control valves, filter and pump. In one specific embodiment the flow control valve and venturi are combined hereinafter known as a CHUF. The CHUF may also contain concentrate rele... | 11/21/2000 |
| 6066264 | Method of oil-water separation An oil-water separation method to separate oil-contaminated water into clean, filtered water for use. The method comprises filtering prefiltered, coalesced oil-water in an oleophobic depth-type filter.... | 05/23/2000 |
| 5871652 | Method for high volume pipeline water filtration A method and apparatus for filtering particulates from a turbid liquid is provided. The apparatus is preferably used to filter particulates from water used to flush a pipeline after a cleaning operation, after hydrostatic testing or during product displac... | 02/16/1999 |
| 5814234 | Integrated soil and fluid decontamination system A method for decontaminating both soil and mixed waste water polluted by hydrocarbons in a single integrated process is disclosed. Contaminated mixed waste fluid is separated into water and hydrocarbons which are then used in the thermal decontamination o... | 09/29/1998 |
| 5618415 | Method for removing debris from a free flowing water system A method for removing debris from a free flowing water system (100) using an improved filter apparatus (10) is described. The apparatus includes a rail (12) which is mounted adjacent the water supply intake opening (102) and a continuous belt (36) made of... | 04/08/1997 |
| 5232604 | Process for the oxidation of materials in water at supercritical temperatures utilizing reaction rate enhancers Disclosed is a method of substantially completely oxidizing material in an aqueous phase at supercritical temperatures and sub- or supercritical pressures by initiating the oxidation in the presence of small amounts of strong oxidizing agents that functio... | 08/03/1993 |
| 5149433 | Method and apparatus for supply of decontaminated fuel to diesel engine Apparatus for the supply of decontaminated fuel to a diesel engine including two filtering stages, the first being a spiral wound, cross flow ultrafiltration unit and the second being a spiral wound deadheaded ultrafiltration unit with a pressure operated... | 09/22/1992 |
| 5138964 | Oil spill control for an oil tanker and method of using same An oil control sock has an enlarged inlet end which is placed over the ruptured opening in the side of an oil vessel while the outer free open end is then raised to a position above the oil level in the tanker thereby allowing the oil to seek its own leve... | 08/18/1992 |
| 5080807 | Continuous particle separation process A continuous process for the separation of small particles from larger particles in a biological preparation passes a liquid stream of the preparation through a first filter or screen, which retains larger particles, passing smaller particles in the liqui... | 01/14/1992 |
| 5006265 | Filter apparatus and method for removing solids from fluids The invention is a filter apparatus and method for separating suspended solids from fluids, particularly liquids. A filter chamber is defined inside a filter housing. Inside the chamber is a filter bundle, consisting of two or more filter screens, of a no... | 04/09/1991 |
| 4820426 | Process for the processing of fluids containing suspended particles The invention relates to a process and an apparatus for the processing or treatment of fluids containing suspended particles and more particularly usable for the processing or treatment of gases and liquids contaminated by radioactive particles. The fluid... | 04/11/1989 |
| 4810389 | Filtration system A method and apparatus are disclosed for increasing the concentratin of suspended particles within a slurry by removal of the fluid. The slurry is passed along the surface of a porous material such as porous plastic pipe having pores of a diameter greater... | 03/07/1989 |
| 4751007 | Method for filtering Bacillus subtilis A method comprising passing a culture solution including Bacillus subtilis or gene-recombinated Bacillus thereof through a pipe-like ceramic filter at a flow rate of 2 m/sec or less, the ceramic filter having a filter layer at an inner cylindrical surface... | 06/14/1988 |
| 4746441 | Method of purifying brine for electrolytic chemical production The brine purifying system employs a multistage filtering apparatus comprising a plurality of the same filter units piled up one over another to form a plurality of cascaded filtering stages. When the filter layers of the filter units are clogged with uns... | 05/24/1988 |
| 4731230 | Process for the preparation of TiCl4 An improved process for the preparation of TiCl4 comprising (a) chlorinating a raw material containing titanium and vanadium impurities to produce a crude TiCl4 reaction product, (b) separating the crude reaction product into solid by-products... | 03/15/1988 |
| 4684494 | Ultrafiltration device in a pressurized water nuclear reactor Process and apparatus for ultrafiltration of the cooling water of a pressurized water nuclear reactor, during operation of the reactor. A fraction of the flow of pressurized water is withdrawn continuously in at least one cold branch (8) of the primary ci... | 08/04/1987 |
| 4619769 | Process for regenerating media filters used to filter geothermal brine A process for regenerating media filters used to filter geothermal brine, especially flashed and clarified, silica-rich brine, comprises flowing steam through the filter in a backflush direction at a rate and for a time duration agitating the filter media... | 10/28/1986 |
| 4544490 | Method and system for recovering coal fines from pipe line coal slurry A method and system for dewatering coal fines from the centrate of a pipeline slurry centrifuge, to recover the coal and purify the water, includes blending the centrate from the centrifuge with slurry from the pipeline in the proportion of about 4:1. The... | 10/01/1985 |
| 4528103 | Pressure filter A pressure filter for separating a liquor from mud liquor slurry and for concentrating a filter cake as a heavy slurry discharge comprising a tank having a ring of filter elements supported by a plate which separates the filter tank from a filtrate chambe... | 07/09/1985 |
| 4394272 | Liquid clarifier and method Method and apparatus for clarifying liquids wherein a flight conveyor in the settling tank has a forwarding run for removing sludge from the bottom of the tank and a return run which is selectively moved into and out of wiping cooperation with a filter be... | 07/19/1983 |
| 4343621 | Process for the production of aqueous solutions of sodium chloride from rock salt The invention relates to an open dissolving chamber for rock salt and to a process for the production, free from vapors, of concentrated, aqueous sodium chloride crude brine by continuously dissolving rock salt in this dissolving chamber. The dissolving c... | 08/10/1982 |
| 4315824 | Filtration of coal-derived liquids containing particulate solids A method of filtering a coal-derived liquid comprising; mixing the coal liquid with a filter aid material comprising metallic particles; filtering the thus-obtained mixture; subjecting the resulting filter cake material to partial combustion; and separati... | 02/16/1982 |
| 4297225 | Recycling centrifuge for the reduction of viscosity and gel strength of drilling fluids The invention relates to process and apparatus for reducing the viscosity and gel strength of drilling fluids, or muds, without any necessity of introducing additives, or chemicals, into the mud. It embodies, in particular, (i) a process wherein a hydrata... | 10/27/1981 |
| 4251367 | Wastewater treatment Improved clarity in treated wastewater is achieved by adding a flocculating agent following screening by fine mesh screening means, preferably a centrifugal screen separator. The effectiveness of the separator is improved, in turn, by preceding it in the ... | 02/17/1981 |
| 4227999 | Ultrafiltration process and apparatus In the ultrafiltration of liquids such as vinegar, wine, etc., the liquid to be filtered is fed from and back to a circulating tank through at least one filtration circuit including at least two serially connected, vertically spaced, non-horizontal filter... | 10/14/1980 |
| 4199446 | Oil/water separation process and apparatus A process and apparatus for the removal of oil from an oil in water emulsion, the apparatus comprising a vessel, means for passing the emulsion in an upward direction through the vessel and means for draining the vessel, a coalescer located in the vessel,... | 04/22/1980 |
| 3998735 | Apparatus and method for separating a mother liquor into a concentrated particulate fraction and a filtrate fraction An apparatus provides for continuous filtration of a mother liquor and continuous removal of solids from the filter element so that the apparatus need not be shut down for cleaning or replacement of the filter element. The solids are separated from the mo... | 12/21/1976 |
| 3948771 | Method and apparatus for separating suspended matter from a fluid by centrifugal force The fluid to be treated is directed along a main flow path and past a flow-off edge on the concave side of the main flow path to produce a stationary whirl at least contacting the main fluid flow and in which suspended matter is separated from the fluid, ... | 04/06/1976 |
