Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7922904 | Upward-flow manganese contact column The present invention provides an upward-flow manganese contact column for feeding raw water to a manganese catalyst-packed layer through a plurality of dispersion nozzles provided at the upper surface of a chamber by forming the chamber for allowing raw water to fl... | 04/12/2011 |
| 7416667 | Polyurethane oil de-emulsification unit A process for separating an aqueous emulsion including an aqueous phase and an non-aqueous phase into separated aqueous and non-aqueous phases, to provide a recovered non-aqueous phase, and to provide a recovered aqueous phase containing an acceptable level of the n... | 08/26/2008 |
| 7353634 | Methods of utilizing waste waters produced by water purification processing The invention relates to disposing of unwanted waste waters produced from purifying water. The methods of the present invention include applying waste water containing 0.15% by weight of the salts of Na, K, Ca, Mg, Fe, Cl, SO4, and CO3 and mixt... | 04/08/2008 |
| 7323104 | Water filtering device A water filter device includes a container (1) that has an opening for filling of water, and a filter unit (3) that is movable relative to the container (1). It is significant of the device that the filter unit (3) includes a filter eleme... | 01/29/2008 |
| 7314551 | Flow distribution apparatus Disclosed is a mixer-distributor-collector apparatus for use between beds of solid particles in a fluid-solid contacting vessel. The apparatus includes a solids retaining screen, fluid deflector, passageway, fluid distributor, and flow manipulator. The flow manipula... | 01/01/2008 |
| 6972091 | Ion exchange resin plant An ion exchange resin plant for the demineralizing or softening water with an arrangement that allows the plant to operate continuously. The plant tank is divided into to two separate compartments that work simultaneously. One compartment effects water demineralizat... | 12/06/2005 |
| 6797175 | Device for injecting a diverted fluid into a simulated moving bed separation process A device and process for injecting a diverted fluid into a simulated moving bed comprises a vessel containing beds of adsorbant Ai separated by plates Pi for distributing and extracting fluids, each plate comprising at least one pannel, each pannel comprising a sing... | 09/28/2004 |
| 6797167 | Composite filter medium and fluid filters containing same A composite filter medium for removing at least 99.95 percent of particulates of a size in the 3 to 4 micron range and dissolved chemical contaminants from a fluid and filters of various configurations employing the composite filter medium are disclosed. The composi... | 09/28/2004 |
| 6454948 | Distributor-mixer-extractor of fluids and associated process Device (DME) or panel for collecting, distributing, mixing or drawing off several fluids, at least one main fluid and at least two secondary fluids, that comprises at least: means for collecting a main fluid (3, 9), at least two injection and/or draw-off rails... | 09/24/2002 |
| 6447678 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 09/10/2002 |
| 6402959 | Fluid distributing-collecting system process A fluid distributing-collecting process using a device for bringing fluids and solids into contact comprises several distributor plates and several panels for mixing, distributing or extracting fluids. The system for practicing the method includes at leas... | 06/11/2002 |
| 6337015 | Refrigerator-mounted water filtration apparatus The present invention provides a water filtration apparatus for mounting on the exposed exterior surfaces of a refrigerator to provide filtered water to the interior of a refrigerator cabinet. The apparatus may be mounted on the exposed or visible surface... | 01/08/2002 |
| 6231763 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 05/15/2001 |
| 6221157 | Spin coating bowl exhaust system An apparatus for exhausting coating materials used in the process of spin coating a top surface of a wafer, the wafer having an edge and a bottom surface that is supported and rotated by a rotatable chuck attached by a shaft to a spin motor. The apparatus... | 04/24/2001 |
| 6156197 | Fluid distributing-collecting system and its process A fluid distributing-collecting system for a device for bringing fluids and solids into contact comprising several distributor plates and several panels for mixing, distributing or extracting fluids. The system comprises at least one level 1 chamber in co... | 12/05/2000 |
| 6132611 | Dynamic action filtration system A filtering device for removing contaminants from fluids, comprising a container having an interior chamber with a volume, at least one inlet, at least one outlet and at least one substantially non-granular material adhering outlet filter and at least one... | 10/17/2000 |
| 6042729 | Regeneration of water treatment media Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the... | 03/28/2000 |
| 6024871 | Single-phase fluid distributor-mixer-extractor for beds of granular solids Disclosed is a single-phase fluid distributor-mixer-extractor for separating beds of granular solids used in chromatography. The distributor includes a device for adding or removing a secondary fluid. The distributor further includes at least one calibrat... | 02/15/2000 |
| 5975434 | Showerhead system with turbulence inducing and water purification means A showerhead system with internal filtration media includes a fluid-tight pressure housing having a fluid inlet and a fluid outlet, the outlet substantially co-axial with the inlet, the housing having a substantially cylindrical internal surface. The syst... | 11/02/1999 |
| 5972214 | Column with distributor for allowing independent injection and/or removal of fluids The invention is a column for separating a substance from a liquid having a plurality of separable compounds. The column has at least a first and a second bed of granular solids separated by at least one device, the device has at least a collection device... | 10/26/1999 |
| 5858248 | On premise water treatment method for use in a post-mix beverage dispenser A water treatment method uses a removable, disposable cartridge having an internal mesh structure. A permanent heater heats water fed to the cartridge. Precipitated solids collect on the mesh surface provided temperature and residence time are appropriate... | 01/12/1999 |
| 5846411 | Single-phase fluid distributor-mixer-extractor for beds of granular solids Disclosed is a single-phase fluid distributor-mixer-extractor for separating beds of granular solids used in chromatography. The distributor includes a device for adding or removing a secondary fluid. The distributor further includes at least one calibrat... | 12/08/1998 |
| 5830360 | Pour through and pitcher mounted water filter for removal of parasite cysts, bacteria and viruses and method of filtrating water A gravity fed, pour-through water filtration device includes a chamber housing a spiral filter including a biocidal material and an annular holding chamber. Several porous separator disks, a volume of filtration media, and a cyst membrane are positioned b... | 11/03/1998 |
| 5755960 | Distributor allowing independent injection and/or removal of fluids A device for distributing, mixing, injecting, and/or removing several fluids, one of the fluids being a main fluid A1, and at least a first secondary fluid B1 and a second secondary fluid B2, said device having means (3, 4... | 05/26/1998 |
| 5728293 | External filter assembly for aquariums External filter assembly for aquariums includes a filter chamber containing a mechanical and/or chemical filter and a functionally active filter upstream of the mechanical filter for actively filtering the water before the water is filtered by the mechani... | 03/17/1998 |
| 5714077 | Liquid filtration system An automatically-regulated, self-flushing method of filtering a liquid suspension includes passing the suspension through a granular filter material. The flow of suspension is halted to relieve the pressure in the system, so facilitating the settling of t... | 02/03/1998 |
| 5562824 | Gravity water purifier A gravity percolation water purifier assembly. The assembly includes a covered storage container having a dispensing spigot. A flanged filtration chamber is supported beneath the cover to receive untreated water. A porous filter cartridge is sealed to an ... | 10/08/1996 |
| 5552057 | Water-purifying device A filter for disinfecting non-potable water is disposed in-line in a water delivery pipe, such filter having a plurality of chambers. The first chamber contains biocidal resin which imparts a biocide residue to the water as it passes there-through to kill... | 09/03/1996 |
| 5545319 | Sieve system for an ion exchange column Apparatus for use in an ion exchange unit or column comprising a riser pipe, a port coupled to one end of said pipe, a first rigid cylinder having apertures therein mounted concentrically on the pipe, a port coupled to the space between the pipe and said ... | 08/13/1996 |
| 5460719 | Modular flat filter assembly and method of making same A flat filter assembly may be installed in relatively narrow spaces which would otherwise be wasted such as the space beside a kitchen cabinet and the basin of a kitchen sink, inside a freezer door or on a countertop. The filter assembly includes a housin... | 10/24/1995 |
| 5453183 | Fluidized bed biological filter system for fish tanks A fluidized bed biological filter system for fish tanks having a primary container structure for receiving particulate material and a secondary container structure for receiving contaminated water from a fish tank. The front and rear walls of the primary ... | 09/26/1995 |
| 5320752 | Water purification system employing modular flat filter assembly A drinking water purification system includes a flat filter assembly which may be installed in relatively narrow spaces which would otherwise be wasted such as the space beside a kitchen cabinet and the basin of a kitchen sink, inside a freezer door or on... | 06/14/1994 |
| 5269922 | Water filter The present invention is related to a water filter and particularly to a water filter with a rotary filter tube, comprising a water filter cylinder and a plurality of filter leaf thimbles so that there is a maximum filter course in a certain filter space ... | 12/14/1993 |
| 5269919 | Self-contained water treatment system A water purifying system including two or more stages for removing organic and inorganic contaminants from source water. The system may be configured such that water is first passed through a biocidal resin, and then through a granular metal alloy and an ... | 12/14/1993 |
| 5188732 | Ion exchange resin holder An ion-exchange resin holder (18) to recover silver from photographic rinsing water with a perforate inlet (37) and outlet (29) resin restrainer between which a mass (38) of ion-exchange resin is restrained in the holder and a liquid restrainer (32) near ... | 02/23/1993 |
| 5122287 | Filtration system The filtration system provides a long horizontal flow path through buoyant filter media. The filter media is contained in a vessel and the relationship between the water level in the vessel and the amount of filter media is such that the media extends com... | 06/16/1992 |
| 5006246 | Baffled particulate material housing A fluid treatment device is described which includes a cylindrical housing with fluid inlet and outlet means at or adjacent opposite ends. Particulate material for treating fluid flowed through the device, is disposed within the housing, between the inlet... | 04/09/1991 |
| 4891142 | Moving bed filtration apparatus and method A bed of particulate material of varying sizes is located within a vessel. This bed comprises an upper and lower region. Particulate material is supplied continuously to the center of the upper region so as to form a peak shape which descends downwardly a... | 01/02/1990 |
| 4876014 | Method and apparatus for producing ultrapure water A method for purifying water or other aqueous media in which a stream of the aqueous media is introduced into a fixed bed of a purification media and turbulent flow through the fixed bed is induced to permit intimate contact between the aqueous media and ... | 10/24/1989 |
| 4861472 | Apparatus for filtration of a suspension The invention relates to a self-cleaning filter in which the suspension to be filtered is introduced into the filter media at a lower portion of the apparatus. The dirtied filter media flows out the bottom of the apparatus by gravity, while the material b... | 08/29/1989 |
