The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 7438799 | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants A portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants includes a portable, refillable and hand-holdable vessel for holding and pouring water having a spout and, inside the portable, refillable and hand-holdable ... | 10/21/2008 |
| 7354510 | Extracting apparatus A mechanism for introducing pressurized air into an extracting cartridge comprises an air pump, an on-off valve, and a pressure sensor for detecting an internal pressure within the extracting cartridge. The on-off valve is turned on in order to introduce the pressur... | 04/08/2008 |
| 7284680 | Electrovalve dispenser device for a refrigerator The device comprises a valve body with an input adapted to be connected to a water supply source, and with at least a first and second output. The body is provided with at least a first and a second electrovalve with direct actuation, whose hydraulic inputs are inte... | 10/23/2007 |
| 7276169 | Method for filtering water in an aquarium, a water cultivation tank and similar water bonds, and corresponding filtering system A method for filtering the water of an aquarium, a water cultivation tank or similar water bonds, by means of a filtering system comprising a closed vessel and defining a chamber, a filtering body housed in the chamber, a circulation pump having a suction duct, comm... | 10/02/2007 |
| 7270747 | Storm water drain system An in-line storm water drain system and a filter basket for a storm water drain system are provided in which the storm water drain system has a housing having an inlet and outlet thereinto and interior walls forming a plurality of chambers therein. The filter basket... | 09/18/2007 |
| 7258788 | Circular clarifier apparatus and method This application relates to a circular clarifier for separating and removing separable matter, such as suspended solids, from a liquid. The invention may be used, for example, for separating return activated sludge from clarified liquor using a gas flotation process... | 08/21/2007 |
| 7246472 | Drain and a building structure having a drain A floor drain (100) comprising a bottom part (4) having at least one discharge opening (5), a front part being integral with the bottom part (4) and having a first part (3b) being inclined to said bottom part at an angle bei... | 07/24/2007 |
| 7229560 | Sack-based processes for recovering oil floating on water One or more water- and oil-porous containers or sacks are made of a pair of mesh sheets affixed together and stiffened around their perimeter. The sacks can be partially filled with a multitude of tubular bodies made of an oil-entrapping polymer, which have their lo... | 06/12/2007 |
| 7182868 | Device for filtering fluid substances, used for a meat materials injecting machine An apparatus for filtering fluid substances is used with a machine for injecting meat products. The device comprises a container (4) comprising filter units (3a, 3b) communicated independently with a suction outlet (6) throu... | 02/27/2007 |
| 7144500 | Variable speed waste removal system The invention is directed to a system for removing waste material from a fluid flowing in a channel. This system may incorporate the use of a trap for collecting the waste material while allowing the fluid to pass; a rake for removing the waste material away from th... | 12/05/2006 |
| 7096627 | Rain head A rain head is disclosed having three filters through which water entering an inlet to the rain head must pass before passing out through an outlet from the rain head. The filters remove successively smaller particles from the water. ... | 08/29/2006 |
| 7094338 | Method of making and using a filter in the form of a block of agglomerated copolymer fragments One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the fil... | 08/22/2006 |
| 7048878 | Process of forming oil-absorbent bodies A process for forming an oil-sorbent composition of matter with bound combinations of styrene-butadiene-styrene (SBS) and ethylene propylene diene monomer (EPDM) utilizes a low-temperature extrusion process. The SBS, or both materials, may be in the form of multitud... | 05/23/2006 |
| 6954701 | Method for remote monitoring of water treatment systems A method of monitoring the daily operating performance parameters for water treatment processes through the collection of localized data. The data is manipulated to generate preconfigured performance, maintenance, and quality assurance reports and further provide au... | 10/11/2005 |
| 6953523 | Portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants A portable, refillable water dispenser serving batches of water purified of organic and inorganic pollutants includes a portable, refillable and hand-holdable vessel for holding and pouring water having a spout and, inside the portable, refillable and hand-holdable ... | 10/11/2005 |
| 6939471 | Method for determining a treatment parameter on a haemofiltration device, and haemofiltration device for applying the method A method for determining a treatment parameter on a haemofiltration device, as well as a haemofiltration device for applying the method, based on the recognition that a determination method known from haemodialysis can, with little modification, be transferred to ha... | 09/06/2005 |
| 6881344 | Method for setting up a dialysis treatment in a dialysis machine A method of setting up a dialysis treatment in a dialysis machine (1) provided with a device (6) for setting up the dialysis treatment, possessing a microprocessor (11), a data input (12, 13) and a screen (13), comprises the steps ... | 04/19/2005 |
| 6839641 | Automated system for rating pipe segments in a water distribution system A computer-implemented process rates pipe segments in a water distribution system, the water distribution system including pipe segments and hydrants. Information gathered from maintenance tasks and inspections performed on the pipe segments and hydrants within the ... | 01/04/2005 |
| 6830693 | Method for setting up a dialysis treatment in a dialysis machine A method of setting up a dialysis treatment in a dialysis machine may include the steps of determining conditions of a dialysis treatment adapted to a specific patient, determining a first function (U(t)) of a first quantity (U) characterizing the dialysis treatment... | 12/14/2004 |
| 6811707 | Dialysis machine and method of checking the functionality of a dialysis machine A dialysis machine may include a main control unit provided with a memory that stores the parameters of a dialysis treatment carried out on a patient and a plurality of slave control units interacting with the main control unit. The slave control unit may provide th... | 11/02/2004 |
| 6751527 | Heat and material balance method of process control for petrochemical plants and oil refineries A method comprising: a) selecting a loading variable from operating variables, the loading variable being directly related to total energy input into the system and equipment constraint of the system; b) selecting a performance specification variable w... | 06/15/2004 |
| 6562246 | Pressurized backflush system A filter backflushing system including an accumulator containing a pressurized bladder which propels a supply of backwash fluid contained within the accumulator in a reverse direction through a filter element. While the backwash fluid is pumped within the... | 05/13/2003 |
| 6560543 | Method for monitoring a public water treatment system A method of monitoring the daily operating performance parameters for water treatment processes through the collection of localized data. The data is manipulated to generate preconfigured performance, maintenance, and quality assurance reports and further... | 05/06/2003 |
| 6383389 | Wastewater treatment system and method of control A wastewater treatment system for treating a wastewater stream from industrial and municipal sources uses a control system to sequence and supervise the treatment steps in a batch flow mode of operation or a continuous flow mode of operation. In operation... | 05/07/2002 |
| 6332110 | Method for monitoring advanced separation and/or ion exchange processes A method of monitoring advanced separation and/or ion exchange processes through the collection of localized data. The data is manipulated to generate preconfigured performance, maintenance, quality assurance, quality control, regulatory, cost reports, pe... | 12/18/2001 |
| 6325775 | Self-contained, transportable blood processsing device A blood processing device is self-contained within a case, which sized to enable hand transport. Self-contained in the case is a blood separation device, which, for example, can comprise a centrifuge. A controller is also self-contained in the case. The c... | 12/04/2001 |
| 6315901 | Liquid chromatography A liquid chromatography includes a mobile phase quantity integrator for calculating a quantity of a mobile phase used in the liquid chromatography and sent by a fluid pump after a waste fluid in a drainage reservoir has been emptied, a rinsing fluid quant... | 11/13/2001 |
| 6303024 | Three batch fill/settle/draw electronic controller for use with a reverse osmosis unit An electronic controller for controlling the fill, settle and draw operations of three settling tanks which are used with a reverse osmosis unit. The three settling tanks provide a pair of liquid level input signals which indicate the water level within e... | 10/16/2001 |
| 6159359 | Modular filter apparatus A modular filter apparatus is formed from stacked filter modules. Slurry to be filtered flows into the apparatus through a flowmeter and check valve into a header. The flow of slurry then branches off through feeders to each of the filter modules. Connect... | 12/12/2000 |
| 6126815 | Sequential air dissolved floatation apparatus and methods Sequential DAF apparatus and methods providing zero pool and nonmechanical waste material removal are disclosed which include a number of floatation tanks each arranged to operate either independently or sequentially, each tank has a conical shaped bottom... | 10/03/2000 |
| 6090294 | Apparatus for the purification of water and method therefor An apparatus and method for the purification of contaminated water whereby the contamination level of the wastewater is automatically monitored and treatment self-adjusted and continued until the desired level of purification is reached. Specifically, if ... | 07/18/2000 |
| 6027638 | Automatic filtration and extraction device and method An improved automatic filtration and extraction device is disclosed which comprises a base defining at a top end a cavity area which tapers downwardly and inwardly from the top end to define a chamber for a portion and then defines a plurality of effluent... | 02/22/2000 |
| 6007721 | Method and system for regulating the addition of oxygenated gas into a biofilter with rising currents The invention relates to a method for regulation of aeration in a biological filter of the type comprising conveyance means (3) bringing water to be filtered into the lower part of the filter, a filter bed (2) acting as a support to the biomass, means of ... | 12/28/1999 |
| 6001244 | Performance water purification system The invention relates to a new water purification system design that uses reverse osmosis membrane filtration and optional ultra violet light treatment. The new system creates the potential for achieving a higher standard of performance for point-of-use r... | 12/14/1999 |
| 5900139 | Filter press for reducing the water content of solid materials and/or sludges A filter press for reducing the water content in a starting material including a pressure chamber with a stationary lower plate and five hydraulically mobile chamber walls for applying pressure to the starting material.... | 05/04/1999 |
| 5879559 | Valve controller for water conditioning system A control unit for operating a valve system in a water conditioner system includes a drive motor having an output shaft coupled to the valve system, a valve position slide switch, an electronic regeneration controller, and a settable mechanical clock. The... | 03/09/1999 |
| 5866002 | Apparatus for activation of a digesting agent and method of its use This invention provides an apparatus for activation of a digesting agent for an organic material, the apparatus including a tank, a device for activating the digesting agent in the tank, and a device for enabling the activated digesting agent to contact t... | 02/02/1999 |
| 5772867 | Fluid filtering machine with filtering membrane controlled by PLC A fluid filtering machine is provided with a filtering membrane made up of filtering substance that collects on a filtering core in a filtering tank and is controlled by a programmable logic controller. The machine includes a raw water tank, a purified wa... | 06/30/1998 |
| 5753105 | Automatic filtration and extraction device and method An improved automatic filtration and extraction device is disclosed which comprises a base 17 defining at a top end a broadened cavity area which tapers downwardly and inwardly from the top end to define a chamber for a portion and then defines a pluralit... | 05/19/1998 |
| 5665226 | Substance collecting apparatus for precipitation classifying device The object of the present invention is to provide a substance collecting apparatus for a precipitation classifying device which is capable of automatically transmitting the classified substances to a next process in a sterile atmosphere even during a subs... | 09/09/1997 |