Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8007667 | Filtration device with releasable additive A filtration device is provided that includes a filter component and an additive component. The filter component includes concentrically arranged filtering elements disposed in a filter-in-filter configuration. The additive component includes at least one additive m... | 08/30/2011 |
| 7931802 | Water treatment system A water treatment system having a biological treatment step (a secondary treatment step) and a membrane separation step (a tertiary treatment step), wherein a portion of the raw water to be treated and/or a portion of the primarily treated water in the pretreatment ... | 04/26/2011 |
| 7563368 | Filtration device with releasable additive A filtration device is provided that includes a filter component and an additive component. The filter component includes concentrically arranged filtering elements disposed in a filter-in-filter configuration. The additive component includes at least one additive m... | 07/21/2009 |
| 7429324 | Device for in-line preparation of liquid for an extracorporeal blood treatment apparatus A method for in-line preparation of liquid for an extracorporeal blood treatment apparatus that makes provision for placing a filter in correspondence with each of two successive filtration stations, for carrying out a liquid preparation cycle, for removing the filt... | 09/30/2008 |
| 7427351 | Water preconditioning system A water preconditioning system is provided. The system includes a circulating tank configured to receive therein water, an ozone machine in fluid communication with the circulating tank and configured to add ozone to the water as the water circulates through the ozo... | 09/23/2008 |
| 7413649 | Treatment apparatus with modular chemical containing units having one-way valve assemblies A fluid treatment system that includes at least one treatment module (“pod”) with rigid and impermeable inner and outer surfaces, and an annular center passage which is designed to provide an alternative flow path during the pod backwashing process. At least one... | 08/19/2008 |
| 7364657 | Integrated system for on-site cell acquisition, processing, and delivery Numerous embodiments of a system and method for treating cardiac tissue are described. In one embodiment, bone marrow cells are extracted from a patient. The cells are then processed to isolate mononuclear cells, which can then be delivered back near the cardiac tis... | 04/29/2008 |
| 7354393 | Magnetic foot therapeutic apparatus and method Provided are exemplary embodiments of a magnetic therapy device, which may include a rotatable housing, a first magnetic element configured to rotationally couple to said rotatable housing, a second magnetic element adjacent to said rotatable housing that affects th... | 04/08/2008 |
| 7335298 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 02/26/2008 |
| 7300575 | Portable filter system A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base... | 11/27/2007 |
| 7270749 | Pump system A pumping system comprising: (a) an inlet adapted for connection with a supply of low pressure water; (b) a filtration unit in fluid communication with the inlet, wherein the filtration unit filters impurities from the low pressure water so as to discharge a flow of... | 09/18/2007 |
| 7244357 | Pumps for filtration systems Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure... | 07/17/2007 |
| 7232517 | Passive freestanding portable liquid filtration device A freestanding portable liquid filtration device (18) having an upper housing (24), a lower housing (32) and a base (36) which are secured together with an interference fit, with an enclosed lower portion of the upper housing (24) ... | 06/19/2007 |
| 7208084 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 04/24/2007 |
| 7153438 | Water treatment compositions with masking agent A composition for disinfecting contaminated drinking water. The composition can include a disinfecting agent for disinfecting or sanitizing the water and a masking agent for masking or minimizing undesired characteristics of the disinfecting agent, such as taste and... | 12/26/2006 |
| 7135110 | Denitrification system for nitrified wastewater or nitrified water A denitrification system for denitrified wastewater or nitrified water treatment using a detergent or detergent-like compound comprising available carbon. The system comprises a plurality of interconnected tanks including a mixing tank which feeds detention tanks wh... | 11/14/2006 |
| 7115206 | Method for in-line preparation of liquid for an extracorporeal blood treatment apparatus A method for in-line preparation of liquid for an extracorporeal blood treatment apparatus that makes provision for placing a filter in correspondence with each of two successive filtration stations, for carrying out a liquid preparation cycle, for removing the filt... | 10/03/2006 |
| 7108788 | On-site treatment method of food waste generated from collective residence or institutional food service facilities Disclosed is an on-site treatment method of food waste generated from multi-unit dwellings and institutional food service facilities, by transporting wastewater-containing food waste to a separation chamber by use of domestic wastewater or an additional transporter;... | 09/19/2006 |
| 7048852 | Method and apparatus for treating water or wastewater to reduce organic and hardness contamination A method of treating liquid including mixing coagulant with the liquid, introducing mixed coagulant and liquid into a primary reaction zone, containing an agitator, of a reactor which is substantially concentrically positioned with respect to a secondary reaction zo... | 05/23/2006 |
| 6908546 | Apparatus and method for producing purified water having microbiological purity A process is provided to produce water that will meet the specifications of the United States Pharmacopeia Inc. for Purified Water and Water for Injection, and water for dialysis as circumscribed by the American Association for Advancement of Medical Instrumentation... | 06/21/2005 |
| 6905598 | Porous grog composition, water purification device containing the porous grog and method for making same A porous grog with a body composition of water, clay and combustible material. Further, an earthenware water purification filter utilizing the porous grog in the body composition of the filter. A water purification system incorporating said filter, said water purifi... | 06/14/2005 |
| 6884347 | Wastewater treatment system Systems and methods for treating wastewater are disclosed. A wastewater treatment apparatus may include an intake unit, one or more gravity separation air flotation units, and a discharge unit. The units or components may be modular and compatible, have standardized... | 04/26/2005 |
| 6866776 | Heater for massage nodes and massage therapy device including same A base for warming massage nodes of a hand-held therapeutic device includes a housing, terminals connectable to a power supply, a seat for seating the massage nodes, and a heating circuit positioned to provide heat proximate to the massage nodes when the massage nod... | 03/15/2005 |
| 6843908 | Multistage immersion type membrane separator and high-concentration wastewater treatment facility using same A multistage immersion type membrane separator in which an air diffuser is disposed under a filtration part immersed in a treatment tank, characterized in that: the filtration part has plural plate-like membrane cartridges arranged in a vertically parallel multistag... | 01/18/2005 |
| 6762057 | Separation apparatus including porous silicon column A sample separation apparatus including a porous, or rough, capillary column. The porous capillary column includes a matrix which defines pores, and may be formed from a material such as porous silicon. Alternatively, the capillary column may have a rough surface of... | 07/13/2004 |
| 6602414 | Molecule separation device and method combining multiple filtration media A molecule separator device for isolating molecules having at least two separable properties and within a solution. The device includes a housing, and at least two molecule collection media disposed within the housing, whereby each such medium captures mo... | 08/05/2003 |
| 6602410 | Water purifying kits A kit for purifying water comprises a first container for receiving untreated water, and a second container for receiving purified water and having a dispensing spigot. A water purification composition, when mixed with water in the first container, produc... | 08/05/2003 |
| 6592754 | Apparatus and process for removing metallic particles from effluent liquid waste An apparatus for separating solid particles from the suction effluent of, for example, a dental office, preferably driven by a dental office vacuum pump, includes a surge tank for accommodating effluent overfill connected to a sedimentary deposit tank for... | 07/15/2003 |
| 6533946 | Apparatus and method for recycling drilling slurry An apparatus and method for recycling drilling mud contaminated with particulates, consists of channelling a stream of contaminated slurry onto a screen deck, with the partly cleansed liquid entering a mixing tank. Liquid within the tank is continually mi... | 03/18/2003 |
| 6517733 | Continuous flow liquids/solids slurry cleaning, recycling and mixing system A continuous flow slurry cleaning method, apparatus and system including a filter portion and a mud re-circulation manifold for receiving partially filtered slurry, containing the slurry and mixing the slurry with liquid ready for use and thereby enabling... | 02/11/2003 |
| 6489132 | Methods and apparatus for determining specific analytes in foods and other complex matrices Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a r... | 12/03/2002 |
| 6475382 | Treatment unit for treating a fluid and method thereof A treatment unit is disclosed for treating a fluid in continuous mode. This treatment unit provides the opportunity to carry out simultaneously an enzymatic transformation and a capture of a fluid element. The unit has a reservoir with a fluid inlet for r... | 11/05/2002 |
| 6406630 | Curtain assembly for waste treatment A waste treatment apparatus (10) including one or more vertically oriented curtains (11) each formed of mesh material having a minimal aperture size of 0.001 mm, means for applying liquid waste to said curtain(s) located above said curtain (17, 15) and co... | 06/18/2002 |
| 6402952 | Apparatus and method for extraction of chemicals from aquifer remediation effluent water An apparatus and method for extraction of chemicals from an aquifer remediation aqueous effluent are provided. The extraction method utilizes a critical fluid for separation and recovery of chemicals employed in remediating aquifers contaminated with haza... | 06/11/2002 |
| 6391195 | Apparatus for cleaning clearwater drilling muds Apparatus and a process are provided for treating used drilling mud, particularly that produced during clearwater drilling. A structural and highway transportable skid comprises two or more settling tanks connected in succession. Flocculation aids settlin... | 05/21/2002 |
| 6358415 | Vortex sewage disposal apparatus A vortex sewage disposal apparatus for the disposal of construction sewage, comprising a hopper-type casing, a water inlet pipe, a lower outlet and a frame; within the water inlet pipe these are provided rapid-mixing blades, on the wall of the inlet pipe ... | 03/19/2002 |
| 6358411 | Wastewater treatment plant A wastewater treatment plant comprises a first containment vessel, a second containment vessel forming an aerobic treatment chamber, the second containment vessel having an inlet and an outlet, there being a compartment formed in the first containment ves... | 03/19/2002 |
| 6342159 | Shipboard biomechanical oil water separator Disclosed is a biomechanical apparatus and method for the continuous phase-separation and biological treatment of ship bilgewater contaminated with petroleum and biodegradable materials. The apparatus includes a pumping system attached directly to the bil... | 01/29/2002 |
| 6325898 | Constituent separation system A device allows for continuous regulation of the composition of a fluid mixture that includes at least two components of different polarities. The device is designed, for example, to be inserted in a separation system that the device supplies with a carri... | 12/04/2001 |
| 6274375 | System and method for vent hood cleaning and comprehensive bioremediation of kitchen grease A commercial and institutional kitchen retrofit system for 1. the automatic daily cleaning of commercial kitchen exhaust hoods and flues, 2. a low pressure, low volume, recirculating cleaning system designed for the removal of oily residue from hard surfa... | 08/14/2001 |
