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| Number | Title | Issue Date |
| 7377957 | Method and construction of filters and pre-filters for extending the life cycle of the filter bodies therein A method of utilizing a filter having a filter body removing solid particles from a fluid, in order to extend the life cycle of the filter body before cleaning or replacement thereof is required, characterized in applying to the fluid, upstream of the filter body, a... | 05/27/2008 |
| 7175695 | Apparatus and method for enhancing filtration Disclosed is a filtration enhancement apparatus and an associated method. The apparatus includes a number of electromagnetic grids that are placed in series. The first grid conditions ambient particles to generate particles with both a positive and a negative charge... | 02/13/2007 |
| 7163572 | Air purifier An air purifier for removing particles in air includes an outer casing, and an ionizer module. The ionizer module includes a power unit and an ionizing electrode unit, electrically connected to the power unit. The ionizing electrode unit includes a first electrode s... | 01/16/2007 |
| 7090717 | Air purifier An air purifier has a simply manufactured and assembled ionizer, which improves the charging efficiency for dust particles using multi-directional discharge and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ionizer includes... | 08/15/2006 |
| 7048780 | Air purifier An air purifier has a simply manufactured and assembled ionizer, which increases the charging efficiency for dust particles through maximally increased discharge spaces and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ioni... | 05/23/2006 |
| 7019244 | Electrostatic precipitator An electrostatic precipitator that removes zinc whiskers from cooling air provided to cool components in an electronics enclosure. The electrostatic precipitator comprises an ionizer configured to apply a charge to zinc whiskers suspended in the cooling air. The ele... | 03/28/2006 |
| 6955075 | Portable liquid collection electrostatic precipitator A portable liquid collection electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a tubular collection electrode, a reservoir for a liquid, and a pump. The pump pumps the liquid into t... | 10/18/2005 |
| 6881246 | Collecting device for suspended particles A collecting device for collecting suspended particles includes a mobility analysis device; a collecting container connected to an outlet of the mobility analysis device; a discharge electrode disposed inside the collecting container for charging the particles insid... | 04/19/2005 |
| 6783575 | Membrane laminar wet electrostatic precipitator A laminar flow, wet electrostatic precipitator (ESP) with planar collecting electrodes preferably made of membranes, such as a woven silica fiber. The collecting electrodes are spaced close to planar discharge electrodes to promote laminar flow (Re | 08/31/2004 |
| 6368391 | Electronically enhanced media air filtration system Disclosed is a portable air filtration system for removing contaminants from room air. In one embodiment, the air filtration system comprises a power supply and an air blower module electrically connected to the power supply. The air filtration system fur... | 04/09/2002 |
| 6355178 | Cyclonic separator with electrical or magnetic separation enhancement A cyclone or hydrocyclone for separating fluids and particles includes an electrostatic charge generator, a direct current power source, a magnet or an electromagnet for augmenting the centrifugal separation forces generated by the cyclone or hydrocyclone... | 03/12/2002 |
| 5779764 | Method for obtaining devolatilized bituminous coal from the effluent streams of coal fired boilers A method for obtaining devolatilized coal, utilizing a multi-zone electrostatic precipitator, from the air-borne effluent streams of coal fired boilers includes the steps of directing an effluent stream, generated by the combustion of coal and carrying a ... | 07/14/1998 |
| 5766319 | Electrofilter In electric filters with a negative corona, an aerosol is formed in the entrance area if ammonia is present in the flue gas, reducing the separation performance of the filter. To avoid this, spray electrodes and separation electrodes provided in the entra... | 06/16/1998 |
| 5711788 | Dust neutralizing and floculating system A dust neutralizing and flocculating system used in an air cleaning system for removing contaminants contained in indoor air including a radio frequency generating electrode and an ion generating electrode. Fine particles passing through a moderately effi... | 01/27/1998 |
| 5302190 | Electrostatic air cleaner with negative polarity power and method of using same An electronic air cleaner includes a housing having a fluid inlet and a fluid outlet for creating a fluid stream through the housing. Inside the housing is provided a set of first parallel conductive plates and a set of second parallel conductive plates, ... | 04/12/1994 |
| 5203993 | Method and apparatus for removing salt from sea water A method and apparatus for removing substantial portions of the saline content in salt water by passing air bubbles through the salt water in a tank to produce droplets having substantially reduced salt content and collecting said reduced salt droplets in... | 04/20/1993 |
| 5188646 | Adjustable air filter An adjustable air filter for use in heating, ventilating, cooling, and forced air systems. The air filter includes a media for filtering air and adapted to be cut with scissors, and a frame embracing the peripheral edges of the media. The frame includes a... | 02/23/1993 |
| 5061296 | Air purification system An air purification system for subjecting air to a complex electrical field including sensors and a monitor/controller for monitoring effectiveness, operational conditions of the electrical field and the system, and ambient conditions of the air being pur... | 10/29/1991 |
| 5034032 | Air cleaner and air filter An air cleaner and an air filter for removing charged ozone in the air includes an air filter having a carbon filter for adsorbing charged ozone in an air path of the air cleaner and converting ozone adsorbed in the carbon filter to oxygen and carbon diox... | 07/23/1991 |
| 4877427 | Dry electrostatic precipitator An electrostatic precipitator comprises an upright cylindrical vessel (10) containing a number of vertically spaced precipitator stages (12). Ducting (18) provides a path for gas flow from an inlet (14) to an outlet (15) passing successively through each ... | 10/31/1989 |
| 4734105 | Process and device for the removal of solid or liquid particles in suspension from a gas stream by means of an electric field A method and device for removing solid or liquid particles contained in suspension in a gas stream by an electric field, wherein the gas stream flow is directed past ion sources which simultaneously act as field electrodes. The suspended particles are the... | 03/29/1988 |
| 4726814 | Method and apparatus for simultaneously recovering heat and removing gaseous and sticky pollutants from a heated, polluted gas flow The gas flow is ionized by its being caused to pass an emission electrode means (2) so that ions are formed and the polluant particles are given an electric charge. The particles are deposited by electrostatic attraction onto a combined collector electrod... | 02/23/1988 |
| 4675029 | Apparatus and method for treating the emission products of a wood burning stove A pollutant removal/heat exchange apparatus is mounted to a wood burning stove to receive the emission products from the stove. The apparatus comprises a plurality of vertically aligned tubular electrodes which define vertical through passageways. Negativ... | 06/23/1987 |
| 4534776 | Air cleaner Relatively dust-free air to cool electronic equipment, for example, is provided by apparatus which includes at least first and second rows of filamentary electrodes disposed in an air stream and aligned with its direction of flow. Alternate rows of electr... | 08/13/1985 |
| 4522634 | Method and apparatus for automatic regulation of the operation of an electrostatic filter The operation of one or more full-size electrostatic filters for removing solid impurities from gaseous carrier media is regulated automatically as a function of variations of breakdown potential of a miniature electrostatic filter which is installed in t... | 06/11/1985 |
| 4406672 | Process and installation for the intermittent cleaning of dust-laden crude gases An intermittently operated apparatus for cleaning dust laden gases has a gas-tight housing, a pair of spaced gas-permeable walls holding a filter bed consisting of granular filter material. A centrally located conveying pipe is mounted to the housing for ... | 09/27/1983 |
| 4308105 | Method of and apparatus for decontamination of radioactive waste water A method of and an apparatus for removing radionuclides from a radioactively contaminated liquid, especially water from the sump of a nuclear electric-power generating plant, in which the waste water is evaporated to produce a vapor phase containing radio... | 12/29/1981 |
| 4289504 | Modular gas cleaner and method A modular gas cleaner can consist of an elongated box having an inlet opening and an outlet opening. The interior of the elongated box is divided into a plurality of elongated passageways by partitioning means within the box. The internal partitions of th... | 09/15/1981 |
| 4247307 | High intensity ionization-wet collection method and apparatus In the pipe-type of high intensity ionization-wet collection method and apparatus for particle removal from a gas stream, corona current is distributed between adjacent ionization and collection zones.... | 01/27/1981 |
| 4162144 | Method and apparatus for treating electrically charged airborne particles A method and apparatus for treating electrically charged airborne particles to reduce deposition of the particles on walls and other exposed surfaces in an enclosed area. Air containing positively charged particles exhausted from a first group of electros... | 07/24/1979 |
| 4119416 | Electrostatic precipitator An electrostatic precipitator comprises at least a pair of parallel collecting plate electrodes between which is disposed an auxiliary plate electrode biased at an opposite potential to the potential applied to the collecting plate electrodes and a corona... | 10/10/1978 |
| 4072477 | Electrostatic precipitation process An electrostatic precipitator which operates on the principle of mutual repulsion of charged particles to a grounded wall. The solid particle laden gas stream enters a collecting section where additional particles in the form of droplets, normally water, ... | 02/07/1978 |
