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 |
| 7267712 | Planar electric precipitator A plane type electric precipitator includes an electrode plate of plane shape, made of electricity-conducting material; a collecting plate, parallel to the electrode plate and made of electricity-conducting material; a plurality of electrode units, placed on the ele... | 09/11/2007 |
| 7258730 | Air purifier Disclosed is an air purifier with a small size, having an excellent air purifying capacity, capable of preventing a large amount of ozone from being generated, the ozone harmful to a human body. The air purifier includes a case, a pair of discharge electrodes provid... | 08/21/2007 |
| 7235123 | Particle transport and near field analytical detection Particle collection, transport, and detection systems are disclosed. The systems are uniquely adapted for collecting or concentrating particles from a flowing medium and then transporting the collected particles to a desired location or for subsequent analysis. Elec... | 06/26/2007 |
| 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 |
| 7156565 | Driver for opening and closing dual-blade shutter adapted to be reset without re-opening shutter In a camera, a dual-blade shutter has a pair of shutter blades supported for opening and closing movement to uncover and re-cover an exposure aperture, and a shutter driver that projects into respective overlapping slots in the shutter blades and is supported for sh... | 01/02/2007 |
| 7141098 | Air filtration system using point ionization sources A filtration system for filtering particulates from air. A plurality of point ionization sources are positioned in the proximity of the periphery of an air flow channel and being oriented to generate ions in the proximity of the air flow channel in a direction gener... | 11/28/2006 |
| 7119298 | Method for electrostatically separating particles, apparatus for electrostatically separating particles, and processing system An electrostatic separation apparatus for conductive particles and insulating particles with reduced separation time and improved separating capability, comprises a substantially flat-plate shaped bottom electrode (26) provided on lower side, a substantially ... | 10/10/2006 |
| 6953494 | Sorbents and methods for the removal of mercury from combustion gases A method for removing mercury and mercury-containing compounds from a combustion gas in an exhaust gas system has the steps of providing a mercury sorbent; injecting the mercury sorbent into a stream of the mercury-containing combustion gas for a sufficient time to ... | 10/11/2005 |
| 6941065 | Camera interlocks that ensure proper movement of film The camera of this invention has a film cassette compartment, a film spool (13), a film exposing area, and an interlock that prevents moving exposed film from the film cassette. With the camera, a film cassette (2) is loaded into the film cassette comp... | 09/06/2005 |
| 6926758 | Electrostatic filter An electrostatic filter (1) has a chamber (11) into which a gas stream is introduced. An ioniser (19) in the form of an electrode array (20) is located in the chamber (11) and creates an ionising zone through which the gas stream p... | 08/09/2005 |
| 6919698 | Electrostatic fluid accelerator for and method of controlling a fluid flow An electrostatic fluid accelerator includes a first number of corona electrodes and a second number of accelerating electrodes spaced apart from and parallel to adjacent ones of the corona electrodes. An electrical power source is connected to supply the corona and ... | 07/19/2005 |
| 6818043 | Vapor-phase contaminant removal by injection of fine sorbent slurries A method for efficiently removing vapor-phase contaminants from gas streams is described. A powdered adsorbent such as activated carbon is ground into a fine powder by wet grinding to form a slurry. Chemicals are added to the slurry to impregnate the sorbent to enha... | 11/16/2004 |
| 6224652 | Method and device for the agglomeration of particles in a gaseous flow This invention relates to a method and a device for agglomerating particles in a gaseous flow through an acoustical agglomeration chamber (3). According to the invention a portion of the flow at the outlet of the chamber is selectively extracted by preferring ... | 05/01/2001 |
| 5591412 | Electrostatic gun for injection of an electrostatically charged sorbent into a polluted gas stream An electrostatic gun for electrostatically charging and injecting sorbent particles into a flue gas stream to contact, and electrostatically charge, pollution particles in that flue gas stream. The electrostatic gun is for inclusion as a component of an a... | 01/07/1997 |
| 5492677 | Contaminated air purifying apparatus A contaminated air purifying apparatus capable of decreasing particles such as dust floating in air, soot produced by a combustion engine and the like and air pollutants such as nitrogen oxides (NOx) contained in exhaust gas. Particulates such as dust, so... | 02/20/1996 |
| 5332562 | Method for removing particulate matter and gases from a polluted gas stream The steps of the method of the invention are preferably practice on apparatus consisting of components arranged in a closed system for removing particulate matter and gases from a polluted gas stream that includes a sorbent particulate charging and inject... | 07/26/1994 |
| 4765803 | Method and device for agglomerating electrically nonuniformly charged-up solid or liquid particles suspended in gas streams Method and device for agglomerating particles of opposite electrical charge suspended in gas streams, in which two partial gas streams (3) are provided, in which the particles are alternatingly charged with positive and negative ions in a manner such that... | 08/23/1988 |
| 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 |
| 4699633 | Method for treating an aerosol to remove suspended particles therefrom This invention provides a method for treating an aerosol comprising electrostatically charged particles, suspended in a gas, to separate said particles from said gas, which comprises mixing said aerosol, in the absence of electrostatically charged water p... | 10/13/1987 |
| 4684063 | Particulates generation and removal A mixer/charger is used simultaneously to mix and electrically to charge a fluid or fluid-like material, and such electrically charged product is distributed into another fluid for various purposes. In one case the charged product may be mixed with partic... | 08/04/1987 |
| 4671805 | Method for airport fog precipitation Atmospheric occurrences that decrease visibility, particularly fog, smoke, smog and the like, are cleared at sites such as airports by an array of EGD spray units emitting submicron size charged water droplets to attach to airborne particulates and electr... | 06/09/1987 |
| 4169714 | Removal of fine particles from a gas stream by solid particle addition in venturi contactor Fine particles contaminating a gas stream are removed from the gas stream by moving the gas stream at a velocity of between 50 and 500 feet per second; dispersing relatively larger solid collector particles in the gas stream to cause the collector particl... | 10/02/1979 |
| 4154585 | Fluidized bed particulate collectors A fluidized bed, particulate collector system wherein, in one embodiment, the bed particles have applied thereto at the surface thereof, an additive that serves to adhere particulate, once collected, to the bed particles. The bed particles and/or additive... | 05/15/1979 |
| 4146371 | Electrofluidized bed agglomerator and method of agglomerating An electrofluidized bed agglomerator and method of agglomerating which comprises agglomerating submicron (and/or supermicron) particulates with a liquid, said liquid acting as a bond between particulates of the agglomerate thus formed to maintain the inte... | 03/27/1979 |
| 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 |
| 4070162 | Method of agglomerating particles in gas stream The separation characteristics of particles entrained in a particle-laden gas for separation by the commonly used methods for removing particles from a gas stream are improved by injecting finely divided urea into the gas stream prior to its passage throu... | 01/24/1978 |
| 4038049 | Electrofluidized beds for collection of particulate Apparatus for the high performance collection of gas entrained particulate, especially submicron particulate, consisting of a fluidized bed of collection sites with an electric field imposed on the bed so that the particulate to be collected, which is cha... | 07/26/1977 |
