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8182580 |
Filter structure for filtering a particle-containing gas, method of its manufacture and use of porous paper
The invention relates to a novel gas filter structure, a filtering method and a method of producing the filter structure. The structure according to the invention includes a planar, porous...
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8157902 |
Non-thermal plasma particulate removal systems and methods thereof
The present invention is broadly directed to non-thermal plasma-based systems for reducing the amount of particulate matter in a gas stream, as well as to methods for using such systems. The...
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8123840 |
Electrostatic particle filter
The invention relates to an electrostatic particle filter for removing particles from air. The electrostatic particle filter includes a filter medium (3) with first and second opposite sides, a...
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8092577 |
Method and apparatus for removing gaseous or vaporous sterilants from a medium
The present invention provides a method and apparatus for removing chemical sterilant molecules from a medium, such as a carrier gas. In one embodiment, the apparatus includes a housing that...
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8080086 |
Static dissipative filtration media
A filtration media that incorporates a static dissipative media layer for dissipating the static charge that builds up as a fluid, such a fuel, passes through the filtration media. The filtration...
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7964012 |
Filter media with improved conductivity
Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter...
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7927400 |
Static dissipative filtration media
A filtration media that incorporates a static dissipative media layer for dissipating the static charge that builds up as a fluid, such a fuel, passes through the filtration media. The filtration...
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7708803 |
Method and apparatus for the enhanced removal of aerosols from a gas stream
The invention provides methods and apparatuses for removing additional aerosols and in some cases additional particulate matter from a gas stream, wherein a certain portion of such aerosols and...
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7658785 |
System with canopy and electrode for air cleaning
System for separating particles from an environment, the system including a perforated screen and an ionisation electrode in the environment for creating an electrostatic potential between the...
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7594959 |
Conducting gas purification filter and filter assembly
The present invention relates to a conducting filter (110) adapted for gas purification and a filter assembly (150, 200, 300, 400, 500, 600) comprising such filter. The conducting filter is made...
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7553440 |
Method and apparatus for electric treatment of substrates
Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants...
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7452411 |
Electrostatic ionic air emission device
The invention concerns an electrostatic ionic emission device for depositing on the surface of a plurality of particles aerosols within a fluid, a quasi-homogeneous amount of ions. The device...
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7393385 |
Apparatus and method for electrostatically depositing aerosol particles
An apparatus useful for electrostatic deposition (ESD) of aerosol particles and methods of depositing the aerosol particles onto a substrate are disclosed. The ESD apparatus and the method of the...
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7294169 |
Electrical enhancement of fabric filter performance
A method for operating a filter assembly having a filter medium includes applying a constant or nearly constant static DC potential to dust entering the filter assembly and the filter medium,...
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7244292 |
Electret article having heteroatoms and low fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has...
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7244291 |
Electret article having high fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has a CF3:CF2 ratio of at least 0.15 and that has a fluorosaturation ratio greater than about...
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7160365 |
Ion generating apparatus, air conditioning apparatus, and charging apparatus
An ion generating apparatus is built by sandwiching a dielectric layer between an induction electrode and a discharge electrode. The induction electrode is formed of a metal substrate of, for...
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7041153 |
Method of measuring floating dusts
In a method of measuring particles floating in an atmosphere, the atmosphere containing the particles is sucked into a container, ions are generated from a discharge electrode disposed in the...
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7004995 |
Triboelectric charging of wovens and knitted fabrics
A method for the utilization of a woven or loop-formingly knitted fabric which acquires an electrostatic charge as a result of a specific treatment for filtering airborne, dusty allergens such as...
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6955708 |
Air-treatment apparatus and methods
Air-treatment apparatus and methods are disclosed that are especially suitable for treating the air in a room or other dwelling or working space. An apparatus embodiment of the subject apparatus...
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6953544 |
Method of making a respirator that has a fluorinated electret
A method of making a respirator, which method includes placing an electret in a respirator body that is adapted to fit over the nose and mouth of a wearer. The electret is disposed in the...
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6923848 |
Collecting apparatus of floating dusts in atmosphere
A collecting device for collecting particles floating in the atmosphere includes a collecting container; a pump for sucking the atmosphere into the collecting container; a discharge electrode...
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6808551 |
Method of using fluorinated electrets
An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.
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6805732 |
Electrostatic treatment of aerosols, devices and method for producing same
The invention concerns a volume generator (1) of chaotic electrostatic field (E), locally amplified, to subject a fluid (U) loaded with aerosol parties (P, p) to the action of an electrostatic...
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6793717 |
Apparatus for keeping contamination away from a mask during exposure with light
The present invention includes a filtered mask enclosure having an exterior portion and interior regions within the exterior portion such that the interior regions have a filtering region and a...
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6780226 |
Charge stabilized electret filter media
An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration...
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6773488 |
Electrostatic filter and a method thereof
A filter system with a housing defining a passage between an inlet and an outlet and one or more structures located in the passage in the housing. Each of the structures comprises two or more...
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6660210 |
Method of making fluorinated electrets
An electret is described that includes a plasma surface modified polymeric article having plasma surface fluorination produced by fluorinating the polymeric article.
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6632267 |
Method and device for separating materials in the form of particles and/or drops from a gas flow
The invention relates to a method and device for separating materials in the form of particles and/or drops from a gas flow, in which method the gas flow is directed through a collection chamber...
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6620224 |
Air purification device with a needle-shaped electrode having a protective cover thereon
In accordance with the present invention, there is provided an air purification device including: a first electrode in the shape of a hollow cylinder having both ends open; a second electrode in...
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6599349 |
Precipitating tube bundle for wet electrofilters
A precipitation tube bundle for wet electrostatic filters is provided. The precipitation tube bundle consists of a plurality of single-piece precipitation tubes which are held at a distance from...
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6527834 |
Filter for gaseous media
A filter made of nonwoven fabric, paper or the like for gaseous media, having an electrically conductive coating made of a conductive substance of pulverizable materials, in particular from...
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6514324 |
High efficiency active electrostatic air filter and method of manufacture
A washable air filter for removing particles from the inlet air to a heating and/or air conditioning system formed of an assembly of a central polymeric pad containing actively charged charge...
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6506232 |
Air ionization apparatus and method for efficient generation and cleaning
Ionizing apparatus includes a housing that supports a plurality of ionizing electrodes disposed within fluid apertures that are connected via tubing conduits to pass fluid therethrough about the...
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6497754 |
Self ionizing pleated air filter system
A pleated filter is provided with electrically conductive fibrous material that releases ions to improve trapping efficiency. The edges of folded filter media are rendered emitting as by attaching...
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6419871 |
Plasma treatment of filter media
The present invention is drawn to an improved electrostatic filter medium comprising a web of electret fibers which have been treated with fluorine-containing plasmas at a deposition amount of...
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6398847 |
Method of removing contaminants from an aerosol using a new electret article
An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.
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6391259 |
Ozone applications for disinfection, purification and deodorization
A frame-type ozone generator (242) has a plurality of elongated electrodes (201, 202) deployed in substantially parallel, spaced relation to each other so as to form a substantially flat electrode...
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6375721 |
Ionization filter for purifying air
The invention relates to an ionization filter for purifying air that is enriched with dust particles and other inorganic and organic pollutants. The filter has at least one electrically charged...
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6348103 |
Method for cleaning electrofilters and electrofilters with a cleaning device
A method for cleaning a two-stage emission electrode of an electrofilter suitable for use with an internal combustion engine, whereby a cleaning body moves along the emission electrode to strip it...
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6261342 |
Method of removing particulate solid or liquid aerosol from a gas
A method of removing particulate solid or liquid aerosol from a gas, which method comprises the step of: passing a particulate solid or liquid aerosol containing gas through an electret filter that...
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6245126 |
Method for enhancing collection efficiency and providing surface sterilization of an air filter
A method of filtering air includes the steps of providing a filter element, providing a pair of electrodes sandwiching the filter element, applying a DC electrostatic field to the electrodes to...
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6224677 |
Gas recovery unit utilizing dual use of gas
A CVD device A is provided which is equipped with a gas introduction part A3 having an inert gas supply part G1 for supplying a diluting inert gas and a cleaning gas supply path G2 for supplying a...
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6117403 |
Barrier discharge conversion of Hg, SO2 and NOx
A process and apparatus for reducing particulate, nitrogen oxides ("NOx"), sulfur dioxide ("SO2 "), and mercury ("Hg") emissions from the combustion exhaust of fossil fuel fired plants while...
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5964926 |
Gas born particulate filter and method of making
Disclosed is an improved filter formed from a non-dielectric material which has been coated with a dielectric material and electret treated by, for example, DC corona discharge treatment. Also...
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5888274 |
Triboelectric property modification and selection of fabrics for filtration applications
A method is provided for specifying and altering the electrical properties of fibers and fabrics. This allows the prescription of filter media prepared from these constituents for consistently...
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5888276 |
Reduction of electrostatic charge in waste bottle
An apparatus for reducing electrostatic charge of particles in a waste container. In one embodiment the waste container is coated with a liquid having a viscosity sufficient to prevent...
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5843210 |
Method and apparatus for removing particulates from a gas stream
Electrostatic spray apparatus including an electrode for generating a high-voltage corona, one or more sprayers for generating a spray of liquid droplets and for directing the droplets into the...
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5601791 |
Electrostatic precipitator for collection of multiple pollutants
A novel electrostatic precipitator includes an electrostatic collector section with discharge electrodes positioned between pairs of grounded collector electrodes, a gas entry port located upstream...
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5424044 |
Integrated SCR electrostatic precipitator
An integrated SCR ESP employs catalytic collector plates for NOx and particulate removal. Ammonia injected either directly in the ESP or upstream therefrom catalytically reduces NOx to nitrogen and...
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