| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210777000 | Including precoating filter medium with filter aid | 10 |
| 20100096342 | Removal of Contaminants from Water and Gas by Filtration - The invention relates to compositions and methods for separating oil and other contaminants (particularly oleophilic compounds) from water, gas and other carriers. The invention is useful for separating oil, including emulsified oil, from water and other oleophilic compounds from bilgewater and other wastewater. The compositions comprise a hydrocarbon resin and a drying oil, which may be combined in an organic solvent. For example, hydrocarbon resin and tung oil are optionally combined into a naphtha solvent. The invention is also useful for removing a variety of contaminants from an air stream, such as exhaust from internal combustion engines, burners, and other sources. | 04-22-2010 |
| 20100300987 | FILTRATION APPARATUS AND FILTRATION METHOD - The present invention has an object to provide a filtration apparatus and a filtration method which can treat a large quantity of flow in a short time and can sterilize raw water to a high level using only a physical treatment. The filtration apparatus and the filtration method according to the present invention includes a spring filter | 12-02-2010 |
| 20100300988 | PRIMING METHOD FOR FILTER - A priming method for a filter, whereby the outlet of a spent filter is connected to the inlet of a fresh filter, and the spent filter is inverted. A drain in the spent filter is then opened to allow air to enter the spent filter and fluid to drain from the clean side of the spent filter into the fresh filter. | 12-02-2010 |
| 20120145651 | Microfiltration devices - A method of treating a hollow fiber membrane microfiltration filter having an influent side and an effluent side to improve performance of the filter is disclosed. The method entails sealing imperfections in surfaces of the filter by flushing the filter with a liquid aqueous suspension of particulates. Filter cartridge devices also are disclosed. The devices may include a bactericidal chamber. A radial flow filter may be included in the devices. The filter cartridges may include a drain tube positioned within the filter for removing of effluent generated by the filter. A plurality of filter cartridges may be-positioned-on the drain tube. | 06-14-2012 |
| 20120305499 | METHOD FOR REMOVING CONTAMINANTS FROM A FLUID STREAM - A method for removing at least one contaminant from a fluid stream includes filtering the fluid stream with a filtration medium. The filtration medium includes an impregnate. The impregnate includes an organic amine and an inorganic metal salt. The inorganic metal salt includes magnesium oxide, calcium oxide or combinations thereof. The medium has from about 0.1 to about 25% by weight of impregnate. The impregnate contains from about 0.1 to about 5% by weight organic amine, and the organic amine includes aqueous urea, solid urea, melamine or mixtures thereof. The impregnate contains from about 0.1 to about 5% by weight metal salt. The impregnate optionally further includes a surfactant such as polyacrylic acid. In some embodiments, the method includes removing at least two contaminants from the fluid stream. | 12-06-2012 |
| 20130105411 | Filter Module for Disposable Use, and a Method for Producing a Filter Module of This Type and the Use Thereof | 05-02-2013 |
| 20140231364 | METHOD FOR PREPARING A PRECOAT ON THE SURFACE OF THE FILTER MEDIUM OF A POLISHING FILTER, POLISHING FILTER AND USE OF A POLISHING FILTER - Method for preparing a precoat ( | 08-21-2014 |
| 20140374363 | METHOD AND APPARATUS FOR REDUCING THE THICKNESS OF A PRECOAT LAYER OF A DISC FILTER - Method and apparatus for reducing the thickness of a precoat-layer accumulated on the filtering surface of a filter disc from a solids-containing suspension in a basin of a disc filter, said disc filter having two or more filter discs arranged on a shaft and between them at least one drop chute provided with a scraper on both sides, which scraper scrapes the cake filtered from the suspension on the filtering surfaces of the filter discs into the drop, the layer thickness of the precoat on the filtering surface is reduced by shortening the distance between the tips of the scrapers and the filtering surface, and the precoat thickness reduction is accomplished for the precoats on the filtering surface of the two filter discs on both sides of the drop chute non-simultaneously. | 12-25-2014 |
| 210778000 | With or by addition to prefilt | 2 |
| 20110127224 | FILTER MEDIA FOR USE IN POOL FILTERS - A sand filter for use with swimming pools includes a tank that has a hollow interior space and a top diffuser for allowing spent pool water to enter the tank and for distributing the pool water inside the tank. The sand filter also includes filter media formed as a bed of material on a bottom of the tank and also includes laterals that are located under the filter media and allow filtered pool water to exit the tank and flow back to the pool. The filter media includes a bed of sand that is disposed on the bottom of the tank and a layer of perlite material that is disposed on a top surface of the bed of sand. The perlite material is a high flow rate, low density perlite material that only contains a trace amount of floaters. | 06-02-2011 |
| 20120187053 | METHOD AND DEVICE FOR PREPARING A PROCESSING LIQUID ACCUMULATED IN THE COURSE OF A CONTAINER CLEAINING - The invention relates to the use of labels ( | 07-26-2012 |
