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Class Information
Number: 55/482
Name: Gas separation > Two or more separators (e.g., spaced filters in flow line or casing)
Description: Apparatus comprising two or more operatively distinct filtering media in spaced or edge-to-edge relation, or comprised of two or more plies, at least two of said plies being functionally distinct.










Sub-classes under this class:

Class Number Class Name Patents
55/486 Plies or layers of different characteristics or orientation 738
55/484 Spaced for parallel flow of gas 585
55/485 Three or more serially spaced 286
55/483 With framework for edge to edge relation 191
55/482.1 With heating or cooling means 26


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8685127 Compact filter, method for producing a compact filter, and filter medium Apr. 1, 2014
8673041 Filter holding frame with adjustable clamping mechanism and slot for pre-filter Mar. 18, 2014
8668754 Engine air intake device and construction machine incorporated with the same Mar. 11, 2014
8663353 Selective gas filter Mar. 4, 2014
8641792 Air intake system Feb. 4, 2014
8640884 Fluid treatment elements and fluid treatment arrangements with spaces between fluid treatment elements and methods for making and using them Feb. 4, 2014
8613895 Process equipment contaminant removal Dec. 24, 2013
8603229 Multi-element structured arrays (MESA's) for cost effective and high efficiency treatment of fluids Dec. 10, 2013
8597391 Filtration system and method Dec. 3, 2013
8597403 Inline water trap Dec. 3, 2013
8590158 Methods of making filter apparatus and fabricating a porous ceramic article Nov. 26, 2013
8591617 Powder coating apparatus and method Nov. 26, 2013
8591622 Filter apparatus with porous ceramic plates Nov. 26, 2013
8580003 Exhaust gas purifying device Nov. 12, 2013
8580014 Method utilizing international organization for standardization container filter house Nov. 12, 2013
RE44536 Filters employing both acidic polymers and physical-adsorption media Oct. 15, 2013
8523970 Portable air filter Sep. 3, 2013
8512430 Explosion-proof enclosures with active thermal management using sintered elements Aug. 20, 2013
8512452 Hot-trap assembly for trapping unreacted gas by-products Aug. 20, 2013
8506664 Filter pipeline Aug. 13, 2013
8500838 Method and associated kit utilizing international organization for standardization container filter house Aug. 6, 2013
8475556 Filter cartridge system Jul. 2, 2013
8460420 Filter element Jun. 11, 2013
8449637 Oil mist separator of an internal combustion engine May. 28, 2013
8430941 Filter element arrangement and portable air cleaner incorporating same Apr. 30, 2013
8414682 Inline water trap Apr. 9, 2013
8409337 Air handling filtration equipment with adjustable media bed and method of use Apr. 2, 2013
8409335 Separating apparatus Apr. 2, 2013
8404015 Filter arrangement Mar. 26, 2013
8398755 Integrated membrane module for gas dehydration and gas separation Mar. 19, 2013
8394160 Filter device, especially air filter for an internal combustion engine Mar. 12, 2013
8388717 Furnace filter adapters and braces Mar. 5, 2013
8388715 Modular apparatus for processing air, particularly for classified environments and food article making processes in general Mar. 5, 2013
8382887 System for decontaminating industrial output gases Feb. 26, 2013
8377183 High cleaning efficiency room air cleaner with slim profile Feb. 19, 2013
8372349 Air freshener Feb. 12, 2013
8366797 Fine fiber media layer Feb. 5, 2013
8343247 Filter module Jan. 1, 2013
8337597 Moisture diversion apparatus for air inlet system and method Dec. 25, 2012
8328905 Air cleaner assembly and method Dec. 11, 2012
8287612 Filter element and filter system Oct. 16, 2012
8273158 Mist eliminator, moisture removal system, and method of removing water particles from inlet air Sep. 25, 2012
8273145 Cam-type locking device for retaining static filter panels in a filter holding frame Sep. 25, 2012
8273144 Air treatment device and housing for an air treatment device Sep. 25, 2012
8273143 Air cleaner, replaceable filter cartridges, and methods Sep. 25, 2012
8257457 Separating apparatus Sep. 4, 2012
8252080 Liquid absorbing filter assembly and system using same Aug. 28, 2012
8252083 Filter-holding object Aug. 28, 2012
8252099 Air filtration device Aug. 28, 2012
8252100 Air filtration device Aug. 28, 2012

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