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Browse by Category: Main > Chemistry
Class Information
Number: 55/521
Name: Gas separation > Zigzag, corrugated, or conical
Description: Apparatus of cohesive filter material maintained in a configuration imposed upon it either by bonding upon itself or impregnants, or by inherent characteristic, the configuration taking a zigzag, corrugated or conical form.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Patent Number Title Of Patent Date Issued
8709249 (4943 Apr. 29, 2014
8702830 Diesel exhaust filtering apparatus Apr. 22, 2014
8702831 Air cleaner; replaceable filter cartridges; and, methods Apr. 22, 2014
8685130 Air filter arrangement; air cleaner assembly; and methods Apr. 1, 2014
8685301 Fluted filter with axial seal Apr. 1, 2014
8679217 Pleated nanoweb structures Mar. 25, 2014
8673040 Filter construction for use with air in-take for gas turbine and methods Mar. 18, 2014
8668755 Membrane-free filter and/or integral framing for filter Mar. 11, 2014
8663355 Air filter arrangement; assembly; and, methods Mar. 4, 2014
8657900 Filter device and main filter element for a filter device Feb. 25, 2014
8652228 Filter elements; air cleaner; assembly; and, methods Feb. 18, 2014
8641795 Filter arrangements; housing; assemblies; and, methods Feb. 4, 2014
8641901 Filter structure Feb. 4, 2014
8636820 Air filter arrangement Jan. 28, 2014
8623109 Collapsible extended surface filter and air cleaner system using collapsible extended surface filter Jan. 7, 2014
8608817 Meltblown filter medium Dec. 17, 2013
8608818 Filter element having sealing members and methods Dec. 17, 2013
8603218 Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges Dec. 10, 2013
8603210 Air filter element Dec. 10, 2013
8597393 Pleated air filter pack and air filter using same Dec. 3, 2013
8585794 Air filter insert Nov. 19, 2013
8574333 Method of forming filter arrangements; and, apparatus Nov. 5, 2013
8562726 Chamber air cleaner and an intake apparatus for engine including the same Oct. 22, 2013
8562708 Three-dimensional filter Oct. 22, 2013
8562707 Air filter having fluted filter media Oct. 22, 2013
8551207 Fluted filter with axial seal Oct. 8, 2013
8551272 Method for producing a ceramic filter body Oct. 8, 2013
8545585 Filter element for pulse cleaning and methods Oct. 1, 2013
8545589 Filtration media pack, filter element, and methods Oct. 1, 2013
8545590 Flutable fiber webs with high dust holding capacity Oct. 1, 2013
8540791 Canister air filter and method for fabricating the same Sep. 24, 2013
8540790 Filter element Sep. 24, 2013
8535404 Membrane-free filter and/or integral framing for filter Sep. 17, 2013
8523971 Multilayer nanofiber filter Sep. 3, 2013
8518140 Filter element frames Aug. 27, 2013
8518142 Filter arrangement and methods Aug. 27, 2013
8512499 Fluted filter medium and process for its manufacture Aug. 20, 2013
8506667 Filters and methods for imparting structural support to pleated filter media Aug. 13, 2013
8506668 Fluted filter with axial seal Aug. 13, 2013
8506669 Pleated filter with monolayer monocomponent meltspun media Aug. 13, 2013
8500839 Panel filter Aug. 6, 2013
8496723 Air filter arrangement Jul. 30, 2013
8496774 Process and materials for coiling z-filter media; and/or closing flutes of filter media; and, products Jul. 30, 2013
8491689 Joined filter media pleat packs Jul. 23, 2013
8491691 Filter cartridge with seal member and methods Jul. 23, 2013
8486178 Cross-pleated membrane cartridges, and method and apparatus for making cross-pleated membrane cartridges Jul. 16, 2013
8479924 Filter for filtering fluids and method for producing the same Jul. 9, 2013
8480779 Air filter arrangement; assembly; and, methods Jul. 9, 2013
8465565 Polyethylene membrane and method of its production Jun. 18, 2013
8460425 Air cleaner; replaceable filter cartridges; and, methods Jun. 11, 2013

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