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Class Information
Number: 55/486
Name: Gas separation > Two or more separators (e.g., spaced filters in flow line or casing) > Plies or layers of different characteristics or orientation
Description: Apparatus in which the media comprises facially contiguous elements or members of unlike material, mesh, screen and the like characteristics to define thereby functionally distinct members, or comprises like material differently oriented.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7618480 |
Filter assembly and method |
Nov. 17, 2009 |
| 7601192 |
Recirculation filter |
Oct. 13, 2009 |
| 7597733 |
Liquid absorbing filter assembly and system |
Oct. 6, 2009 |
| 7597745 |
Filter materials for adsorbing hydrocarbons |
Oct. 6, 2009 |
| 7594946 |
Air-cleaner filter material for internal combustion engine and air-cleaner element |
Sep. 29, 2009 |
| 7592178 |
Filter integrity tester |
Sep. 22, 2009 |
| 7591883 |
Microfiber supported nanofiber membrane |
Sep. 22, 2009 |
| 7588619 |
Cross-flow filter media and filter assembly |
Sep. 15, 2009 |
| 7572307 |
Filter assembly for vacuum cleaner and vacuum cleaner incorporating such assembly |
Aug. 11, 2009 |
| 7559966 |
Exhaust gas filter |
Jul. 14, 2009 |
| 7556663 |
Dual pleated air filter |
Jul. 7, 2009 |
| 7544225 |
Device for filtering a gas flowing through a line |
Jun. 9, 2009 |
| 7534287 |
Porous sintered composite materials |
May. 19, 2009 |
| 7527663 |
Ventilation system providing NBC protection |
May. 5, 2009 |
| 7520923 |
Antimicrobial filtration article |
Apr. 21, 2009 |
| 7520913 |
Non-cylindrical filter elements, and methods |
Apr. 21, 2009 |
| 7520280 |
Rebreather apparatus |
Apr. 21, 2009 |
| 7517377 |
Dust collecting unit for use in cleaner |
Apr. 14, 2009 |
| 7517944 |
Process for producing polycarbonate |
Apr. 14, 2009 |
| 7513923 |
Variable impedance air filter for electronic systems |
Apr. 7, 2009 |
| 7501013 |
Fuel adsorption sheet, manufacturing method thereof, and air cleaner |
Mar. 10, 2009 |
| 7501003 |
Composite filter media |
Mar. 10, 2009 |
| 7494587 |
Device having multi-pores magneto-rubber filter |
Feb. 24, 2009 |
| 7488364 |
Layered disposable air filter with dust capture topology |
Feb. 10, 2009 |
| 7485165 |
Air filtering device for protection suits |
Feb. 3, 2009 |
| 7485169 |
Semiconductor manufacturing facility utilizing exhaust recirculation |
Feb. 3, 2009 |
| 7468099 |
Image forming apparatus |
Dec. 23, 2008 |
| 7462213 |
Method of minimizing cross contamination between clean air rooms in a common enclosure |
Dec. 9, 2008 |
| 7455706 |
Filter system for electronic equipment enclosure |
Nov. 25, 2008 |
| 7452412 |
High-efficiency filter device and method for making same |
Nov. 18, 2008 |
| 7427307 |
Electric vacuum cleaner |
Sep. 23, 2008 |
| 7416576 |
Fiber bed assembly and fiber bed therefor |
Aug. 26, 2008 |
| 7416574 |
Filter apparatus, exposure apparatus, and device-producing method |
Aug. 26, 2008 |
| 7413586 |
In-tool and out-of-tool protection of extreme ultraviolet (EUV) reticles |
Aug. 19, 2008 |
| 7413587 |
Disposable filter for a fluid handling device and a method for using the same |
Aug. 19, 2008 |
| 7399333 |
Filter element and process for producing the same |
Jul. 15, 2008 |
| 7396376 |
Seal arrangement for filter element; filter element assembly; and, methods |
Jul. 8, 2008 |
| 7390342 |
Filter element |
Jun. 24, 2008 |
| 7387655 |
Air filtration unit |
Jun. 17, 2008 |
| 7387656 |
Fiber collecting media strip for a mist eliminator |
Jun. 17, 2008 |
| 7357823 |
Disposable filter within a removable chamber |
Apr. 15, 2008 |
| 7354473 |
NBC-building protection system and method |
Apr. 8, 2008 |
| 7344582 |
Filter assembly |
Mar. 18, 2008 |
| 7344581 |
Filter assembly |
Mar. 18, 2008 |
| 7344580 |
Filter unit |
Mar. 18, 2008 |
| 7332004 |
Effluent filtering and containment apparatus |
Feb. 19, 2008 |
| 7332009 |
Separator arrangement for gas/liquid separation; apparatus; and, methods |
Feb. 19, 2008 |
| 7332010 |
High pressure filter/separator and locking mechanism |
Feb. 19, 2008 |
| 7329311 |
Porous sintered composite materials |
Feb. 12, 2008 |
| 7329293 |
Disposable filtration system for bagless vacuum cleaners |
Feb. 12, 2008 |
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