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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7597733 |
Liquid absorbing filter assembly and system |
Oct. 6, 2009 |
| 7597734 |
Multi-element filter arrangement and methods |
Oct. 6, 2009 |
| 7588629 |
Filter cassette |
Sep. 15, 2009 |
| 7588618 |
Filter cassette rack |
Sep. 15, 2009 |
| 7588611 |
Method and apparatus for suppressing sparks |
Sep. 15, 2009 |
| 7582130 |
Coalescing filter assembly |
Sep. 1, 2009 |
| 7578864 |
Ceramic honeycomb filter and its production method |
Aug. 25, 2009 |
| 7575616 |
Low-profile surface mount filter |
Aug. 18, 2009 |
| 7572310 |
Filter system; element configuration; and methods |
Aug. 11, 2009 |
| 7566353 |
Modular air purification system |
Jul. 28, 2009 |
| 7563300 |
Air cleaner |
Jul. 21, 2009 |
| 7563299 |
Filtering apparatus, filter regulator for use with spray gun and spraying system using the same |
Jul. 21, 2009 |
| 7556666 |
Honeycomb structure |
Jul. 7, 2009 |
| 7540898 |
Honeycomb structured body |
Jun. 2, 2009 |
| 7540901 |
Filters employing both acidic polymers and physical-adsorption media |
Jun. 2, 2009 |
| 7537633 |
Filter unit for filtering particles contained in exhaust gas of an internal combusting engine |
May. 26, 2009 |
| 7537629 |
Porous metal denuder |
May. 26, 2009 |
| 7534482 |
Honeycomb structural body |
May. 19, 2009 |
| 7520913 |
Non-cylindrical filter elements, and methods |
Apr. 21, 2009 |
| 7517377 |
Dust collecting unit for use in cleaner |
Apr. 14, 2009 |
| 7513921 |
Exhaust gas filter apparatus capable of regeneration of a particulate filter and method |
Apr. 7, 2009 |
| 7513923 |
Variable impedance air filter for electronic systems |
Apr. 7, 2009 |
| 7507269 |
Bagless stick type vacuum cleaner |
Mar. 24, 2009 |
| 7503955 |
Block for the filtration of particles contained in exhaust gases from an internal combustion engine |
Mar. 17, 2009 |
| 7491254 |
Filter elements; air cleaner; assembly; and, methods |
Feb. 17, 2009 |
| 7488364 |
Layered disposable air filter with dust capture topology |
Feb. 10, 2009 |
| 7473288 |
Particulate matter reducing apparatus |
Jan. 6, 2009 |
| 7465337 |
Internal combustion engine with an air separator and methods for realizing such an internal combustion engine |
Dec. 16, 2008 |
| 7455709 |
Honeycomb structural body |
Nov. 25, 2008 |
| 7452395 |
Air filter for a scoop |
Nov. 18, 2008 |
| 7449110 |
Filter and filter module |
Nov. 11, 2008 |
| 7445656 |
Filtration structure for the exhaust gas from an internal combustion engine |
Nov. 4, 2008 |
| 7427307 |
Electric vacuum cleaner |
Sep. 23, 2008 |
| 7419524 |
Filter system |
Sep. 2, 2008 |
| 7419533 |
Separable air purifying apparatus |
Sep. 2, 2008 |
| 7416573 |
Method and apparatus for suppressing sparks |
Aug. 26, 2008 |
| 7413588 |
High efficiency, low restriction, cost effective filter |
Aug. 19, 2008 |
| 7410520 |
Foldable filter for an air filtration unit and method |
Aug. 12, 2008 |
| 7396376 |
Seal arrangement for filter element; filter element assembly; and, methods |
Jul. 8, 2008 |
| 7387657 |
Honeycomb structural body |
Jun. 17, 2008 |
| 7384441 |
Honeycomb filter |
Jun. 10, 2008 |
| 7371266 |
Apparatus for cleaning a diesel particulate filter with multiple filtration stages |
May. 13, 2008 |
| 7357823 |
Disposable filter within a removable chamber |
Apr. 15, 2008 |
| 7354469 |
Vacuum conveyor device with a multi-stage filter system |
Apr. 8, 2008 |
| 7344579 |
Pipe trap |
Mar. 18, 2008 |
| 7344580 |
Filter unit |
Mar. 18, 2008 |
| 7332014 |
Ceramic structure, method of manufacturing ceramic structure, and device for manufacturing ceramic structure |
Feb. 19, 2008 |
| 7326271 |
Honeycomb filter and method of manufacturing the same |
Feb. 5, 2008 |
| 7323026 |
Safety cabinet for antibiohazard |
Jan. 29, 2008 |
| 7320717 |
Industrial scale honeycomb type dust collector |
Jan. 22, 2008 |
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