B01D2275/305 - CPC Classification Index

ClassID:

30697 ⎘

B01D2275/305 - CPC Classification

Classification description:

Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours; Porosity of filtering material Porosity decreasing in flow direction

Recent Application in this class:

20230372858

2023-11-23

AIR FILTER MEDIUM, FILTER PLEAT PACK, AND AIR FILTER UNIT

20220395771

2022-12-15

FILTER HOLDING DEVICE, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

20210113951

2021-04-22

FILTER ASSEMBLY

20210101100

2021-04-08

FILTER MEDIA HAVING AN OPTIMIZED GRADIENT

20190140521

2019-05-09

Slip ring system and electrical machine having a slip ring system of this kind

20170128876

2017-05-11

Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filter

20150013285

2015-01-15

Filter material

20120216814

2012-08-30

Two-stage air filter and mask incorporating the same

20120216495

2012-08-30

Removable external filter for servo air actuated valves

#10

20120174773

2012-07-12

Gas purification apparatus and method

#11

20120017552

2012-01-26

Removable external filter for servo air actuated valves

#12

20100196218

2010-08-05

Filter medium

#13

20100193427

2010-08-05

Filtration element having a variable density sidewall

#14

20090301042

2009-12-10

GRADIENT DENSITY ENGINE INTAKE FILTER MEDIA

#15

20090293730

2009-12-03

Two-stage air filter and mask incorporating the same

#16

20090249957

2009-10-08

Two Stage Air Filter

#17

20090025552

2009-01-29

Gas purification apparatus and method

#18

20080245717

2008-10-09

Separator for Cleaning Fluid Streams

#19

20070251200

2007-11-01

Two-stage air filter

#20

20070227968

2007-10-04

FILTRATION ELEMENT HAVING A VARIABLE DENSITY SIDEWALL

#21

20060277881

2006-12-14

Diesel soot particulate filter medium

#22

20060231486

2006-10-19

Filtration element having a variable density sidewall

#23

20060230727

2006-10-19

Filtration element having a variable density sidewall

#24

20060156700

2006-07-20

Filter elements for filters

#25

20060008396

2006-01-12

Exhaust gas post treatment arrangement

#26

20050066640

2005-03-31

Diesel soot filter

#27

20050000201

2005-01-06

Apparatus for and method of trapping products in exhaust gas

#28

15490803

2018-05-15

Method of manufacturing fiberglass filtration media

#29

15255136

2019-07-16

Method of manufacturing fiberglass filtration media