D21D5/00 - CPC Classification Index

ClassID:

126482 ⎘

D21D5/00 - CPC Classification

Classification description:

Purification of the pulp suspension by mechanical means; Apparatus therefor

Sub-classes:

D21D5/005 » {Forming fibrous aggregates} 3
D21D5/02 » Straining or screening the pulp 40
D21D5/18 » with the aid of centrifugal force 14
D21D5/26 » De-aeration of paper stock 22
D21D5/28 » Tanks for storing or agitating pulp 19

Recent Application in this class:

20240026606

2024-01-25

METHOD FOR SEPARATING CELLULOSIC PARTICULATES OUT OF FIBER SUSPENSIONS AND/OR FILTRATES

20210062429

2021-03-04

Aramid nanofiber-based insulation paper and preparation method thereof

20150240417

2015-08-27

Sheet manufacturing apparatus

20150013925

2015-01-15

METHOD AND SYSTEM FOR HIGH ALPHA DISSOLVING PULP PRODUCTION

20140290890

2014-10-02

Sheet manufacturing apparatus

20120227918

2012-09-13

Refiner steam separation system for reduction of dryer emissions

20110272110

2011-11-10

Method and system for high alpha dissolving pulp production

20110272109

2011-11-10

Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse

20110162814

2011-07-07

Refiner steam separation system for reduction of dryer emissions

#10

20100224337

2010-09-09

Refiner steam separation system for reduction of dryer emissions

#11

20090272504

2009-11-05

Method and apparatus for the integrated cleaning of a paper-pulp processing plant

#12

20080202713

2008-08-28

Refiner steam separation system for reduction of dryer emissions

#13

20080121358

2008-05-29

Method And System For Treating A Fibrous Suspension

#14

20070023329

2007-02-01

Method for selective removal of ray cells from cellulose pulp

#15

20060124256

2006-06-15

Method of removing high density stickies from secondary papermaking fibers

#16

20050029373

2005-02-10

Refiner steam separation system for reduction of dryer emissions