ClassID:

126399

D21C9/1026 - CPC Classification

Classification description:

After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere; Bleaching ; Apparatus therefor Other features in bleaching processes

Sub-classes:
Recent Application in this class:
#1
20260028772
2026-01-29

RINSING DEVICE FOR REFINED COTTON

#2
20240365842
2024-11-07

CIGARETTE WRAPPER USING NANOCELLULOSE FILM

#3
20240247439
2024-07-25

SCALE INHIBITION FOR PULP DIGESTERS

#4
20230366150
2023-11-16

TREATED KRAFT PULP COMPOSITIONS AND METHODS OF MAKING THE SAME

#5
20190112759
2019-04-18

SELECTIVE REMOVAL OF K+ AND CL- FROM RECOVERY BOILER ELECTROSTATIC PRECIPITATOR ASHES IN A KRAFT PROCESS

#6
20160040362
2016-02-11

Method of making a highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process

#7
20160002849
2016-01-07

Softwood kraft fiber having an improved α-cellulose content and its use in the production of chemical cellulose products

#8
20140202646
2014-07-24

Bleach Stabilizer Compositions And Methods

#9
20110294166
2011-12-01

Thermostable enzymes for the hydrolysis of mannan-containing polysaccharides

#10
20100252213
2010-10-07

PULP AND PAPER HAVING INCREASED BRIGHTNESS

#11
20080149568
2008-06-26

Method for removing lignin from water

#12
20070193707
2007-08-23

Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness

#13
20060219375
2006-10-05

Method for removing potassium from ash produced in a kraft pulping process recovery boiler using a Na-type cation exchange organic resin

#14
20060169429
2006-08-03

System and method for oxygen delignification of pulp made for lignocellulosic material

#15
20060090865
2006-05-04

Method of bleaching cellulose pulp and bleaching line therefore

#16
20060090864
2006-05-04

Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate

#17
20050028953
2005-02-10

Methods for making carboxylated pulp fibers