ClassID:

126822

D21H11/06 - CPC Classification

Classification description:

Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only; Chemical or chemomechanical or chemothermomechanical pulp Sulfite or bisulfite pulp

Recent Application in this class:
#1
20260015794
2026-01-15

TRANSLUCENT PAPER PRODUCTS

#2
20250314012
2025-10-09

USE OF CELLULASE TO IMPROVE VISCOSITY CONTROL OF KRAFT DISSOLVING PULP

#3
20250257527
2025-08-14

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#4
20250059707
2025-02-20

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#5
20240318382
2024-09-26

Sulfonated Lignin-Derived Compounds And Uses Thereof

#6
20240263401
2024-08-08

MULTI-PLY LINER FOR USE IN CORRUGATED BOARD

#7
20240240408
2024-07-18

MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD

#8
20240240407
2024-07-18

Corrugated Board for Humid Conditions

#9
20240240406
2024-07-18

MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD

#10
20240240403
2024-07-18

FLUTING OR LINER COMPRISING NSSC PULP

#11
20230304221
2023-09-28

Sulfonated Lignin-Derived Compounds And Uses Thereof

#12
20230192975
2023-06-22

Wavelength-controllable cellulose iridescent film and method for preparation thereof

#13
20230160143
2023-05-25

Sulfonated lignin-derived compounds and uses thereof

#14
20230056642
2023-02-23

Paper production

#15
20220243399
2022-08-04

Common preparation of lignocellulosic feedstock and a product containing cellulose but free from lignin

#16
20220034038
2022-02-03

Sulfite-based processes for producing nanocellulose, and compositions and products produced therefrom

#17
20210340706
2021-11-04

Nanocellulose production co-located at a pulp and paper mill

#18
20210276945
2021-09-09

Sulfonated lignin-derived compounds and uses thereof

#19
20210140117
2021-05-13

Dissolved air de-bonding of a tissue sheet

#20
20200318287
2020-10-08

METHOD OF PROVIDING A PAPER FIBRE COMPOSITION

#21
20200080265
2020-03-12

Dissolved air de-bonding of a tissue sheet

#22
20200063339
2020-02-27

Composition of matter effluent from refiner of a wet laid process

#23
20190271114
2019-09-05

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#24
20190152902
2019-05-23

Sulfonated aromatic compounds

#25
20190085006
2019-03-21

Method for producing low molecular weight aromatic lignin-derived compounds

#26
20180251941
2018-09-06

NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL

#27
20180142084
2018-05-24

Method for producing nanocelluloses from a cellulose substrate

#28
20180134877
2018-05-17

Cellulose platelet compositions, methods of preparing cellulose platelet compositions and products comprising same

#29
20180127919
2018-05-10

Process for producing increased bulk pulp fibers, pulp fibers obtained, and products incorporating same

#30
20170335521
2017-11-23

Dissolved air de-bonding of a tissue sheet

#31
20160281298
2016-09-29

SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM

#32
20150354141
2015-12-10

Methods of pretreating lignocellulosic biomass with reduced formation of fermentation inhibitors

#33
20150184345
2015-07-02

Sulfite-based processes for producing nanocellulose, and compositions and products produced therefrom

#34
20150059617
2015-03-05

Cellulose platelet compositions, methods of preparing cellulose platelet compositions and products comprising same

#35
20110056640
2011-03-10

Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems

#36
20100032111
2010-02-11

Process for producing fibrous material from wood

#37
20090314443
2009-12-24

METHOD FOR PRODUCING FIBROUS MATERIAL

#38
20090266500
2009-10-29

PROCESS FOR PRODUCING TISSUE PAPER

#39
20090229774
2009-09-17

Lignocellulosic fibrous material made of wood

#40
20060142535
2006-06-29

Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems