D21H17/05 - CPC Classification Index

ClassID:

126870 ⎘

D21H17/05 - CPC Classification

Classification description:

Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution; Non-macromolecular organic compounds containing elements other than carbon and hydrogen only

Sub-classes:

D21H17/06 » Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals 130
D21H17/07 » Nitrogen-containing compounds 154
D21H17/09 » Sulfur-containing compounds 66
D21H17/10 » Phosphorus-containing compounds 43
D21H17/11 » Halides 76
D21H17/12 » Organo-metallic compounds 16
D21H17/13 » Silicon-containing compounds 52
D21H17/14 » Carboxylic acids; Derivatives thereof 133
D21H17/17 » Ketenes, e.g. ketene dimers 109
D21H17/18 » forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with itself, or other added substances, e.g. by grafting on the fibres 17

Recent Application in this class:

20260103843

2026-04-16

A METHOD FOR REDUCING THE LOAD OF MICROBIAL CONTAMINANTS IN A PULP STOCK COMPRISING A RECYCLED FIBER FRACTION

20200239652

2020-07-30

Method for producing a film having good barrier properties and a film having good barrier properties

20180142084

2018-05-24

Method for producing nanocelluloses from a cellulose substrate

20160208438

2016-07-21

Flame-resistant paper for wave absorber member and wave absorber member

20090139676

2009-06-04

ASA emulsification with ultrasound