ClassID:

127060

D21H23/76 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect

Sub-classes:
Recent Application in this class:
#1
20240328088
2024-10-03

System and method of dynamic corrective enzyme selection and formulation for pulp and paper production

#2
20220186441
2022-06-16

System and method of dynamic corrective enzyme selection and formulation for pulp and paper production

#3
20220016875
2022-01-20

Packaging material

#4
20200386736
2020-12-10

Polymer Probes And Methods

#5
20200022538
2020-01-23

Absorbent towel paper web products comprising nano-filaments

#6
20200022537
2020-01-23

Soft sanitary tissue paper web products comprising nano-filaments

#7
20180078099
2018-03-22

Process for making tissue or towel products comprising nanofilaments

#8
20170115267
2017-04-27

Polymer probes and methods

#9
20160281299
2016-09-29

Method and apparatus for continuous manufacture of surface sizing starch, wet-end starch or binder starch in paper, cardboard and chemical pulp industry

#10
20160160445
2016-06-09

Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

#11
20140318727
2014-10-30

Process for the production of paper

#12
20140178660
2014-06-26

Soft tissue having reduced hydrogen bonding

#13
20140102655
2014-04-17

Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

#14
20120055642
2012-03-08

IMPROVING THE STRENGTH OF PAPER AND BOARD PRODUCTS

#15
20110247773
2011-10-13

Process for the production of paper

#16
20110030908
2011-02-10

Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality

#17
20070131369
2007-06-14

Papermaking process

#18
20060225856
2006-10-12

Papermaking using modified sheet silicates as microparticles

#19
20060130991
2006-06-22

Process for the production of paper

#20
20060000570
2006-01-05

Amphoteric cationic polymers for controlling deposition of pitch and stickies in papermaking

#21
20050279469
2005-12-22

Retention aid additives for paper making

#22
20050155731
2005-07-21

Process for making abrasion resistant paper and paper and paper products made by the process