ClassID:

126995

D21H21/10 - page 2 - CPC Classification

Classification description:

Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties; Paper forming aids Retention agents or drainage improvers

Recent Application in this class:
#301
20060289136
2006-12-28

Retention and drainage in the manufacture of paper

#302
20060266488
2006-11-30

Hydrophobic polymers and their use in preparing cellulosic fiber compositions

#303
20060260509
2006-11-23

Compositions for enhanced paper brightness and whiteness

#304
20060254464
2006-11-16

Process for the production of paper

#305
20060243407
2006-11-02

Paper and paperboard production process and corresponding novel retention and drainage aids, and papers and paperboards thus obtained

#306
20060225856
2006-10-12

Papermaking using modified sheet silicates as microparticles

#307
20060225855
2006-10-12

Method for the cationisation of legume starches, cationic starches thus obtained applications thereof

#308
20060185806
2006-08-24

Retention and drainage aids

#309
20060162886
2006-07-27

Process for improving dry strength and drainage of paper and paperboard

#310
20060162882
2006-07-27

Water-soluble polymer dispersion, process for producing the same and method of use therefor

#311
20060142544
2006-06-29

Polymeric etheramines, their production and use

#312
20060142465
2006-06-29

Aqueous composition

#313
20060142432
2006-06-29

Retention and drainage in the manufacture of paper

#314
20060142431
2006-06-29

Retention and drainage in the manufacture of paper

#315
20060142429
2006-06-29

Retention and drainage in the manufacture of paper

#316
20060137843
2006-06-29

Retention and drainage in the manufacture of paper

#317
20060137842
2006-06-29

Soft and durable tissue products containing a softening agent

#318
20060130991
2006-06-22

Process for the production of paper

#319
20060124265
2006-06-15

High velocity, low pressure process for making silica gels and microgels

#320
20060116448
2006-06-01

Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides, their preparation and their use

#321
20060099128
2006-05-11

Synthetic magnesium silicate compositions and process for the production thereof

#322
20060096724
2006-05-11

Aqueous compositions and their use in the manufacture of paper and paperboard

#323
20060084772
2006-04-20

Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers

#324
20060084771
2006-04-20

Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers

#325
20060065379
2006-03-30

White top paperboard

#326
20060013754
2006-01-19

Silica gel comprising guanidine carbonate

#327
20060011317
2006-01-19

Method for producing paper and agent for improving yield

#328
20060002879
2006-01-05

Methods of treating keratin based substrates

#329
20060000568
2006-01-05

Papermaking furnish comprising solventless cationic polymer retention aid combined with phenolic resin and polyethylene oxide

#330
20050279469
2005-12-22

Retention aid additives for paper making

#331
20050269050
2005-12-08

High performance natural zeolite microparticle retention aid for papermaking

#332
20050247420
2005-11-10

Production of paper, board and cardboard

#333
20050236123
2005-10-27

Retention and drainage in the manufacture of paper

#334
20050228058
2005-10-13

Silica-based sols and their production and use

#335
20050228057
2005-10-13

Silica-based sols and their production and use

#336
20050209389
2005-09-22

Aqueous silica-containing composition

#337
20050192402
2005-09-01

Epichlorohydrin-based polymers containing primary amino groups used as additives in papermaking

#338
20050183837
2005-08-25

Use of water-soluble polymer complexes in aqueous systems

#339
20050182181
2005-08-18

Water soluble-Polymer dispersion and method of producing a water-soluble polymer dispersion

#340
20050161183
2005-07-28

Process for making paper

#341
20050161181
2005-07-28

Method of using aldehyde-functionalized polymers to enhance paper machine dewatering

#342
20050150622
2005-07-14

Paper and paperboard production process and corresponding novel retention aids, and papers and paperboards thus obtained

#343
20050136779
2005-06-23

Process for reinforcing a hydro-entangled pulp fibre material, and hydro-entangled pulp fibre material reinforced by the process

#344
20050113462
2005-05-26

Silica-based sols

#345
20050113272
2005-05-26

Block polymers, compositions and methods of use for foams, laundry detergents, shower rinses and coagulants

#346
20050102762
2005-05-19

Cellulase preparations containing reducing agent and method of processing fiber

#347
20050070003
2005-03-31

Endoglucanases

#348
20050061462
2005-03-24

Aqueous silica-containing composition

#349
20050056390
2005-03-17

Gelled starch compositions and methods of making gelled starch compositions

#350
20050016418
2005-01-27

Binder systems derived from amorphous silica and bases

#351
20050014887
2005-01-20

Aqueous dispersions of water-soluble polymers of N-vinyl carboxylic acid amides, method for the production thereof and their use