ClassID:

126935

D21H17/68 - page 2 - CPC Classification

Classification description:

Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution; Inorganic compounds; Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Recent Application in this class:
#301
20050247420
2005-11-10

Production of paper, board and cardboard

#302
20050247418
2005-11-10

Hyperplaty clays and their use in paper coating and filling, methods for making same, and paper products having improved brightness

#303
20050245388
2005-11-03

Zeolite compositions and their use

#304
20050236123
2005-10-27

Retention and drainage in the manufacture of paper

#305
20050228058
2005-10-13

Silica-based sols and their production and use

#306
20050228057
2005-10-13

Silica-based sols and their production and use

#307
20050209389
2005-09-22

Aqueous silica-containing composition

#308
20050178514
2005-08-18

Kaolin pigment having high brightness and narrow particle size distribution and method of preparation therefor

#309
20050178292
2005-08-18

Hyperplaty clays and their use in paper coating and filling, methods for making same, and paper products having improved brightness

#310
20050173088
2005-08-11

White pitch deposit treatment

#311
20050161183
2005-07-28

Process for making paper

#312
20050150622
2005-07-14

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

#313
20050126730
2005-06-16

Kaolin products and their use

#314
20050113462
2005-05-26

Silica-based sols

#315
20050103459
2005-05-19

Paper and paper coating products produced using multi-phase calcium silicate hydrates

#316
20050098283
2005-05-12

Kaolin clay pigments suited to rotogravure printing applications and method for preparing the same

#317
20050061462
2005-03-24

Aqueous silica-containing composition

#318
20050034830
2005-02-17

Wet-type paper friction member

#319
20050016418
2005-01-27

Binder systems derived from amorphous silica and bases

#320
18424253
2024-10-08

Corona-resistant N-grade insulation paper for variable frequency motor and preparation method thereof