D21H23/00 - CPC Classification Index

ClassID:

127022 ⎘

D21H23/00 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper

Sub-classes:

D21H23/02 » characterised by the manner in which substances are added 8
D21H23/76 » 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 22
D21H23/78 » Controlling or regulating not limited to any particular process or apparatus 47

Recent Application in this class:

20200181846

2020-06-11

METHOD AND DEVICE FOR PRODUCING NANO FILMS

20190271116

2019-09-05

Paper with water repellent and partially heat sealing properties

20170165712

2017-06-15

System and method for continuously pulling substrates through a coater

20140363662

2014-12-11

Paper laminates made from decor paper having improved optical performance comprising treated inorganic particles

20130139983

2013-06-06

Production of filled paper using biodegradable polyester fibers and/or polyalkylene carbonate fibers

20130126115

2013-05-23

Wet-end manufacturing process for bitumen-impregnated fiberboard

20130112360

2013-05-09

Process for manufacturing paper or board

20120279670

2012-11-08

Wet-end manufacturing process for bitumen-impregnated fiberboard

20120248007

2012-10-04

Wet-end manufacturing process for bitumen-impregnated fiberboard

#10

20120247701

2012-10-04

Wet-end manufacturing process for bitumen-impregnated fiberboard

#11

20120247700

2012-10-04

Wet-end manufacturing process for bitumen-impregnated fiberboard

#12

20120021235

2012-01-26

Wet-end manufacturing process for bitumen-impregnated fiberboard

#13

20110017416

2011-01-27

Wet-end manufacturing process for bitumen-impregnated fiberboard

#14

20110017415

2011-01-27

Wet-end manufacturing process for bitumen-impregnated fiberboard

#15

20110010790

2011-01-13

Plants with modified lignin content and methods for production thereof

#16

20100059191

2010-03-11

HEAT, GREASE, AND CRACKING RESISTANT RELEASE PAPER AND PROCESS FOR PRODUCING THE SAME

#17

20100055485

2010-03-04

Wet-end manufacturing process for bitumen-impregnated fiberboard

#18

20060289139

2006-12-28

Retention and drainage in the manufacture of paper