Patents-Review.com
ClassID:

127037 ⎘

D21H23/30 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added; Addition to the formed paper Pretreatment of the paper

Recent Application in this class:
#1
20250163648
2025-05-22

IN-LINE APPLICATION OF DISPERSION BARRIER

 #2
20230123531
2023-04-20

Paper-based flexible packaging material with high barrier properties and a process to produce it

 #3
20220349126
2022-11-03

Manufacturing process of intermittent coating release paper

 #4
20220328837
2022-10-13

INTERLAYER MATERIAL FOR LITHIUM-SULFUR BATTERY, AND LITHIUM-SULFUR BATTERY

 #5
20220267961
2022-08-25

Smooth and low density paperboard structures and methods for manufacturing the same

 #6
20220251786
2022-08-11

Fiber body forming method and fiber body forming apparatus

 #7
20210340709
2021-11-04

METHOD FOR PRODUCING SHEET FOR HEAT-INSULATING FOAMED PAPER CONTAINER

 #8
20200370245
2020-11-26

Composition for paper coating slip

 #9
20200354894
2020-11-12

Smooth and low density paperboard structures and methods for manufacturing the same

 #10
20200216678
2020-07-09

Compositions and methods for pretreating substrates for the subsequent fixing of vapor phase corrosion inhibitors

 #11
20200165781
2020-05-28

FIBER BODY FORMING METHOD AND FIBER BODY FORMING APPARATUS

 #12
20200165780
2020-05-28

Fiber body forming method and fiber body forming apparatus

 #13
20170100943
2017-04-13

Systems and methods for implementing a post-processing scheme for minimizing curl in sets of output image receiving media substrates imaged in image forming devices

 #14
20160076202
2016-03-17

Basecoat and associated paperboard structure

 #15
20150020985
2015-01-22

Wet strength treated paper and paperboard

 #16
20120186763
2012-07-26

Method for coating dry finish paperboard

 #17
20120145040
2012-06-14

Basecoat and Associated Paperboard Structure

 #18
20110315332
2011-12-29

Method for coating dry finish paperboard

 #19
20100006251
2010-01-14

METHOD AND ARRANGEMENT FOR THE PRODUCTION OF A WOOD-FREE COATED, MATTE OR SEMI-MATTE PAPER WEB

 #20
20090297840
2009-12-03

METHOD FOR APPLYING A METAL ON PAPER

 #21
20090239047
2009-09-24

Basecoat and associated paperboard structure

 #22
20090236062
2009-09-24

Method for coating dry finish paperboard

 #23
20090205853
2009-08-20

METHOD FOR APPLYING A METAL ON A SUBSTRATE

 #24
20080251223
2008-10-16

Board Product and Method of Making the Same

 #25
20070169902
2007-07-26

Method of producing coated paper with reduced gloss mottle

 #26
20070166462
2007-07-19

Method and system for producing a wood-free coated matte or semi-matte paper web

 #27
20070071899
2007-03-29

Method for increasing moisture content in extrusion coated paperboard

 #28
20060124262
2006-06-15

Board product and method for making the same

 #29
20060102303
2006-05-18

Board product and method for making the same

 #30
20060065190
2006-03-30

Application device

 #31
20060000410
2006-01-05

Curtain coater

 #32
20050199359
2005-09-15

Method for manufacturing laminated hd (high-density) paper with good oxygen-barrier properties, and hd paper obtained thereby

 #33
20050145353
2005-07-07

Rolled paper product having high bulk and softness

 #34
20050126729
2005-06-16

Method for manufacturing base paper for release paper

 #35
20050098284
2005-05-12

Method for treating the surface of a web

 #36
20050089641
2005-04-28

Method and apparatus for making a multilayer coating

 #37
20050048300
2005-03-03

Method for increasing moisture content in extrusion coated paperboard

 #38
20050048207
2005-03-03

Treatment of natural polymer based materials and the products based thereon