D21H23/66 - CPC Classification Index

ClassID:

127055 ⎘

D21H23/66 - 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 Treating discontinuous paper, e.g. sheets, blanks, rolls

Sub-classes:

D21H23/68 » whereby the paper moves continuously 0

Recent Application in this class:

20260071387

2026-03-12

FIBROUS STRUCTURES WITH IMPROVED SURFACE PROPERTIES AND COLD WATER SOLUBILITY

20260015798

2026-01-15

METHOD AND COMPOSITION PROVIDING ENHANCED ALCOHOL BARRIER FOR PAPER PACKAGING APPLICATIONS

20240133120

2024-04-25

PROCESSES FOR IMPARTING OIL AND GREASE RESISTANCE TO PAPER PRODUCTS

20230346007

2023-11-02

AEROSOL-GENERATING ARTICLE WITH COMBUSTION PREVENTING WRAPPER

20230313462

2023-10-05

METHODS FOR ANALYZING PAPER AND IMPROVING THE EFFECTIVENESS OF PAPER ADDITIVES

20230068926

2023-03-02

Method of processing cannabis

20200207517

2020-07-02

Polymer coated paperboard container and method

20190127918

2019-05-02

Paper comprising aramid pulp and a friction paper made therefrom

20180209099

2018-07-26

AQUEOUS SURFACE-COATING AGENT FOR PAPER AND PAPERBOARD

#10

20180051416

2018-02-22

Method for producing paper

#11

20140137518

2014-05-22

Polymer coated paperboard container and method

#12

20120308744

2012-12-06

Printable sheet that is ultra-smooth and recyclable, and its method of fabrication

#13

20120055642

2012-03-08

IMPROVING THE STRENGTH OF PAPER AND BOARD PRODUCTS

#14

20050211405

2005-09-29

Heat resistant food packing material and method of manufacturing the food packing material

#15

17673452

2023-06-13

Method and apparatus for coating a drinking straw