D21B1/22 - CPC Classification Index

ClassID:

126314 ⎘

D21B1/22 - CPC Classification

Classification description:

Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam; Disintegrating in mills in magazine-type machines with screw feed

Recent Application in this class:

20260085470

2026-03-26

Apparatus and Method of Defibrillating and/or Defibering Cellulose Fibres and/or Ligno-cellulosic Fibres

20190388899

2019-12-26

Steam evacuation in a pulp or fiber refiner

20190345671

2019-11-14

Method for treating biomass and device for treating biomass

20150034744

2015-02-05

PROCESSOR WITH A CLOSED VESSEL THAT CAN BE PRESSURIZED

20140246530

2014-09-04

Feed screw arrangement

20120125738

2012-05-24

Screw segment

20110308141

2011-12-22

Methods and devices for continuous transfer of particulate and/or fibrous material between two zones with different temperatures and pressures

20100186609

2010-07-29

Plug screw feeder for feeding cellulose pulp/chips

20100028089

2010-02-04

Method and apparatus for conveying a cellulosic feedstock

#10

20100024808

2010-02-04

Method and apparatus for treating a cellulosic feedstock