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Class Information
Number: 162/234
Name: Paper making and fiber liberation > Apparatus > Digester > With mechanical defibering means
Description: Apparatus combined with means to physically disrupt the bond material causing adherence of fibers one to the other.










Sub-classes under this class:

Class Number Class Name Patents
162/235 Concurrent 2


Patents under this class:

Patent Number Title Of Patent Date Issued
8361279 Extraction bedplate and method for manufacturing an extraction bedplate Jan. 29, 2013
8216426 Extraction bedplate and method for manufacturing an extraction bedplate Jul. 10, 2012
7905983 Refiner steam separation system for reduction of dryer emissions Mar. 15, 2011
7718034 Refiner steam separation system for reduction of dryer emissions May. 18, 2010
7691235 Apparatus and method for separating steam from pulp fibers Apr. 6, 2010
7368037 Refiner steam separation system for reduction of dryer emissions May. 6, 2008
6989074 Paper pulp refiner control system and method using active hydrostatic bearings Jan. 24, 2006
6911118 Pulper for producing paper pulp from waste paper Jun. 28, 2005
6841101 Production of high added value products from resin-bonded waste composite wood products Jan. 11, 2005
6464826 Method for producing and treating wood fiber Oct. 15, 2002
6447645 Feeding cellulose material to a treatment vessel Sep. 10, 2002
6156159 Device for mixing of a fluid into a pulp-suspension Dec. 5, 2000
6051109 Apparatus for distributing fluffed pulp into a static bed reactor Apr. 18, 2000
6042036 Refining element Mar. 28, 2000
5645690 Pressure relief system for treating fibrous materials under pressure Jul. 8, 1997
5603883 Process of and apparatus for making celluose products Feb. 18, 1997
5500084 Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone Mar. 19, 1996
5089089 System for sulfonating mechanical pulp fibers Feb. 18, 1992
4838995 Process for bleaching cellulose pulp, a plant for preforming said process, and a screw press for use with said process and plant Jun. 13, 1989
4597832 Apparatus for converting biomass to a pumpable slurry Jul. 1, 1986
4326913 Method and apparatus in defibration Apr. 27, 1982
4317701 Apparatus for treating waste-paper Mar. 2, 1982
4138311 Method and apparatus for batch production of pulp including improved energy reclamation Feb. 6, 1979
4093511 Apparatus for oxygen bleaching of pulp including recirculation of exhaust gases Jun. 6, 1978
4062722 Device for treating deformable particles with the counterflowing liquids Dec. 13, 1977
3989588 Apparatus for producing kraft type pulp Nov. 2, 1976











 
 
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