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Class Information
Number: 162/17
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > Continuous chemical treatment or continuous charging or discharging
Description: Processes in which the fibrous material passes substantially continuously into and out of the treating zone.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7445691 |
Impregnation of chips with an acid liquid prior to a sulphate pulping process |
Nov. 4, 2008 |
| 7422657 |
Method for the feed of cellulose chips during the continuous cooking of cellulose |
Sep. 9, 2008 |
| 7374637 |
Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate |
May. 20, 2008 |
| 7368037 |
Refiner steam separation system for reduction of dryer emissions |
May. 6, 2008 |
| 7351305 |
Method and a digester for the continuous cooking of wood raw material to cellulose pulp |
Apr. 1, 2008 |
| 7279070 |
Method for the continuous cooking of wood raw material for cellulose pulp |
Oct. 9, 2007 |
| 7229525 |
Methods to enhance pulp bleaching and delignification |
Jun. 12, 2007 |
| 7226525 |
Process for producing very low COD unbleached pulp |
Jun. 5, 2007 |
| 7217338 |
Process for continuously cooking chemical cellulose pulp |
May. 15, 2007 |
| 7147750 |
Extraction with compaction and springback considerations |
Dec. 12, 2006 |
| 7105076 |
Gas phase continuous digester having an inverted top separator with liquor injection |
Sep. 12, 2006 |
| RE39208 |
Method of treating material in a continuous digester |
Aug. 1, 2006 |
| 7081183 |
Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
Jul. 25, 2006 |
| 7081184 |
Process for making a very low COD unbleached pulp |
Jul. 25, 2006 |
| 7060162 |
Chip bin |
Jun. 13, 2006 |
| 7056418 |
Cooking method for pulp |
Jun. 6, 2006 |
| 6986829 |
Process and container for stacking high-consistency stock |
Jan. 17, 2006 |
| 6966970 |
Method for supplying washing liquid to a process for cooking cellulose pulp |
Nov. 22, 2005 |
| 6808596 |
System for the oxygen delignification of pulp consisting of lignocellulose-containing material |
Oct. 26, 2004 |
| 6752902 |
Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
Jun. 22, 2004 |
| 6719878 |
Method for avoiding mechanical damage of pulp |
Apr. 13, 2004 |
| 6699357 |
Process for continuous cooking of pulp |
Mar. 2, 2004 |
| 6673201 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
Jan. 6, 2004 |
| 6649023 |
Process for digesting woodchips and digester additives |
Nov. 18, 2003 |
| 6605180 |
Process for continuous cooking of pulp |
Aug. 12, 2003 |
| 6589391 |
Top separator with intraseal for digester vessel in a pulp or fiber processing system |
Jul. 8, 2003 |
| 6582554 |
Continuous digester having a sectioned top separator with multiple liquor extraction ports |
Jun. 24, 2003 |
| 6551452 |
Process for digesting woodchips and digester additives |
Apr. 22, 2003 |
| 6544385 |
Channel pulper |
Apr. 8, 2003 |
| 6544384 |
Pretreatment of chips before cooking |
Apr. 8, 2003 |
| 6506283 |
Pretreatment of chips before cooking |
Jan. 14, 2003 |
| 6464826 |
Method for producing and treating wood fiber |
Oct. 15, 2002 |
| 6451163 |
Method of handling comminuted cellulosic fibrous slurry in a cylindrical vessel |
Sep. 17, 2002 |
| 6436233 |
Feeding cellulose material to a treatment vessel |
Aug. 20, 2002 |
| 6432264 |
Method of making a vessel assembly for handling comminuted cellulosic fibrous material |
Aug. 13, 2002 |
| 6375796 |
Method of treating material in a continuous digester |
Apr. 23, 2002 |
| 6375795 |
Minimization of malodorous gas release from a cellulose pulp mill feed system |
Apr. 23, 2002 |
| 6361649 |
Method for the continuous cooking of chemical pulp |
Mar. 26, 2002 |
| 6350348 |
Batch cooking with black liquor pretreatment |
Feb. 26, 2002 |
| 6344112 |
Screen having inclined slots for a digester |
Feb. 5, 2002 |
| 6325888 |
Method for pulping sawdust |
Dec. 4, 2001 |
| 6322665 |
Reactive compounds to fibrous webs |
Nov. 27, 2001 |
| 6284095 |
Minimization of malodorous gas release from a cellulose pulp mill feed system |
Sep. 4, 2001 |
| 6277240 |
Method for continuously pulping cellulosic fibrous material |
Aug. 21, 2001 |
| 6264791 |
Flash curing of fibrous webs treated with polymeric reactive compounds |
Jul. 24, 2001 |
| 6261412 |
Regenerative heat recovery for high temperature condensate stripping plants |
Jul. 17, 2001 |
| 6248208 |
Pretreatment of chips before cooking |
Jun. 19, 2001 |
| 6203662 |
Method for the continuous cooking of pulp in a digester system having a top separator |
Mar. 20, 2001 |
| 6179958 |
Method for continuous cooking of cellulose-containing fibre material |
Jan. 30, 2001 |
| 6174411 |
Continuous digester with inverted top separator |
Jan. 16, 2001 |
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