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Class Information
Number: 162/56
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > With squeezing, compression, rubbing, kneading
Description: Processes combined with a step of applying a mechanical force to the fibrous material, of sufficient magnitude to remove at least a portion of a liquid associated with such material from the cells or surfaces thereof, or to knead or rub the fibrous material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7601243 |
Method for conveying, mixing, and leveling dewatered pulp prior to drying |
Oct. 13, 2009 |
| 7560008 |
Extraction with compaction and springback considerations |
Jul. 14, 2009 |
| 7455749 |
Gas phase continuous digester having an inverted top separator with liquor injection |
Nov. 25, 2008 |
| 7402224 |
Method for producing paper pulp, lignins, sugars and acetic acid by frantionation of lignocellulosic vegetable material in formic/acetic acid medium |
Jul. 22, 2008 |
| 7396435 |
Method for conveying, mixing, and leveling dewatered pulp prior to drying |
Jul. 8, 2008 |
| 7390378 |
Method of curling fiber and absorbent sheet containing same |
Jun. 24, 2008 |
| 7384502 |
Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness |
Jun. 10, 2008 |
| 7364639 |
Method of producing twisted, curly fibers |
Apr. 29, 2008 |
| 7314538 |
Process and device for discharging lignocellulose raw materials from a digester and conveying the raw material to a refiner |
Jan. 1, 2008 |
| 7300541 |
High defiberization chip pretreatment |
Nov. 27, 2007 |
| 7300540 |
Energy efficient TMP refining of destructured chips |
Nov. 27, 2007 |
| 7282114 |
Method for processing pulp |
Oct. 16, 2007 |
| 7229527 |
Method for the controlled thickening of low consistency fiber suspensions |
Jun. 12, 2007 |
| 7189306 |
Process of treating lignocellulosic material to produce bio-ethanol |
Mar. 13, 2007 |
| 7182835 |
Two-stage chlorine bleaching process with filtrate recirculation |
Feb. 27, 2007 |
| 7097740 |
Method and screen for screening at least two pulp mixtures |
Aug. 29, 2006 |
| 6866749 |
Method for bleaching paper pulp with organic peracids followed by peroxide and sodium hydroxide |
Mar. 15, 2005 |
| 6818099 |
Raw material for printing paper, method to produce it and printing paper |
Nov. 16, 2004 |
| 6767432 |
Apparatus for the thickening of fiber suspensions |
Jul. 27, 2004 |
| 6736934 |
Method of pretreating pulp in an acid tower prior to bleaching with peroxide |
May. 18, 2004 |
| 6576088 |
Process for preparing dry broke |
Jun. 10, 2003 |
| 6562192 |
Absorbent articles with absorbent free-flowing particles and methods for producing the same |
May. 13, 2003 |
| 6558557 |
Process and a decker for bringing together two suspension layers |
May. 6, 2003 |
| 6514381 |
Method and apparatus for continuous mechanical thickening of slurry |
Feb. 4, 2003 |
| 6447645 |
Feeding cellulose material to a treatment vessel |
Sep. 10, 2002 |
| 6436233 |
Feeding cellulose material to a treatment vessel |
Aug. 20, 2002 |
| 6432263 |
Process for increasing the water retention capacity in fibrous webs |
Aug. 13, 2002 |
| 6419786 |
Method for bleaching wood pulp containing recycled paper |
Jul. 16, 2002 |
| 6409883 |
Methods of making fiber bundles and fibrous structures |
Jun. 25, 2002 |
| 6391151 |
Process for dissolving used paper |
May. 21, 2002 |
| 6372086 |
Pulper and countercurrent washer sugar cane extraction |
Apr. 16, 2002 |
| 6354514 |
Method and apparatus for treating material having poor thermal conductivity |
Mar. 12, 2002 |
| 6348127 |
Process for production of chemical pulp from herbaceous plants |
Feb. 19, 2002 |
| 6336993 |
Metal removal from comminuted fibrous material during feeding |
Jan. 8, 2002 |
| 6325890 |
Feeding comminuted fibrous material |
Dec. 4, 2001 |
| 6290811 |
Method for recycling of old corrugated container using flotation and kneading treatment |
Sep. 18, 2001 |
| 6221265 |
Method and device for concentrating liquid-drenched material |
Apr. 24, 2001 |
| 6200417 |
Process and device for mixing stock suspensions |
Mar. 13, 2001 |
| 6174369 |
Device for impregnation of webs of porous materials |
Jan. 16, 2001 |
| 6162326 |
Process for draining a fibrous pulp suspension |
Dec. 19, 2000 |
| 6159338 |
Supply of washing liquid in a fractionating multi-stage washer |
Dec. 12, 2000 |
| 6143133 |
Method and device for drainage of a fibrous suspension |
Nov. 7, 2000 |
| 6139685 |
Method and device for treating a pulp suspension |
Oct. 31, 2000 |
| 6126781 |
Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
Oct. 3, 2000 |
| 6117273 |
Mechanical strainer for fibrous suspensions |
Sep. 12, 2000 |
| 6106669 |
Process for thickening a fibrous pulp suspension |
Aug. 22, 2000 |
| 6106668 |
Method for feeding comminuted fibrous material |
Aug. 22, 2000 |
| 6071378 |
Method and device for treating a pulp suspension |
Jun. 6, 2000 |
| 6042735 |
Process and device to drain a fibrous pulp suspension |
Mar. 28, 2000 |
| 6036029 |
Device to drain a fibrous pulp suspension |
Mar. 14, 2000 |
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