Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21D - Treatment of the materials before passing to the paper-making machine
More topics under "D21D - Treatment of the materials before passing to the paper-making machine" (7,540)
D21D 1 - Methods of beating or refining; Beaters of the hollander type (3,356)
D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157)
D21D 99 - Subject matter not provided for in other groups of this subclass (27)
Patents for D21D - Treatment of the materials before passing to the paper-making machine (115)
05/2014
05/27/2014CA2624767C Screen cylinder
05/06/2014US8713798 Screen cylinder
10/2013
10/22/2013CA2572988C A method of manufacturing a screen cylinder and a screen cylinder
04/2013
04/16/2013CA2590271C Screen and method for screening pulp
10/2012
10/09/2012CA2503762C A perforated deck made out of a plurality of segments
05/2012
05/29/2012CA2544825C Screening apparatus and screen basket for screening pulp suspensions
04/2012
04/18/2012CN101300387B 筛鼓 Drum sieve
04/04/2012EP1592841B1 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
05/2011
05/03/2011US7934672 Refiner blade and segment, as well as a method of forming them and a method of modifying blade grooves
04/2011
04/26/2011US7931779 Screening apparatus and screen basket for screening pulp suspensions
02/2011
02/24/2011US20110042300 Screen cylinder
12/2010
12/28/2010US7856718 Method of manufacturing a screen cylinder and a screen cylinder
10/2010
10/26/2010US7820013 Screen cylinder
06/2010
06/15/2010US7735655 Screen and method for screening pulp
04/2010
04/21/2010CN1742134B Apparatus and method in the treatment of the stock passed to a headbox of a paper machine
04/07/2010CN101103153B Screen and method for screening pulp
02/2010
02/24/2010CN100591847C A method of manufacturing a screen cylinder and a screen cylinder
09/2009
09/24/2009US20090236267 Screen and method for screening pulp
08/2009
08/26/2009CN100532706C Screening apparatus and screen basket for screening pulp suspensions
05/2009
05/26/2009US7537732 Using fluorescent stained wood pulp fibers and a light beam to analyze and measure properties of interest in the wood pulp fibers; measuring fiber length, shape and uniformity of wood pulp; papermaking
03/2009
03/24/2009US7506767 Method for manufacturing screen cylinder and screen cylinder
03/11/2009CN100467714C Method for manufacturing screen cylinder and screen cylinder
01/2009
01/14/2009EP1969177A4 Refiner blade and segment, as well as a method of forming them and a method of modifying blade grooves
12/2008
12/30/2008US7470347 Device and method withdrawing cellulose pulp from a container
12/11/2008US20080302897 Refiner Blade and Segment, as Well as a Method of Forming Them and a Method of Modifying Blade Grooves
12/10/2008CN101321909A Refiner blade and segment, as well as a method of forming them and a method of modifying blade grooves
11/2008
11/13/2008US20080277087 Screen Cylinder
11/05/2008CN101300387A 筛鼓 Drum sieve
10/2008
10/01/2008CN100422438C Web smoothness improvement process
09/2008
09/17/2008EP1969177A1 Refiner blade and segment, as well as a method of forming them and a method of modifying blade grooves
08/2008
08/13/2008EP1954874A1 Screen cylinder
08/05/2008US7407563 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
01/2008
01/09/2008CN101103153A Screen and method for screening pulp
11/2007
11/14/2007EP1654416B1 Method and device for separating material flows
11/01/2007US20070251092 Method of Mnaufacturing a Screen Cylinder and a Screen Cylinder
10/2007
10/25/2007US20070246181 Screening Apparatus and Screen Basket for Screening Pulp Suspensions
10/23/2007US7285180 Cylindrical rotating thickening device with an axial core,a shell around the core and a replaceable deck on the outside diameter of the press roll shell; deck sections can then be easily replaced with out removing the press rolls
10/03/2007EP1656479B1 Method for manufacturing screen cylinder and screen cylinder
09/2007
09/05/2007EP1828474A1 Screen and method for screening pulp
07/2007
07/25/2007EP1702102B1 Device and method withdrawing cellulose pulp from a container
07/25/2007CN101006225A A method of manufacturing a screen cylinder and a screen cylinder
07/11/2007EP1680543B1 Screening apparatus and screen basket for screening pulp suspensions
07/05/2007US20070151693 Device and method withdrawing cellulose pulp from a container
06/2007
06/14/2007WO2007065971A1 Refiner blade and segment, as well as a method of forming them and a method of modifying blade grooves
05/2007
05/10/2007WO2007051908A1 Screen cylinder
05/10/2007CA2624767A1 Screen cylinder
04/2007
04/18/2007EP1774089A2 A method of manufacturing a screen cylinder and a screen cylinder
03/2007
03/07/2007EP1759058A1 Method for manufacturing paper or similar
02/2007
02/01/2007US20070023331 Method for manufacturing screen cylinder and screen cylinder
12/2006
12/06/2006CN1875146A Screening apparatus and screen basket for screening pulp suspensions
09/2006
09/27/2006CN1839230A Method for manufacturing screen cylinder and screen cylinder
09/20/2006EP1702102A1 Device and method withdrawing cellulose pulp from a container
08/2006
08/16/2006CN1820107A Method and arrangement for treating pulp
07/2006
07/19/2006EP1680543A1 Screening apparatus and screen basket for screening pulp suspensions
06/2006
06/15/2006WO2006061464A1 Screen and method for screening pulp
06/15/2006CA2590271A1 Screen and method for screening pulp
05/2006
05/18/2006US20060102308 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
05/17/2006EP1656479A1 Method for manufacturing screen cylinder and screen cylinder
05/10/2006EP1654416A1 Method and device for separating material flows
04/2006
04/13/2006WO2006008332A3 A method of manufacturing a screen cylinder and a screen cylinder
03/2006
03/29/2006EP1639347A2 Method and apparatus for assaying wood pulp fibers
03/01/2006CN1742134A Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
01/2006
01/26/2006WO2006008332A2 A method of manufacturing a screen cylinder and a screen cylinder
01/26/2006CA2572988A1 A method of manufacturing a screen cylinder and a screen cylinder
12/2005
12/29/2005WO2005124020A1 Method for manufacturing paper or similar
11/2005
11/09/2005EP1592841A1 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
10/2005
10/20/2005US20050230306 Perforated deck made out of a plurality of segments
08/2005
08/24/2005CN1659336A Web smoothness improvement process
07/2005
07/07/2005WO2005061781A1 Device and method withdrawing cellulose pulp from a container
05/2005
05/19/2005WO2005045128A1 Screening apparatus and screen basket for screening pulp suspensions
03/2005
03/03/2005WO2005019529A1 Method for manufacturing screen cylinder and screen cylinder
02/2005
02/24/2005WO2005017253A1 Method and device for separating material flows
01/2005
01/27/2005US20050019948 Method and apparatus for assaying wood pulp fibers
01/05/2005EP1492921A2 Web smoothness improvement process
12/2004
12/16/2004WO2004076740A3 Method and apparatus for assaying wood pulp fibers
09/2004
09/10/2004WO2004076740A2 Method and apparatus for assaying wood pulp fibers
09/10/2004CA2555968A1 Method and apparatus for assaying wood pulp fibers
08/2004
08/26/2004WO2004072365A1 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
08/26/2004CA2512222A1 Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent
07/2004
07/01/2004US20040123966 Web smoothness improvement process
04/2004
04/08/2004WO2003085192A9 Web smoothness improvement process
03/2004
03/04/2004WO2003085192A3 Web smoothness improvement process
10/2003
10/16/2003WO2003085192A2 Web smoothness improvement process
10/16/2003CA2481067A1 Web smoothness improvement process
02/2000
02/29/2000US6029825 Pressure sorter for sorting fiber suspensions as well as screen for such a pressure sorter
12/1999
12/21/1999CA2210877C Fibre suspension pressure sorting machine and sieve for such pressure sorting machines
08/1996
08/08/1996WO1996023930A1 Fibre suspension pressure sorting machine and sieve for such pressure sorting machines
07/1994
07/05/1994CA1330543C Multiscreen pressure diffuser
04/1993
04/20/1993CA1316386C High-consistency pulp tower and method of discharging pulp from the tower
06/1992
06/23/1992CA1304142C Method and apparatus for controlling the production of thermal mechanical pulp
05/1992
05/13/1992EP0371066B1 Method and apparatus for controlling the production of refined stock
05/1991
05/21/1991US5016824 Method and apparatus for controlling the production of thermomechanical pulp
06/1990
06/06/1990EP0371066A1 Method and apparatus for controlling the production of refined stock.
01/1989
01/26/1989WO1989000624A1 Method and apparatus for controlling the production of refined stock
06/1988
06/01/1988EP0269124A2 High-consistency pulp tower for discharging said pulp
01/1988
01/26/1988CA1231973A1 META- AND PARA-ISOPROPENYL-.alpha.,.alpha.- DIMETHYLBENZYLAMINE
09/1987
09/01/1987US4690895 Use of rLDM™ 1-6 and other ligninolytic enzymes in the bleaching of kraft pulp
06/1987
06/23/1987CA1223216A1 Drum filter assembly for extracting filtrate from a fiber suspension
11/1986
11/19/1986CN86102786A Foam applicator used inpaper treatment
10/1986
10/08/1986EP0196576A1 Foam applicator used in paper treatment
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