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Class Information
Number: 162/49
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > With testing, sampling or analyzing
Description: Processes combined with a step of sampling, or chemically or physically determining some property or characteristic of the fibers or treating fluid.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609366 |
Material measurement system for obtaining coincident properties and related method |
Oct. 27, 2009 |
| 7604712 |
Method for determining chemical pulp kappa number with visible-near infrared spectrometry |
Oct. 20, 2009 |
| 7566382 |
Method and arrangement for controlling short circulation in a paper machine or the like |
Jul. 28, 2009 |
| 7452444 |
Digester wash extraction by individual screen flow control |
Nov. 18, 2008 |
| 7396437 |
Method and system for controlling the web formation |
Jul. 8, 2008 |
| 7390669 |
Simultaneous and rapid determination of multiple component concentrations in a Kraft liquor process stream |
Jun. 24, 2008 |
| 7387708 |
Process for feeding pulp into a blow tank or storage tank |
Jun. 17, 2008 |
| 7384503 |
Determination of contaminant particles in an aqueous pulp |
Jun. 10, 2008 |
| 7351305 |
Method and a digester for the continuous cooking of wood raw material to cellulose pulp |
Apr. 1, 2008 |
| 7318880 |
Method for defibring recycled fiber material in a drum pulper, and a drum pulper |
Jan. 15, 2008 |
| 7311848 |
Separation apparatus |
Dec. 25, 2007 |
| 7294234 |
Process and device for monitoring the condition of a belt |
Nov. 13, 2007 |
| 7267744 |
Pulp treatment and process |
Sep. 11, 2007 |
| 7204914 |
System and method for controlling a processor including a digester utilizing time-based assessments |
Apr. 17, 2007 |
| 7156952 |
Method and arrangement for oxygen delignification of cellulose pulp |
Jan. 2, 2007 |
| 7153391 |
Method in connection with the production of pulp, paper or paperboard |
Dec. 26, 2006 |
| 7138036 |
Monitoring device |
Nov. 21, 2006 |
| 7128808 |
Method and apparatus for identifying mapping of paper machine actuator |
Oct. 31, 2006 |
| 7115188 |
Process and apparatus for monitoring dewatering in a wet section of a paper machine |
Oct. 3, 2006 |
| 7077930 |
Method for controlling screening by measuring flow amount consistency of the pulp |
Jul. 18, 2006 |
| 7074299 |
Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp |
Jul. 11, 2006 |
| 7018509 |
Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing |
Mar. 28, 2006 |
| 6946056 |
Method for regulating the manufacturing of pulp by optically measuring the amount of hexenuronic acid |
Sep. 20, 2005 |
| 6939439 |
Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester |
Sep. 6, 2005 |
| 6913672 |
Methods for analyzing boron-containing alkaline pulping liquors |
Jul. 5, 2005 |
| 6884320 |
Method and apparatus for producing and testing a fiber bed |
Apr. 26, 2005 |
| 6846381 |
Method for controlling quality of pulp |
Jan. 25, 2005 |
| 6841390 |
Method for sensing stickies |
Jan. 11, 2005 |
| 6833054 |
Method and apparatus for adjusting chemical dosage of pulp processing stage |
Dec. 21, 2004 |
| 6773552 |
Method of selecting and/or processing wood according to fibre characteristics |
Aug. 10, 2004 |
| 6772036 |
Control system using process model |
Aug. 3, 2004 |
| 6712937 |
Method of operating a machine for the manufacture and/or refinement of material webs |
Mar. 30, 2004 |
| 6712936 |
Method for manufacturing paper and paperboard using fracture toughness measurement |
Mar. 30, 2004 |
| 6635147 |
Method for analyzing boron-containing alkaline pulping liquors |
Oct. 21, 2003 |
| 6589389 |
Test method for determining bleed-throughs in old corrugated container fiber pulp |
Jul. 8, 2003 |
| 6551451 |
Method for determining liquid content in chemical pulps using ramen spectrometry |
Apr. 22, 2003 |
| 6524437 |
Process for peroxide bleaching wherein the concentrations of Mn and Fe are monitored and maintained |
Feb. 25, 2003 |
| 6475339 |
Method for rapidly determining a pulp kappa number using spectrophotometry |
Nov. 5, 2002 |
| 6447639 |
Process for controlling a digester using real time measurement of moisture content and species of wood |
Sep. 10, 2002 |
| 6432265 |
Sampling method and method for cleaning sampling apparatus |
Aug. 13, 2002 |
| 6398914 |
Method and device for process control in cellulose and paper manufacture |
Jun. 4, 2002 |
| 6339222 |
Determination of ionic species concentration by near infrared spectroscopy |
Jan. 15, 2002 |
| 6332951 |
Method for measuring the content of bleaching chemicals used for bleaching cellulose fibers |
Dec. 25, 2001 |
| 6319359 |
Process for quantitatively detecting constituents of a pulp/fluid mixture |
Nov. 20, 2001 |
| 6302996 |
Method and apparatus for washing fiber pulp mixture |
Oct. 16, 2001 |
| 6287416 |
Sampling apparatus with removable filter for cleaning |
Sep. 11, 2001 |
| 6273994 |
Method and device for measuring bleach requirement, bleachability, and effectivenss of hemicellulase enzyme treatment of pulp |
Aug. 14, 2001 |
| 6238517 |
Method for controlling oxygen delignification of pulp |
May. 29, 2001 |
| 6174409 |
Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process |
Jan. 16, 2001 |
| 6153050 |
Method and system for controlling the addition of bleaching reagents to obtain a substantially constant percentage of pulp delignification across the first bleaching/delignifying stage |
Nov. 28, 2000 |
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