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Class Information
Number: 209/273
Name: Classifying, separating, and assorting solids > Sifting > With liquid treatment > Stationary sifters
Description: Means and methods wherein stationary sifters are employed to sift material suspended in liquid or are associated with liquid-supply means which promote the sifting action.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7597201 |
Device for cleaning fibrous suspensions for paper production |
Oct. 6, 2009 |
| 7296684 |
Screen for cleaning a fiber suspension |
Nov. 20, 2007 |
| 7163106 |
Strainer for cleaning fibrous suspensions |
Jan. 16, 2007 |
| 7121411 |
Screen apparatus |
Oct. 17, 2006 |
| 6942104 |
Rotor with multiple foils for screening apparatus for papermaking pulp |
Sep. 13, 2005 |
| 6923329 |
Screen apparatus |
Aug. 2, 2005 |
| RE38738 |
Cylindrical screen, particularly for paper pulp |
May. 31, 2005 |
| 6883669 |
Multi-element airfoil for pulp screens |
Apr. 26, 2005 |
| 6868971 |
Solids/liquids separator |
Mar. 22, 2005 |
| 6726022 |
Screening device and rotor for use in a screening device |
Apr. 27, 2004 |
| 6679384 |
Method and means for paper pulp filtering |
Jan. 20, 2004 |
| 6669025 |
Screen |
Dec. 30, 2003 |
| 6631809 |
Screen for cleaning a pulp suspension |
Oct. 14, 2003 |
| 6588599 |
Screen for pulp processing |
Jul. 8, 2003 |
| 6571957 |
Screening apparatus for fiber suspension |
Jun. 3, 2003 |
| 6530482 |
Tandem shale shaker |
Mar. 11, 2003 |
| 6530481 |
Pressure screen with scrap separation |
Mar. 11, 2003 |
| 6499603 |
Screen for cleaning pulp suspensions |
Dec. 31, 2002 |
| 6491168 |
Pulp screen basket |
Dec. 10, 2002 |
| 6409023 |
Process and device for fractioning a suspension containing paper fibers |
Jun. 25, 2002 |
| 6360897 |
Screen device comprising two screen chambers for separating fiber suspensions |
Mar. 26, 2002 |
| 6348130 |
Variable pressure screening |
Feb. 19, 2002 |
| 6338412 |
Cylindrical screen, particularly for paper pulp |
Jan. 15, 2002 |
| 6329436 |
Process to recycle shredder residue |
Dec. 11, 2001 |
| 6311850 |
Pressure screening apparatus for screening a paper stock suspension and screen clearer for such a screening apparatus |
Nov. 6, 2001 |
| 6290067 |
Screening apparatus with dilution liquid supply means |
Sep. 18, 2001 |
| 6273266 |
Process for the wet screening of stock suspensions in pressure graders and pressure graders screen |
Aug. 14, 2001 |
| 6260709 |
Membrane filter element for chemical-mechanical polishing slurries |
Jul. 17, 2001 |
| 6241102 |
Screening device |
Jun. 5, 2001 |
| 6216877 |
Screen panel and method of its manufacture |
Apr. 17, 2001 |
| 6206204 |
Screen apparatus |
Mar. 27, 2001 |
| 6193073 |
Paper stock screening apparatus and method |
Feb. 27, 2001 |
| 6186333 |
Method and arrangement for controlling a multi-phase screening apparatus |
Feb. 13, 2001 |
| 6170769 |
Screening apparatus with reject flow restriction means |
Jan. 9, 2001 |
| 6155427 |
Zoned pressure screen |
Dec. 5, 2000 |
| 6149015 |
Screen apparatus for papermaking material |
Nov. 21, 2000 |
| 6129215 |
Programmed method of and apparatus for screening debris |
Oct. 10, 2000 |
| 6119867 |
Screen cylinder |
Sep. 19, 2000 |
| 6117273 |
Mechanical strainer for fibrous suspensions |
Sep. 12, 2000 |
| 6096210 |
Screening system |
Aug. 1, 2000 |
| 6053327 |
Process for enriching nickel-bearing oxide ores |
Apr. 25, 2000 |
| 6029825 |
Pressure sorter for sorting fiber suspensions as well as screen for such a pressure sorter |
Feb. 29, 2000 |
| 6029821 |
Screening device |
Feb. 29, 2000 |
| 6016920 |
Programmed method of and apparatus for screening debris |
Jan. 25, 2000 |
| 6010013 |
Universal method of and apparatus for screening debris |
Jan. 4, 2000 |
| 6010012 |
Fluidizing detrashing impeller |
Jan. 4, 2000 |
| 5992641 |
Methods and apparatus for screening particulate materials |
Nov. 30, 1999 |
| 5960962 |
Screen |
Oct. 5, 1999 |
| 5954956 |
Modular screen cylinder and a method for its manufacture |
Sep. 21, 1999 |
| 5925249 |
Screening arrangement |
Jul. 20, 1999 |
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