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Class Information
Number: 209/235
Name: Classifying, separating, and assorting solids > Sifting > Special applications
Description: Sifting devices employed for separating particular materials or for other than the mere size grading of a given mass of particles.










Sub-classes under this class:

Class Number Class Name Patents
209/236 Distributing 23
209/237 Material testing 24


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8678195 Screening bucket Mar. 25, 2014
8646614 Classifying kits Feb. 11, 2014
8596463 Methods to increase force and change vibratory separator motion Dec. 3, 2013
8522980 Glue pellet separator Sep. 3, 2013
8517180 Process for charging a reactor with a fixed catalyst bed which comprises at least annular shaped catalyst bodies K Aug. 27, 2013
8464874 Sand cleaning apparatus and method Jun. 18, 2013
8443982 Method for grading water-absorbent polymer particles May. 21, 2013
8322535 Pomegranate seed separator Dec. 4, 2012
8307986 Material separator for delivery systems Nov. 13, 2012
8136670 Collapsible mobile material processing plant with flexible hopper Mar. 20, 2012
8123045 Apparatus for separating popped corn from un-popped kernels Feb. 28, 2012
8113355 Classifying kits Feb. 14, 2012
7967148 Method for grading water-absorbent polymer particles Jun. 28, 2011
7690512 System and method for processing shredded vegetables Apr. 6, 2010
7591379 Screen/mixer Sep. 22, 2009
7581646 Process for sorting grape berries Sep. 1, 2009
7500567 Charcoal dispensing and storage cart Mar. 10, 2009
7331468 Device for separating fine solid components, method of manufacturing the device, and method of separating fine solid components using the device Feb. 19, 2008
7240800 Vibratory sand reclaiming apparatus having normal and reject modes Jul. 10, 2007
7219805 Sieve screen level sensor May. 22, 2007
7188730 Separation system for single stream compressed recyclables Mar. 13, 2007
6935512 Shortening saver Aug. 30, 2005
6874713 Method and apparatus for improving silicon processing efficiency Apr. 5, 2005
6780002 Spreader for wood chips, wood particle and sawdust Aug. 24, 2004
6778875 Noise filter for backside helium signal Aug. 17, 2004
6722505 Rotary adjustable dirt/sand/rock separator Apr. 20, 2004
6685836 Method for separating a mixture of colloidal aluminosilicate particles Feb. 3, 2004
6659285 Tool for separating coals from ash and method of use Dec. 9, 2003
6651819 Debris removal from fluidized sand bed Nov. 25, 2003
6595370 Apparatus and method for reducing contamination in a wafer transfer chamber Jul. 22, 2003
6532495 Internet download enhancement system Mar. 11, 2003
6386373 Process for making silica powder and use of such powder in the manufacture of an optical fiber preform May. 14, 2002
6357596 Sperm strainer system Mar. 19, 2002
6328165 Marine harvesting methods and apparatus Dec. 11, 2001
6315129 Power sifter Nov. 13, 2001
6253925 Mechanical gap filter Jul. 3, 2001
6164455 Process for classifying particulate hydrophilic polymer and sieving device Dec. 26, 2000
6135290 Sifter attachment for excavating machines and the like Oct. 24, 2000
6129214 Sperm strainer system Oct. 10, 2000
6126015 Solids separating device for different sized materials Oct. 3, 2000
6092668 Litter screening machine Jul. 25, 2000
6051103 Paper-making screen apparatus Apr. 18, 2000
5806685 Confinement house cleaner Sep. 15, 1998
5727691 Animal litter containment and filtering apparatus Mar. 17, 1998
5667080 Jewelers vacuum Sep. 16, 1997
5642814 Litter separator for household pets Jul. 1, 1997
5622266 Garden sieve for wheelbarrow Apr. 22, 1997
5524768 Separator for the separation of fluidizable from non-fluidizable materials Jun. 11, 1996
5485923 Drum for particulate handling with fines collector Jan. 23, 1996
5469971 Method and apparatus for deagglomerating powder Nov. 28, 1995

1 2 3










 
 
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