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Class Information
Number: 261/5
Name: Gas and liquid contact apparatus > With liquid separations > Filtering
Description: The separator on the outlet including a filter.










Sub-classes under this class:

Class Number Class Name Patents
261/6 Unitary structure 12


Patents under this class:

Patent Number Title Of Patent Date Issued
8662479 Respiratory humidification system Mar. 4, 2014
8496232 Misting device for boats Jul. 30, 2013
8282084 Respiratory humidification system Oct. 9, 2012
8256746 Integrated cross-flow reservoir Sep. 4, 2012
8181938 Humidification chambers May. 22, 2012
7731841 Flow control systems and methods for artificial ponds Jun. 8, 2010
7694942 Swamp cooler filter Apr. 13, 2010
7581716 Aeration equipment Sep. 1, 2009
7566398 Water filtering device Jul. 28, 2009
7238320 Device for oxygenating blood in an extracorporeal circuit Jul. 3, 2007
6869065 Vapor cleaner Mar. 22, 2005
6852147 Apparatus and method for reduction of gases emitted from a cooling tower Feb. 8, 2005
6638428 Method of preventing formation of bubbles during filtration operations Oct. 28, 2003
6579449 Carbonated water supply system Jun. 17, 2003
6485613 Batch-continuous countercurrent mass transfer process Nov. 26, 2002
6439546 Carburetor with fuel vapor control Aug. 27, 2002
6386521 Basement water injection/evaporation system May. 14, 2002
6357725 Gas/liquid mixing device Mar. 19, 2002
6312597 Apparatus for delivering ultra-low particle counts in semiconductor manufacturing Nov. 6, 2001
6237896 Portable fan with misting nozzles May. 29, 2001
5957339 Water filtration system Sep. 28, 1999
5695651 Inlet screen Dec. 9, 1997
5601724 Method of aeration of liquids Feb. 11, 1997
5593469 Exhaust gas scrubber Jan. 14, 1997
5520854 Apparatus and method for preventing the accumulation of bacteria in a humidifier May. 28, 1996
5460731 Method of aeration of liquids Oct. 24, 1995
5431858 Energy conserving fluid flow distribution system with internal strainer aNd method of use for promoting uniform water distribution Jul. 11, 1995
5407604 Humidifier using a neubilizer Apr. 18, 1995
5254168 Coating apparatus having opposed atomizing nozzles in a fluid bed column Oct. 19, 1993
5232582 Water purifying apparatus having moss-preventing filter and monitored air injection Aug. 3, 1993
5156778 Mixing device Oct. 20, 1992
5120435 Pre-treatment sewer discharge system Jun. 9, 1992
5096578 Vortex breaker for horizontal liquid draw off tray sump Mar. 17, 1992
5071550 Appartus for cleaning and aeration of open bodies of water Dec. 10, 1991
4877531 Process for treating various refuse materials, particularly smoke, garbage and sewage Oct. 31, 1989
4847203 Fermentation vessels Jul. 11, 1989
4660741 Water purification system and method for a post-mix beverage dispenser Apr. 28, 1987
4578253 Methods of and apparatus for recovering a constituent of a process effluent Mar. 25, 1986
4375976 Method and apparatus for recovering particulate matter from gas stream Mar. 8, 1983
4373502 Fuel control system Feb. 15, 1983
4353846 Filter assembly for evaporative cooler pumps Oct. 12, 1982
4255360 Water aerator and method Mar. 10, 1981
4003835 Fittings Jan. 18, 1977
3994811 Protein skimmer and carbon filtration replaceable unit Nov. 30, 1976
3933638 Liquid fuel purification system Jan. 20, 1976











 
 
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