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Class Information
Number: 4/317
Name: Baths, closets, sinks, and spittoons > Flush closet > With recirculating means
Description: Subject matter including means to pump a liquid in a closed system and means for filtering the waste material so that the liquid can be used for another flush.










Sub-classes under this class:

Class Number Class Name Patents
4/318 Including specified filtering means 32


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8079096 Self-contained, portable, non-mechanical waste disposal system Dec. 20, 2011
7449107 Dehydration toilet having an infusion odor capturing steam and water recovery system Nov. 11, 2008
7111332 Waterless urinals which can be flushed Sep. 26, 2006
7014778 Device and method for treating waste product Mar. 21, 2006
6766822 Method of water distribution and apparatus therefor Jul. 27, 2004
6523186 Toilet water recycling system Feb. 25, 2003
6519787 Toilet water recycling system Feb. 18, 2003
6496988 Compact recycling electric dehydration toilet Dec. 24, 2002
6412121 Thermo-evaporation type toilet system Jul. 2, 2002
6178566 Transportable waste collection and treatment toilet system Jan. 30, 2001
6143185 Treatment system for aircraft toilet waste water Nov. 7, 2000
6081935 Technologically advanced portable toilet and method of supplying purifying agent thereto Jul. 4, 2000
6066293 Method using 5-chloro-2-(2,4-dichlorophenoxy)phenol for deodorizing toilets May. 23, 2000
5913610 Portable flush toilet and enclosure Jun. 22, 1999
5711038 Toilet system Jan. 27, 1998
5080797 Method of disposing of fecal matter from toilet systems in fast moving vehicles Jan. 14, 1992
5035011 Self draining sanitation system Jul. 30, 1991
4947491 Pump Aug. 14, 1990
4734943 Waste disposal system Apr. 5, 1988
4713847 Vacuum toilet system Dec. 22, 1987
4615810 Method for treating human waste by solidification Oct. 7, 1986
4547917 Water closet system having a liquid separator Oct. 22, 1985
4519103 Self-contained sewage waste disposal system May. 28, 1985
4454613 Self-contained, compact towable facility having maximized balanced water storage, drain water collection and waste water isolation systems Jun. 19, 1984
4433443 Self-contained flow through sewage waste disposal system Feb. 28, 1984
4393524 Self-contained sewage waste disposal system Jul. 19, 1983
4332040 Self-contained, compact towable facility having maximized balanced water storage drain water collection and waste water isolation systems Jun. 1, 1982
4313233 Waterless flush toilet system Feb. 2, 1982
4222130 Waterless flush toilet system Sep. 16, 1980
4202061 Lavatory wastewater disposal system for aircraft May. 13, 1980
4170797 Apparatus for treating waste matter Oct. 16, 1979
4162549 Filtering elements Jul. 31, 1979
4117560 Apparatus for treating fluids and treating tablets therefor Oct. 3, 1978
4115876 Self-contained recirculating toilet system Sep. 26, 1978
4114203 Water closet tank drain valve Sep. 19, 1978
4083067 Recirculating toilet and method Apr. 11, 1978
4063315 Vacuum toilet system Dec. 20, 1977
4050102 Recirculating toilet system Sep. 27, 1977
4044406 Compact portable self-contained aerobic digestion toilet Aug. 30, 1977
4028747 Oil toilet Jun. 14, 1977
4017395 Recirculating sewerage system Apr. 12, 1977
3995328 Vacuum toilet system Dec. 7, 1976
3995327 Water saving toilet arrangement Dec. 7, 1976
3992727 Portable toilet Nov. 23, 1976
3974528 Sewage system with reusable flush medium Aug. 17, 1976
3958279 Recirculating sewerage system May. 25, 1976
3956776 Liquid waste material conveying system for toilets and the like May. 18, 1976
3951796 Oil recirculating toilets Apr. 20, 1976
3939501 Toilet Feb. 24, 1976
3939499 Recirculating electrolytic toilet Feb. 24, 1976

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