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Class Information
Number: 4/322
Name: Baths, closets, sinks, and spittoons > Flush closet > With holding tank > And heater
Description: Subject matter including means for introducing heat to the tank for the purpose of warning, preventing freezing and/or sterilizing the contents of the tank.

Patents under this class:

Patent Number Title Of Patent Date Issued
8104108 Waterless toilet Jan. 31, 2012
7449107 Dehydration toilet having an infusion odor capturing steam and water recovery system Nov. 11, 2008
7203976 Floor level waste pumping system for toilets Apr. 17, 2007
6470505 Water efficient toilet Oct. 29, 2002
6412121 Thermo-evaporation type toilet system Jul. 2, 2002
6247191 Locomotive sanitation apparatus and method of protecting the same from freezing Jun. 19, 2001
6038710 Sewage removal system Mar. 21, 2000
5891330 Waste treatment system Apr. 6, 1999
5698095 Method and apparatus for human waste treatment Dec. 16, 1997
5433842 Marine sewage treatment system Jul. 18, 1995
4870252 Condensation controller Sep. 26, 1989
4391002 Water-closet for vehicles, particularly motor coaches Jul. 5, 1983
4359789 Sewerless disposal system Nov. 23, 1982
4342568 Refuse disposal apparatus Aug. 3, 1982
4115879 Water recirculation system Sep. 26, 1978
4107795 Self-contained comfort station Aug. 22, 1978

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