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Class Information
Number: 4/347
Name: Baths, closets, sinks, and spittoons > Flush closet > Ventilated, i.e., noxious fume removal
Description: Subject matter including means for removing gases having disagreeable odor.










Sub-classes under this class:

Class Number Class Name Patents
4/348 Bowl 25


Patents under this class:

Patent Number Title Of Patent Date Issued
8424121 Odour extraction device for a toilet pan Apr. 23, 2013
8286272 Toilet seat and toilet equipped therewith Oct. 16, 2012
8196232 Exhaust unit for a toilet bowl Jun. 12, 2012
7730560 Odorless toilet Jun. 8, 2010
6772449 Toilet ventilation system Aug. 10, 2004
6760928 System and method for controlling toilet odors Jul. 13, 2004
6749805 Foul air eliminator Jun. 15, 2004
6735790 Vent stack screen for portable toilet holding tanks May. 18, 2004
6694534 Toilet ventilation system Feb. 24, 2004
6678900 Bowl ventilation apparatus with proximity sensor Jan. 20, 2004
6643850 Odor removal system Nov. 11, 2003
6550072 Bowl ventilation apparatus Apr. 22, 2003
6351855 Bathroom odor withdrawal system Mar. 5, 2002
6295656 Venting apparatus for flush toilets Oct. 2, 2001
6247191 Locomotive sanitation apparatus and method of protecting the same from freezing Jun. 19, 2001
6202226 Portable waste odor collection apparatus Mar. 20, 2001
5555572 Toilet bowl ventilating and deodorizing apparatus Sep. 17, 1996
5539937 Lid integrated deodorizer for toilets Jul. 30, 1996
5488741 Toilet bowl ventilating and deodorizing apparatus Feb. 6, 1996
5369812 Toilet ventilation assembly including fluid extraction device Dec. 6, 1994
5305472 Ventilation unit for a toilet Apr. 26, 1994
5259072 Toilet ventilation assembly including fluid extraction device Nov. 9, 1993
5231705 Method and apparatus for eliminating toilet odors Aug. 3, 1993
5123124 Automatic, self-cleaning, water saving, toilet system Jun. 23, 1992
5016294 Odorless toilet May. 21, 1991
4984310 Lavatory pan seat Jan. 15, 1991
4944045 Condition-specific toilet ventilation system Jul. 31, 1990
4933995 Flush-operated bathroom fan Jun. 19, 1990
4922557 Outdoor toilet holding tank ventilation system May. 8, 1990
4894872 Waterless sanitation system with ventilation Jan. 23, 1990
4726078 Toilet ventilation system Feb. 23, 1988
4385912 Apparatus for extracting liquid and foam from gas May. 31, 1983
4313234 Toilet Feb. 2, 1982
4254515 Compost-type toilet equipment Mar. 10, 1981
4196477 Evaporative toilet Apr. 8, 1980
4170798 Apparatus for homogenizing and handling biowaste and other materials in isolation Oct. 16, 1979
4153956 Toilet deodorizer device May. 15, 1979
4145773 Portable toilet with vent means for the holding tank Mar. 27, 1979
4031574 Timed ventilator for toilets Jun. 28, 1977
4017916 Toilet ventilator including motion-responsive electrical transducer Apr. 19, 1977











 
 
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