Resources Contact Us Home
Browse by Category: Main > Household
Class Information
Number: 4/209FF
Name: Baths, closets, sinks, and spittoons > Ventilation > With fluid filter

Patents under this class:

Patent Number Title Of Patent Date Issued
6681412 PTFE membrane filter for exhaust air of vacuum toilet system Jan. 27, 2004
6678900 Bowl ventilation apparatus with proximity sensor Jan. 20, 2004
6550072 Bowl ventilation apparatus Apr. 22, 2003
6519786 Toilet splash shield system Feb. 18, 2003
5806104 Toilet deodorizing device utilizing liquid deodorant Sep. 15, 1998
5560048 Water closet exhaust collector Oct. 1, 1996
5355537 Environmentally controlled portable toilet Oct. 18, 1994
5341521 Environmentally controlled standard toilet Aug. 30, 1994
5333321 Environmentally controlled commercial/public toilet Aug. 2, 1994
5210884 Environmentally controlled toilet May. 18, 1993
4991623 Automatic air valves for ducts Feb. 12, 1991
4974632 Automatic air valves for ducts Dec. 4, 1990
4726078 Toilet ventilation system Feb. 23, 1988
4630530 Filtering systems for buses Dec. 23, 1986
4608175 Integral waste disposal system Aug. 26, 1986
4025325 Portable ventilating air filtering device for toilets May. 24, 1977

  Recently Added Patents
Translation system adapted for query translation via a reranking framework
Method of forming solderable side-surface terminals of quad no-lead frame (QFN) integrated circuit packages
Switching device and electronic apparatus using the same
Bandpass filter and radio communication module and radio communication device using the same
Photon density wave based determination of physiological blood parameters
Identifying conceptually related terms in search query results
Superconducting magnetizer
  Randomly Featured Patents
Chrysanthemum plant named `Onyx Time Cream`
Performing an ordered search of different databases in response to receiving a search query and without receiving any additional user input
Printing method, printing apparatus, printing system, and storage medium
Power conversion system having prime mover start capability
1,7-substituted heptyn-2-ones and use
Method of creating an extremely thin semiconductor-on-insulator (ETSOI) layer having a uniform thickness
Electrophotographic toner and electrophotographic apparatus
Adjustable holder particularly useful for mounting magnetic heads
Optical table
Tractive effort control method and system for recovery from a wheel slip condition in a diesel-electric traction vehicle