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Class Information
Number: 4/538
Name: Baths, closets, sinks, and spittoons > Tubs
Description: Subject matter having an open receptacle large enough for most or a majority of a user"s body to be received therein for the purpose of washing or bathing the user.










Sub-classes under this class:

Class Number Class Name Patents
4/546 Combined with diverse means 76
4/559 Convenience accessories 213
4/541.1 Means for agitating or circulating water in a tub 300
4/584 Particular construction or configuration details 158
4/539 Plural tubs (i.e., all for bathing) 9
4/545 With heating of tub structure 46
4/540 With means for turning tub for aiding access 23
4/557 With movable closure 70
4/555 With user access means in side of the tub 59


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8671471 Bath Mar. 18, 2014
8566972 Liquid aroma injector Oct. 29, 2013
8549678 Accelerated tub drain Oct. 8, 2013
8505128 Removable closure for a bathtub having a walk-through Aug. 13, 2013
8230568 Bathtub accessory device and method Jul. 31, 2012
8065757 Bath Nov. 29, 2011
7691481 Composite article Apr. 6, 2010
7610634 Bathtub device Nov. 3, 2009
7490369 Illuminated bathtub and support system Feb. 17, 2009
7488416 Bathing pool assembly with water full of nano-scale ozone bubbles for rehabilitation Feb. 10, 2009
7448095 Time tub Nov. 11, 2008
7258783 Fluid delivery system for a water tub using a removeable chemical carrier Aug. 21, 2007
6948287 Gap seal on a building structure Sep. 27, 2005
6922856 Safety bathtub Aug. 2, 2005
6895609 One piece mold for a multi-piece tub and shower surround May. 24, 2005
6857139 Tactile therapy system for spas Feb. 22, 2005
6775861 Transportable hydrotherapy equipment for a child Aug. 17, 2004
6601247 Light transmitting type bathtub Aug. 5, 2003
6547635 Doll bath Apr. 15, 2003
6418573 Bathing method and bathing apparatus Jul. 16, 2002
6378145 Combined bath tub/shower tub device Apr. 30, 2002
6308349 Sanitary tub Oct. 30, 2001
6158065 Baby bath tub Dec. 12, 2000
6120903 Multilayered, flat shaped part with a visible side and a support layer Sep. 19, 2000
5960489 Support system for bath or shower tubs Oct. 5, 1999
5924146 Bathtub on bed for immobile patients Jul. 20, 1999
5903934 Sanitary fixtures for use with a mobile patient lift May. 18, 1999
5890241 Method and means for installing overflow outlets to bathtubs and the like Apr. 6, 1999
5819333 Portable, inflatable, one-person vessel for recumbent, weightless, therapeutic flotation Oct. 13, 1998
5778463 Multi-piece tub/shower unit and method of installation Jul. 14, 1998
5700566 Heat resistant composite laminate Dec. 23, 1997
5678256 Bathtub step assembly for use in bathing disabled persons Oct. 21, 1997
5661462 Bath overflow alarm Aug. 26, 1997
5580621 Polyester backed acrylic composite molded structure and method of manufacturing thereof Dec. 3, 1996
5560092 Method of renovating baths Oct. 1, 1996
5527412 Spa apparatus Jun. 18, 1996
5494718 Rigidizer for plastic vessels Feb. 27, 1996
5418048 Crosslinked acrylic sheet with enhanced vacuum molding attributes May. 23, 1995
5333324 Hydrotherapy hot tub structure for neck and shoulder massage Aug. 2, 1994
5247712 Inflatable bathing device Sep. 28, 1993
5230108 Molded articles Jul. 27, 1993
5159723 Bathtub Nov. 3, 1992
5067481 Control device for an air-bubble massage appliance Nov. 26, 1991
5038420 Bathing apparatus having automatic control means Aug. 13, 1991
5001787 Combination bathtub/shower facility Mar. 26, 1991
4964183 Tanning tub Oct. 23, 1990
4868934 Self-cleaning bathtub Sep. 26, 1989
4844944 Lightweight, durable plumbing fixture fabricated from a delamination-resistant multilayer polymeric composite Jul. 4, 1989
4761838 Contrast-healing water spa system Aug. 9, 1988
D295668 Covered well for bathtubs May. 10, 1988

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