A61H 33/02
Bathing devices for use with gas-containing liquid, or liquid in which gas
Official title: Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths {(A61H33/6026 takes precedence)}
A61H33/02 (Bathing devices for use with gas-containing liquid, or liquid in which gas) appears on 643 US grants and 483 published applications in this corpus.
Search patents in A61H- Granted patents
- 643
- Published applications
- 483
- Assignees
- 266
- Inventors
- 873
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 8 | 0 |
| 1980 | 9 | 0 |
| 1981 | 14 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 8 | 0 |
| 1985 | 13 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 17 | 0 |
| 1990 | 20 | 0 |
| 1991 | 22 | 0 |
| 1992 | 15 | 0 |
| 1993 | 17 | 0 |
| 1994 | 14 | 0 |
| 1995 | 13 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 15 | 3 |
| 2002 | 19 | 14 |
| 2003 | 12 | 17 |
| 2004 | 15 | 26 |
| 2005 | 11 | 32 |
| 2006 | 15 | 35 |
| 2007 | 8 | 25 |
| 2008 | 13 | 31 |
| 2009 | 9 | 19 |
| 2010 | 14 | 14 |
| 2011 | 9 | 11 |
| 2012 | 12 | 29 |
| 2013 | 12 | 17 |
| 2014 | 17 | 23 |
| 2015 | 19 | 17 |
| 2016 | 15 | 19 |
| 2017 | 16 | 15 |
| 2018 | 15 | 5 |
| 2019 | 11 | 16 |
| 2020 | 17 | 18 |
| 2021 | 15 | 19 |
| 2022 | 11 | 16 |
| 2023 | 8 | 19 |
| 2024 | 11 | 18 |
| 2025 | 16 | 15 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61H 33/027Gas-water mixing nozzles therefor223
- A61H 33/028Means for producing a flow of gas69
- A61H 2033/023With means in the air supply lines to prevent back-feed of waterIndexing code58
- A61H 33/025Aerating mats or frames58
- A61H 2033/022With control means for regulating the air volume aspirated by a waterIndexing code52
- A61H 33/026Gas nozzles specially adapted therefor34
- A61H 2033/021Nozzles having flow-regulation meansIndexing code16
Recent patents
- Coupling device for securing a gas discharge apparatus inside a gas delivery conduit of a fluid impermeable liner covering a liquid-receiving basin26 May 2026US 12,636,225 B2Contego Spa Designs, Inc.
- Pulse wall nozzle for bathtub19 May 2026US 12,629,316 B2Guangzhou Rising Dragon Recreation Industrial Co., Ltd.
- Methods and apparatus for a nitric oxide repletion system28 Apr 2026US 12,611,362 B2
- Multidirectional hydrotherapy tub coplanar flow10 Mar 2026US 12,569,400 B2Saratoga Spa & Bath Co., Inc.
- Spa jet with crosswise and tangent venturi for both spa walls and spa floors17 Feb 2026US 12,551,401 B1
- A spa air pump with inflating function and a spa swimming pool10 Sep 2026US 2026/0263320 A1Intex Marketing Ltd.
- A nozzle assembly for a spa pool and a spa pool27 Aug 2026US 2026/0248684 A1Intex Marketing Ltd.
- Multidirectional hydrotherapy tub coplanar flow16 Jul 2026US 2026/0199186 A1Saratoga Spa & Bath Co., Inc.
- Massage pool2 Jul 2026US 2026/0183187 A1Bestway Inflatables & Material Corp.
- Hot and cold tub assemblies with peltier temperature controlsystems25 Jun 2026US 2026/0174631 A1Bi-Polar Holding Company LLC
Most cited
By later US patents
- Portable thermo-hydraulic physiotherapy device219US 4,149,529 AJobst Institute, Inc. · 1979
- Air-foam generating apparatus for bath155US 4,004,302 A1977
- User-selectable multi-jet assembly for jetted baths/spas127US 5,862,543 AVico Products Manufacturing Co., Inc. · 1999
- Spa construction and isolated controls therefor117US 4,233,694 AJacuzzi Whirlpool Bath, Inc. · 1980
- Low noise air blower113US 5,567,127 A1996