A61H 33/6021
Nozzles
Official title: {Nozzles}
A61H33/6021 (Nozzles) appears on 595 US grants and 465 published applications in this corpus.
Search patents in A61H- Granted patents
- 595
- Published applications
- 465
- Assignees
- 235
- Inventors
- 864
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 13 | 0 |
| 1990 | 17 | 0 |
| 1991 | 22 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 14 | 0 |
| 1999 | 22 | 0 |
| 2000 | 13 | 0 |
| 2001 | 18 | 2 |
| 2002 | 22 | 11 |
| 2003 | 13 | 15 |
| 2004 | 17 | 21 |
| 2005 | 13 | 32 |
| 2006 | 13 | 28 |
| 2007 | 6 | 27 |
| 2008 | 4 | 24 |
| 2009 | 4 | 26 |
| 2010 | 10 | 15 |
| 2011 | 10 | 15 |
| 2012 | 17 | 20 |
| 2013 | 13 | 16 |
| 2014 | 12 | 13 |
| 2015 | 16 | 15 |
| 2016 | 15 | 14 |
| 2017 | 15 | 16 |
| 2018 | 15 | 14 |
| 2019 | 19 | 19 |
| 2020 | 17 | 25 |
| 2021 | 16 | 23 |
| 2022 | 12 | 13 |
| 2023 | 12 | 17 |
| 2024 | 10 | 13 |
| 2025 | 20 | 20 |
| 2026 | 11 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61H 33/6063Specifically adapted for fitting in bathtub walls321
- A61H 33/6052Having flow regulating means141
- A61H 33/6036Hand-held connected to a supply hose78
- A61H 33/6047With incorporated pump means65
- A61H 33/6057Comprising means producing pulsating or intermittent streams61
- A61H 33/6026Nozzles in the bathtub connected to an outside pump circuit without modification49
- A61H 33/6042Used also as outlet14
- A61H 33/6031Extendible or retractable9
Recent patents
- Massage nozzle for hot tub6 Oct 2026US 12,751,896 B2Guangzhou Rising Dragon Recreation Industrial Co., Ltd.
- Multi-stage fluidic oscillator with variable frequency assembly and method2 Jun 2026US 12,643,114 B2Abc Technologies 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
- Swim spa jet propulsion systems and methods28 Apr 2026US 12,611,583 B2Bullfrog International, LC
- A nozzle assembly for a spa pool and a spa pool27 Aug 2026US 2026/0248684 A1Intex Marketing Ltd.
- Dry massage apparatus13 Aug 2026US 2026/0232522 A1Jk-Holding GmbH
- Sauna Room30 Jul 2026US 2026/0215998 A1Spa Garage Co. 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.
Most cited
By later US patents
- Integral light and liquid circulation fitting156US 5,207,499 AKDI American Products, Inc. · 1993
- User-selectable multi-jet assembly for jetted baths/spas127US 5,862,543 AVico Products Manufacturing Co., Inc. · 1999
- Portable spa123US 6,003,166 AICON Health & Fitness, Inc. · 1999
- Fluidic nozzle with multiple operating modes120US 6,497,375 B1Bowles Fluidics Corporation · 2002
- Liquid sensor and touch control for hydrotherapy baths107US 4,716,605 A1988