A61M 16/208
Non-controlled one-way valves
Official title: {Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves}
A61M16/208 (Non-controlled one-way valves) appears on 2,008 US grants and 2,803 published applications in this corpus.
Search patents in A61M- Granted patents
- 2,008
- Published applications
- 2,803
- Assignees
- 899
- Inventors
- 3,910
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 12 | 0 |
| 1996 | 18 | 0 |
| 1997 | 25 | 0 |
| 1998 | 23 | 0 |
| 1999 | 18 | 0 |
| 2000 | 24 | 0 |
| 2001 | 9 | 6 |
| 2002 | 23 | 35 |
| 2003 | 33 | 39 |
| 2004 | 22 | 38 |
| 2005 | 18 | 45 |
| 2006 | 25 | 42 |
| 2007 | 28 | 57 |
| 2008 | 17 | 68 |
| 2009 | 13 | 72 |
| 2010 | 35 | 65 |
| 2011 | 44 | 94 |
| 2012 | 56 | 74 |
| 2013 | 69 | 107 |
| 2014 | 69 | 111 |
| 2015 | 73 | 139 |
| 2016 | 68 | 126 |
| 2017 | 83 | 143 |
| 2018 | 84 | 109 |
| 2019 | 104 | 125 |
| 2020 | 137 | 181 |
| 2021 | 136 | 245 |
| 2022 | 139 | 233 |
| 2023 | 130 | 216 |
| 2024 | 138 | 196 |
| 2025 | 140 | 147 |
| 2026 | 86 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aerosol spirometer and method of using same29 Sep 2026US 12,745,922 B2
- Respiratory ventilatory device and method of operating same29 Sep 2026US 12,746,356 B2Soco International LLC
- Mask, sample collecting tube, and pathogen collecting apparatus29 Sep 2026US 12,746,358 B2MGI Tech Co., Ltd.
- Variable flow vent assembly for a conduit mask29 Sep 2026US 12,746,362 B2ResMed Pty Ltd
- Apparatus and method for improved assisted ventilation22 Sep 2026US 12,741,110 B2CoLabs Medical, Inc.
- Device for supplying breating gas8 Oct 2026US 2026/0306770 A1Loewenstein Medical Technology S.A.
- Aerosol delivery device with completed dosage indicator24 Sep 2026US 2026/0284334 A1Trudell Medical International
- Inverted nozzle fixture and method17 Sep 2026US 2026/0273208 A1Invox Belgium NV
- Noise reduction box and ventilation therapy apparatus10 Sep 2026US 2026/0263713 A1Bmc (Dongguan) Medical Co., Ltd.
- Pressure controlled exhaust vent27 Aug 2026US 2026/0249036 A1Fisher & Paykel Healthcare Limited
Most cited
By later US patents
- Facial masks for assisted respiration or CPAP557US 5,560,354 AResCare Limited · 1996
- Nasal ventilation interface509US 6,478,026 B12002
- Assistive capnography device505US 10,532,174 B2Masimo Corporation · 2020
- Ventilation interface for sleep apnea therapy438US 6,595,215 B2InnoMed Technologies, Inc. · 2003
- Exhaust port assembly for a pressure support system436US 6,851,425 B2Respironics, Inc. · 2005