A61M 2202/0283
Nitrous oxide
Official title: Nitrous oxide (N2O)
A61M2202/0283 (Nitrous oxide) appears on 222 US grants and 339 published applications in this corpus.
Search patents in A61M- Granted patents
- 222
- Published applications
- 339
- Assignees
- 129
- Inventors
- 523
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 14 |
| 2009 | 1 | 8 |
| 2010 | 2 | 10 |
| 2011 | 5 | 8 |
| 2012 | 9 | 18 |
| 2013 | 10 | 13 |
| 2014 | 13 | 27 |
| 2015 | 9 | 27 |
| 2016 | 17 | 15 |
| 2017 | 14 | 17 |
| 2018 | 12 | 16 |
| 2019 | 13 | 17 |
| 2020 | 22 | 26 |
| 2021 | 14 | 25 |
| 2022 | 18 | 16 |
| 2023 | 24 | 35 |
| 2024 | 11 | 22 |
| 2025 | 13 | 12 |
| 2026 | 10 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for delivery of psychedelic medications by inhalation and systems for performing the methods6 Oct 2026US 12,751,940 B2Cybin IRL Limited
- Catheters and systems for direct injection of gas-enriched liquid into a patient6 Oct 2026US 12,752,078 B2Zoll Circulation, Inc.
- Thermally controlled face engaging device25 Aug 2026US 12,714,596 B2EMBR Labs IP LLC
- Oxygen line verification for anesthesia gas flow controls23 Jun 2026US 12,661,475 B2Hu-Friedy Mfg.Co., Inc.
- Non-invasive ventilation via an air entrainment patient interface2 Jun 2026US 12,642,932 B2Koninklijke Philips N. V.
- Protective enclosure for an apparatus for delivering medical gas, such as NO30 Jul 2026US 2026/0216463 A1Inosystems
- Method and system for automatically detecting a clinically relevant leak2 Jul 2026US 2026/0182852 A1Qaelon Medical
- Simplified atomizer device11 Jun 2026US 2026/0158510 A1Advanced Medical Engineering, LLC
- Arrangement and process for artificial ventilation of a patient with reduced risk of condensation30 Apr 2026US 2026/0115406 A1Drägerwerk AG & Co. KGaA
- Manifolded anesthesia and ventilator system19 Mar 2026US 2026/0077143 A1GE Precision Healthcare LLC
Most cited
By later US patents
- Exhalation valve for mechanical ventilator201US 6,102,038 APulmonetic Systems, Inc. · 2000
- Gas delivery device and system108US 8,291,904 B2INO Therapeutics LLC · 2012
- Gas delivery device and system108US 8,573,209 B2INO Therapeutics LLC · 2013
- Nitric oxide delivery device103US 8,573,210 B2INO Therapeutics LLC · 2013
- Hand-operated cooling device for cryotherapy102US 9,398,975 B22016