A61M 16/009
Removing used or expired gases or anaesthetic vapours
Official title: {Removing used or expired gases or anaesthetic vapours (filtering, sterilising or disinfecting the exhaust air in drainage systems A61M1/784; bacterial filters in the expiratory path A61M16/1065)}
A61M16/009 (Removing used or expired gases or anaesthetic vapours) appears on 489 US grants and 616 published applications in this corpus.
Search patents in A61M- Granted patents
- 489
- Published applications
- 616
- Assignees
- 285
- Inventors
- 1,047
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 2 |
| 2002 | 7 | 7 |
| 2003 | 5 | 9 |
| 2004 | 9 | 9 |
| 2005 | 4 | 13 |
| 2006 | 5 | 12 |
| 2007 | 8 | 8 |
| 2008 | 5 | 13 |
| 2009 | 9 | 20 |
| 2010 | 8 | 24 |
| 2011 | 8 | 17 |
| 2012 | 16 | 17 |
| 2013 | 19 | 16 |
| 2014 | 18 | 32 |
| 2015 | 20 | 28 |
| 2016 | 11 | 13 |
| 2017 | 15 | 26 |
| 2018 | 12 | 18 |
| 2019 | 15 | 22 |
| 2020 | 31 | 36 |
| 2021 | 34 | 71 |
| 2022 | 33 | 64 |
| 2023 | 34 | 58 |
| 2024 | 27 | 45 |
| 2025 | 28 | 24 |
| 2026 | 16 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods of aerosol delivery with airflow regulation15 Sep 2026US 12,734,317 B2Altria Client Services LLC
- Face masks with internal nasal prongs and methods relating thereto18 Aug 2026US 12,708,730 B2
- Ventilator28 Jul 2026US 12,691,245 B2Westport Fuel Systems Canada Inc.
- Conversion of nitrogen dioxide (NO2) to nitric oxide (NO)14 Jul 2026US 12,679,729 B2VERO Biotech Inc.
- System and method for delivery of gas to a tissue26 May 2026US 12,636,445 B2Beyond Air, Inc.
- Device for supplying breating gas8 Oct 2026US 2026/0306770 A1Loewenstein Medical Technology S.A.
- Clamping valve assembly for a ventilator27 Aug 2026US 2026/0249034 A1The Children’s Hospital of Philadelphia
- Respiratory ventilatory device and method of operating same6 Aug 2026US 2026/0224835 A1Soco International LLC
- Breathing mask and methods thereof18 Jun 2026US 2026/0165874 A1
- A method of protecting turbine shaft bearings used in anaesthesia devices from contaminants in patient gases18 Jun 2026US 2026/0166247 A1Peninsula Medical Technologies Ltd
Most cited
By later US patents
- Method and apparatus for delivering aerosol to the airways and/or lungs of a patient398US 4,819,629 ASiemens Aktiengesellschaft · 1989
- Apparatus and method for respired gas collection and analysis389US 5,046,491 A1991
- Nasal gas delivery system and method for use thereof352US 6,637,434 B22003
- Ventilation apparatus and anesthesia delivery system310US 6,131,571 AUniversity of Florida · 2000
- Gas administration scavenging mask286US 4,248,218 A1981