A61M 16/22
Carbon dioxide-absorbing devices
Official title: Carbon dioxide-absorbing devices {; Other means for removing carbon dioxide}(cartridges with absorbing substances for respiratory apparatus A62B19/00)
A61M16/22 (Carbon dioxide-absorbing devices) appears on 466 US grants and 560 published applications in this corpus.
Search patents in A61M- Granted patents
- 466
- Published applications
- 560
- Assignees
- 211
- Inventors
- 932
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 5 |
| 2002 | 7 | 8 |
| 2003 | 13 | 15 |
| 2004 | 8 | 11 |
| 2005 | 8 | 18 |
| 2006 | 9 | 19 |
| 2007 | 6 | 19 |
| 2008 | 9 | 27 |
| 2009 | 9 | 21 |
| 2010 | 16 | 17 |
| 2011 | 13 | 32 |
| 2012 | 15 | 20 |
| 2013 | 14 | 27 |
| 2014 | 23 | 19 |
| 2015 | 18 | 27 |
| 2016 | 13 | 28 |
| 2017 | 19 | 24 |
| 2018 | 12 | 31 |
| 2019 | 20 | 17 |
| 2020 | 24 | 29 |
| 2021 | 28 | 36 |
| 2022 | 18 | 18 |
| 2023 | 20 | 29 |
| 2024 | 16 | 23 |
| 2025 | 13 | 24 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for supporting blood gas exchange by ventilation and extracorporeal blood gas exchange and system operating according to the process18 Aug 2026US 12,708,733 B2Drägerwerk AG & Co. KGaA
- Absorption arrangement with a CO2 absorber and a water trap and process for filtering out CO218 Aug 2026US 12,708,734 B2Drägerwerk AG & Co. KGaA
- Supply device and process for supplying a patient-side coupling unit with a gas mixture11 Aug 2026US 12,702,783 B2Drägerwerk AG & Co. KGaA
- Regenerable carbon dioxide scrubber23 Jun 2026US 12,661,478 B2The Johns Hopkins University
- Coupling between drive and blower head2 Jun 2026US 12,642,927 B2Loewenstein Medical Technology S.A.
- Systems and methods for volatile anesthesia delivery8 Oct 2026US 2026/0306782 A1GE Precision Healthcare LLC
- Systems and methods for reducing co2 rebreathing from a positive airway pressure machine8 Oct 2026US 2026/0306783 A1
- Clamping valve assembly for a ventilator27 Aug 2026US 2026/0249034 A1The Children’s Hospital of Philadelphia
- Pressure controlled exhaust vent27 Aug 2026US 2026/0249036 A1Fisher & Paykel Healthcare Limited
- Device and method of producing hypoxic/hyperoxic/normoxic gas mixtures13 Aug 2026US 2026/0232943 A1Z+ Health Srl
Most cited
By later US patents
- Respiratory mask having gas washout vent and gas washout vent for respiratory mask682US 6,581,594 B1ResMed Limited · 2003
- Ergonomic and adjustable respiratory mask assembly with headgear assembly456US 6,907,882 B2ResMed Limited · 2005
- Nasal gas delivery system and method for use thereof352US 6,637,434 B22003
- Methods and apparatus for closed-circuit ventilation therapy316US 6,041,777 AAlliance Pharmaceutical Corp. · 2000
- Ventilation apparatus and anesthesia delivery system310US 6,131,571 AUniversity of Florida · 2000