B64D 2231/00
Emergency oxygen systems
B64D2231/00 (Emergency oxygen systems) appears on 229 US grants and 270 published applications in this corpus.
Search patents in B64D- Granted patents
- 229
- Published applications
- 270
- Assignees
- 84
- Inventors
- 457
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 5 |
| 2003 | 2 | 6 |
| 2004 | 3 | 6 |
| 2005 | 3 | 8 |
| 2006 | 1 | 4 |
| 2007 | 4 | 6 |
| 2008 | 3 | 3 |
| 2009 | 2 | 8 |
| 2010 | 4 | 10 |
| 2011 | 1 | 5 |
| 2012 | 3 | 9 |
| 2013 | 8 | 20 |
| 2014 | 8 | 25 |
| 2015 | 10 | 14 |
| 2016 | 16 | 11 |
| 2017 | 14 | 20 |
| 2018 | 7 | 12 |
| 2019 | 17 | 20 |
| 2020 | 16 | 17 |
| 2021 | 4 | 10 |
| 2022 | 17 | 14 |
| 2023 | 12 | 16 |
| 2024 | 9 | 9 |
| 2025 | 12 | 9 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Smart pressure regulator for aircraft oxygen system22 Sep 2026US 12,743,114 B2B/E Aerospace, Inc.
- Aircraft overhead passenger service unit8 Sep 2026US 12,728,993 B2Goodrich Lighting Systems GmbH
- Oxygen mask for use in an aircraft, emergency oxygen system, and aircraft25 Aug 2026US 12,714,889 B2B/E Aerospace Systems GmbH
- Indicators for use in oxygen systems27 Jan 2026US 12,533,536 B2B/E Aerospace, Inc.
- Apparatus for supplying oxygen to a vehicle user, and vehicle comprising such an apparatus6 Jan 2026US 12,515,802 B2Safran Aerosystems
- Piezoelectric actuator controlled smart flow regulator for aircraft oxygen systems30 Apr 2026US 2026/0117884 A1B/E Aerospace, Inc.
- Mechanical restrictor-based oxygen initiator26 Feb 2026US 2026/0054103 A1B/E Aerospace, Inc.
- Aircraft oxygen supply system, and aircraft comprising such an aircraft oxygen supply system1 Jan 2026US 2026/0001659 A1B/E Aerospace Systems GmbH
- Oxygen Pressure Relief and Ventilation System and Method30 Oct 2025US 2025/0333177 A1Textron Aviation Inc.
- Oxygen Pressure Relief and Ventilation System and Method30 Oct 2025US 2025/0333178 A1Textron Aviation Inc.
Most cited
By later US patents
- Quick-donning full face oxygen mask with inflatable harness and soft foldable lens113US 5,664,566 APuritan-Bennett Corporation · 1997
- Compatible smoke and oxygen masks for use on aircraft79US 4,559,939 ALockheed Corporation · 1985
- System for monitoring pilot and/or passenger oxygen saturation levels and estimating oxygen usage requirements57US 7,246,620 B22007
- Passenger emergency oxygen mask drop zone extender50US 4,154,237 ABoeing Commercial Airplane Company · 1979
- Personal air cooling device50US 5,353,605 ACoolight Research & Development Ltd. · 1994