A62B 23/04
Filters for breathing-protection purposes: for gasproof shelters
Official title: for gasproof shelters
A62B23/04 (Filters for breathing-protection purposes: for gasproof shelters) appears on 18 US grants and 11 published applications in this corpus.
Search patents in A62B- Granted patents
- 18
- Published applications
- 11
- Assignees
- 12
- Inventors
- 30
- Latest grant
- 4 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular portable multi-crew life support system4 Feb 2025US 12,214,227 B2Hamilton Sundstrand Corporation
- NBC filtration systems26 Mar 2024US 11,938,351 B2Beth-El Zikhron Yaaqov Industries Ltd.
- Underground shelter with air-intake system26 Mar 2024US 11,939,792 B2Atlas Survival Shelters LLC
- Modular NBC filtration system for protection shelters12 Dec 2023US 11,839,778 B2Beth-El Zikhron Yaaqov Industries Ltd.
- Compact NBC filtration system for collective protection shelters15 Jun 2021US 11,033,761 B2Beth-El Zikhron Yaaqov Industries Ltd.
- Maskless respiratory, skin, and eye protection device for aerosols and vapors including chemical, biological, radiological, nuclear, and explosive (cbrne) contaminants30 Apr 2026US 2026/0115504 A1Patient Knowhow, Inc.
- Maskless respiratory, skin, and eye protection device for aerosols and vapors including chemical, biological, radiological, nuclear, and explosive (cbrne) contaminants16 Apr 2026US 2026/0102637 A1Patient Knowhow, Inc.
- Underground Shelter with Air-Intake System17 Oct 2024US 2024/0344347 A1Atlas Survival Shelters LLC
- Underground Shelter with Air-Intake System16 Feb 2023US 2023/0052761 A1Atlas Survival Shelters LLC
- Modular portable multi-crew life support system10 Feb 2022US 2022/0040505 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Deodorizing fitting for air filters32US 4,563,333 A1986
- Catalyst production process25US 8,900,420 B23M Innovative Properties Company · 2014
- Theta blast cell22US 5,115,613 ATheta Technologies, Inc. · 1992
- Air purifying filter systems for building air supply and respirators useful against NBC attacks15US 6,840,986 B1Koslow Technologies Corporation · 2005
- Cartridge ejector device for fluid compression system14US 5,215,658 AIngersoll-Rand Company · 1993