A62B 18/088
Devices for indicating filter saturation
Official title: {Devices for indicating filter saturation}
A62B18/088 (Devices for indicating filter saturation) appears on 85 US grants and 94 published applications in this corpus.
Search patents in A62B- Granted patents
- 85
- Published applications
- 94
- Assignees
- 49
- Inventors
- 225
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 3 |
| 2010 | 2 | 7 |
| 2011 | 3 | 3 |
| 2012 | 3 | 2 |
| 2013 | 2 | 10 |
| 2014 | 4 | 6 |
| 2015 | 5 | 3 |
| 2016 | 8 | 6 |
| 2017 | 2 | 4 |
| 2018 | 0 | 6 |
| 2019 | 3 | 7 |
| 2020 | 6 | 3 |
| 2021 | 4 | 4 |
| 2022 | 4 | 4 |
| 2023 | 4 | 11 |
| 2024 | 3 | 7 |
| 2025 | 2 | 3 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reusable head gear with replaceable microfilter assemblies powered air circulation, earthing and communication protocol8 Sep 2026US 12,728,300 B2
- Negative pressure reusable respirator system for safety event detection11 Aug 2026US 12,702,874 B23M Innovative Properties Company
- Digital change management system for respirator filter cartridges28 Apr 2026US 12,611,558 B23M Innovative Properties Company
- Custom-controllable powered respirator face mask21 Oct 2025US 12,447,361 B2Honeywell Safety Products USA, Inc.
- Monitoring system for mask device with alert messages and related methods22 Apr 2025US 12,280,275 B2
- Negative pressure reusable respirator system for safety event detection13 Aug 2026US 2026/0233034 A13M Innovative Properties Company
- Protective hood7 May 2026US 2026/0124476 A1Safran Aerosystems
- Operability indicator device9 Apr 2026US 2026/0097243 A1Safran Aerosystems
- Enhanced face masks for improved efficacy and usability8 Jan 2026US 2026/0007910 A1Amazon Technologies, Inc.
- Powered air breathing apparatus11 Sep 2025US 2025/0281776 A13M Innovative Properties Company
Most cited
By later US patents
- Exposure indicator with continuous alarm signal indicating multiple conditions111US 5,666,949 AMinnesota Mining and Manufacturing Company · 1997
- Respirator cartridge end-of-service lift indicator system and method of making61US 4,154,586 AAmerican Optical Corporation · 1979
- Respirator with inner half mask and pollutant indicator60US 5,297,544 ADragerwerk Aktiengesellschaft · 1994
- Exposure indicating apparatus60US 5,659,296 AMinnesota Mining and Manufacturing Company · 1997
- Multi-agent end-of-service-life indicator for respirator filters55US 7,442,237 B1The United States of America as represented by the Secretary of the Army · 2008