E21F 11/00
Rescue devices or other safety devices
Official title: Rescue devices or other safety devices, e.g. safety chambers or escape ways (breathing aids for curative purposes A61H31/00; respiratory apparatus A62B7/00; breathing apparatus for accidentally buried persons A62B33/00)
E21F11/00 (Rescue devices or other safety devices) appears on 63 US grants and 72 published applications in this corpus.
Search patents in E21F- Granted patents
- 63
- Published applications
- 72
- Assignees
- 60
- Inventors
- 191
- Latest grant
- 25 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 4 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 5 |
| 2011 | 0 | 5 |
| 2012 | 2 | 6 |
| 2013 | 3 | 3 |
| 2014 | 6 | 9 |
| 2015 | 4 | 4 |
| 2016 | 2 | 5 |
| 2017 | 7 | 4 |
| 2018 | 1 | 2 |
| 2019 | 2 | 3 |
| 2020 | 2 | 4 |
| 2021 | 3 | 3 |
| 2022 | 2 | 1 |
| 2023 | 2 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Underwater robot for mine flooding rescue25 Feb 2025US 12,234,730 B2Anhui University of Science and Technology
- Safety plug1 Oct 2024US 12,104,450 B2Rattlejack Innovations Pty. Ltd.
- Refuge shelter, coupling and method27 Aug 2024US 12,071,852 B2Strata Products Worldwide, LLC
- Fabricated ocean tunnel structure with escape device and application method thereof19 Mar 2024US 11,933,176 B2Shandong University
- Protecting trolley and construction method of rock burst prewarning protection system in non-contact tunnel construction5 Mar 2024US 11,920,474 B2China Railway 16Th Bureau Group Beijing Jiangong Machinery Co., Ltd.
- Modular Mining Escapeway9 Jul 2026US 2026/0193986 A1RAM Enterprise, Inc.
- Double-end chain tension force control system for cross side-dumping type flight conveyor and control method therefor16 Apr 2026US 2026/0103984 A1Taiyuan University of Technology
- Directional indicator device11 Sep 2025US 2025/0283409 A1
- Refuge Shelter, Coupling and Method12 Dec 2024US 2024/0410281 A1Strata Products Worldwide, LLC
- Underwater robot for mine flooding rescue30 May 2024US 2024/0175361 A1Anhui University of Science and Technology
Most cited
By later US patents
- Location system67US 5,438,321 A1995
- Safety system and method of a tunnel structure36US 7,673,629 B2Rescue Air Systems, Inc. · 2010
- Life support system for drilling rigs35US 4,165,738 A1979
- Inflatable portable refuge structure23US 5,537,784 A1996
- Safety system and method of an underground mine17US 8,381,726 B2Rescue Air Systems, Inc. · 2013