A62C 4/00
Flame traps allowing passage of gas but not of flame or explosion
Official title: Flame traps allowing passage of gas but not of flame or explosion wave
A62C4/00 (Flame traps allowing passage of gas but not of flame or explosion) appears on 218 US grants and 225 published applications in this corpus.
Search patents in A62C- Granted patents
- 218
- Published applications
- 225
- Assignees
- 161
- Inventors
- 475
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 3 |
| 2003 | 4 | 4 |
| 2004 | 3 | 6 |
| 2005 | 3 | 2 |
| 2006 | 4 | 8 |
| 2007 | 4 | 3 |
| 2008 | 2 | 4 |
| 2009 | 1 | 4 |
| 2010 | 1 | 10 |
| 2011 | 4 | 3 |
| 2012 | 3 | 7 |
| 2013 | 3 | 7 |
| 2014 | 4 | 7 |
| 2015 | 7 | 14 |
| 2016 | 11 | 20 |
| 2017 | 8 | 11 |
| 2018 | 8 | 20 |
| 2019 | 15 | 12 |
| 2020 | 9 | 14 |
| 2021 | 13 | 15 |
| 2022 | 10 | 10 |
| 2023 | 10 | 7 |
| 2024 | 11 | 16 |
| 2025 | 9 | 12 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flame arrester having deformation unit assembly29 Sep 2026US 12,746,420 B2China Petroleum & Chemical Corporation
- Mechanical indicator for flame arrestor and method29 Sep 2026US 12,748,007 B2Emerson Process Management Regulator Technologies Tulsa, LLC
- Flame arresters and end housings for flame arresters25 Aug 2026US 12,714,895 B2Emerson Process Management Regulator Technologies, Inc.
- Flame arrester28 Jul 2026US 12,691,311 B2China Petroleum & Chemical Corporation
- Retractable spout closure system with flame mitigation17 Feb 2026US 12,551,738 B2Rieke Corporation
- Flame mitigation device for fuel container27 Aug 2026US 2026/0249115 A1Scepter US Holding Company
- Retractable spout closure system with flame mitigation25 Jun 2026US 2026/0175059 A1Rieke Corporation
- Container and closure systems with flame mitigation9 Apr 2026US 2026/0097885 A1Rieke Corporation
- Control panel and method for spark and explosion protection control2 Apr 2026US 2026/0094514 A1Iep Technologies, LLC
- Flame mitigation device for fuel container29 Jan 2026US 2026/0027395 A1Scepter US Holding Company
Most cited
By later US patents
- Detonation flame arrestor including a spiral wound wedge wire screen for gases having a low MESG106US 6,699,035 B2Enardo, Inc. · 2004
- Spark arresting module95US 4,307,673 AForest Fuels, Inc. · 1981
- Flame arresting and explosion attenuating system74US 4,013,190 AMcDonnell Douglas Corporation · 1977
- Flame arrester having detonation-attenuating means53US 4,909,730 AWestech Industrial Ltd. · 1990
- Flame arrestor apparatus45US 5,415,233 AChem-Mech · 1995