A62C 4/02
In gas-pipes
Official title: in gas-pipes (safety valves F16K17/00)
A62C4/02 (In gas-pipes) appears on 99 US grants and 96 published applications in this corpus.
Search patents in A62C- Granted patents
- 99
- Published applications
- 96
- Assignees
- 86
- Inventors
- 223
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 3 | 6 |
| 2007 | 3 | 2 |
| 2008 | 2 | 3 |
| 2009 | 0 | 2 |
| 2010 | 1 | 7 |
| 2011 | 3 | 0 |
| 2012 | 2 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 0 | 1 |
| 2016 | 3 | 10 |
| 2017 | 0 | 7 |
| 2018 | 5 | 12 |
| 2019 | 10 | 4 |
| 2020 | 2 | 3 |
| 2021 | 5 | 2 |
| 2022 | 3 | 4 |
| 2023 | 4 | 3 |
| 2024 | 3 | 7 |
| 2025 | 3 | 6 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flame arrester having deformation unit assembly29 Sep 2026US 12,746,420 B2China Petroleum & Chemical Corporation
- 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
- Heat exchange and flame arrest30 Dec 2025US 12,510,298 B2Hewlett-Packard Development Company, L. P.
- Flame trap25 Nov 2025US 12,478,814 B2Witt GmbH & Co. Holding und Handels-KG
- Flame arrestor device and method for flame arrestment27 Nov 2025US 2025/0360346 A1Bnr-Capital B.V.
- Quenching device, hydrogen production device, hydrogen production method and reactor for photochemical reaction11 Sep 2025US 2025/0281781 A1Japan Technological Research Association of Artificial Photosynthetic Chemical Process
- Gas furnace with flame arrestor7 Aug 2025US 2025/0249300 A1Daikin Comfort Technologies Manufacturing, L.P.
- Flame arrestor screw19 Jun 2025US 2025/0195926 A1Woodward, Inc.
- Mechanical Indicator for Flame Arrestor and Method5 Jun 2025US 2025/0180425 A1Emerson Automation Solutions Final Control UK Ltd
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 arrestor apparatus45US 5,415,233 AChem-Mech · 1995
- Overtemperature shut-off valve with sealing spring for automatically shutting off conduits37US 5,477,877 AMertik Maxitrol GmbH & Co. KG · 1995
- Flash back arrestor25US 3,933,444 AEmerson Electric Co. · 1976