F23N 2241/12
Stack-torches
F23N2241/12 (Stack-torches) appears on 18 US grants and 18 published applications in this corpus.
Search patents in F23N- Granted patents
- 18
- Published applications
- 18
- Assignees
- 15
- Inventors
- 58
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 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 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 5 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Monitoring and maintaining flare tip temperatures4 Aug 2026US 12,698,896 B2Saudi Arabian Oil Company
- Vent gas recovery with flare control during a flare event2 Dec 2025US 12,486,980 B2Chevron Phillips Chemical Company LP
- Integrated flare combustion control20 May 2025US 12,305,853 B2Baker Hughes Holdings LLC
- Emission monitoring of flare systems23 Jul 2024US 12,044,641 B2Baker Hughes Oilfield Operations LLC
- Apparatus for monitoring level of assist gas to industrial flare20 Feb 2024US 11,906,161 B2
- Determining hydrocarbon effluent combustion efficiency8 Jan 2026US 2026/0009727 A1Schlumberger Technology Corporation
- Exhaust gas composition characterization in combustion systems16 Oct 2025US 2025/0321003 A1Clean Connect AI, Inc.
- Vent gas recovery with flare control during a flare event29 Feb 2024US 2024/0068661 A1Chevron Phillips Chemical Company LP
- Monitoring and maintaining flare tip temperatures11 Jan 2024US 2024/0011632 A1Saudi Arabian Oil Company
- Systems and Methods for Calculating Carbon Emission Reductions30 Mar 2023US 2023/0096607 A1Mesa Natural Gas Solutions, LLC
Most cited
By later US patents
- Flare characterization and control system20US 8,138,927 B2Honeywell International Inc. · 2012
- Flare monitoring apparatus19US 4,233,596 AShowa Yuka Kabushiki Kaisha · 1980
- Apparatus for supplying alternate gases to steam injection means on a flare stack13US 4,227,872 AJohn Zink Company · 1980
- Modular flare stack and method of flaring waste gas13US 8,282,389 B2NV Bekaert SA · 2012
- Real-time burner efficiency control and monitoring10US 10,041,672 B2Schlumberger Technology Corporation · 2018