F22G 7/12
In flues
Official title: in flues
F22G7/12 (In flues) appears on 11 US grants and 16 published applications in this corpus.
Search patents in F22G- Granted patents
- 11
- Published applications
- 16
- Assignees
- 18
- Inventors
- 41
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 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 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Integrated steam generator and superheater with process gas in ammonia synloop15 Jul 2025US 12,358,803 B2Kellogg Brown & Root LLC
- Control of power generation system with water level calibration for pressure vessel28 Dec 2021US 11,208,920 B2General Electric Company
- Heat recovery surfaces arrangement in a recovery boiler31 Aug 2021US 11,105,499 B2Andritz Inc.
- Systems and methods for generating superheated steam with variable flue gas for enhanced oil recovery5 May 2020US 10,641,481 B2Energy Analyst LLC
- Small supercritical once-thru steam generator26 Feb 2019US 10,215,399 B2The Babcock & Wilcox Company
- Gas-fired steam-injection boiler for oil field24 Oct 2024US 2024/0353095 A1China Petroleum & Chemical Corporation
- Integrated Steam Generator and Superheater with Process Gas in Ammonia Synloop3 Mar 2022US 2022/0064013 A1Kollogg Brown & Root LLC
- Control of power generation system with water level calibration for pressure vessel10 Dec 2020US 2020/0386121 A1General Electric Company
- Heat exchanger having enhanced corrosion resistance24 Jan 2019US 2019/0024990 A1Babcock & Wilcox Vølund A/S
- Heat recovery surfaces arrangement in a recovery boiler1 Nov 2018US 2018/0313531 A1Andritz Inc.
Most cited
By later US patents
- Multi-section heat exchanger means7US 4,034,717 AHeater Technology, Inc. · 1977
- Small supercritical once-thru steam generator1US 10,215,399 B2The Babcock & Wilcox Company · 2019
- Heat exchanger having a counterflow evaporator1US 7,882,809 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 2011
- Arrangement structure suitable for inverted pulverized coal boiler with ultra-high steam temperature steam parameters1US 9,488,370 B2Huaneng Clean Energy Research Institute · 2016