F22G 3/00
Steam superheaters characterised by constructional features
Official title: Steam superheaters characterised by constructional features; Details or component parts thereof
F22G3/00 (Steam superheaters characterised by constructional features) appears on 75 US grants and 83 published applications in this corpus.
Search patents in F22G- Granted patents
- 75
- Published applications
- 83
- Assignees
- 56
- Inventors
- 197
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 4 |
| 2008 | 1 | 5 |
| 2009 | 4 | 7 |
| 2010 | 2 | 4 |
| 2011 | 3 | 6 |
| 2012 | 5 | 2 |
| 2013 | 1 | 4 |
| 2014 | 5 | 4 |
| 2015 | 1 | 5 |
| 2016 | 3 | 4 |
| 2017 | 2 | 5 |
| 2018 | 4 | 3 |
| 2019 | 6 | 6 |
| 2020 | 6 | 4 |
| 2021 | 5 | 4 |
| 2022 | 4 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 2 |
| 2025 | 3 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22G 3/008Protection of superheater elements14
- F22G 3/006Steam superheaters with heating tubes12
- F22G 3/001Steam tube arrangements not dependent of location9
- F22G 3/005Annular steam tubes, i.e. the steam being heated between concentric tubes with5
- F22G 3/009Connecting or sealing of superheater or reheater tubes with collectors or distributors5
- F22G 3/003Superheater drain arrangements3
- F22G 3/007Headers3
- F22G 3/004Steam tubes with steam flowing in opposite directions in one pipe0
Recent patents
- Waste treatment system and waste treatment method4 Nov 2025US 12,459,018 B2Mitsubishi Heavy Industries, Ltd.
- Integrated steam generator and superheater with process gas in ammonia synloop15 Jul 2025US 12,358,803 B2Kellogg Brown & Root LLC
- Method, apparatus and system for enhanced oil and gas recovery with direct steam generation, multiphase close coupled heat exchanger system, super focused heat11 Feb 2025US 12,221,870 B2Heat IP Holdco, LLC
- High-pressure instant steam generator9 Apr 2024US 11,953,197 B2CleanNesta LLC
- Waste treatment system and waste treatment method12 Dec 2023US 11,839,909 B2Mitsubishi Heavy Industries, Ltd.
- Apparatus and process for producing a superheated steam2 Jul 2026US 2026/0185699 A1Uop LLC
- Superheated steam generator21 May 2026US 2026/0139828 A1Tokuden Co., Ltd.
- Superheated steam generator21 May 2026US 2026/0139829 A1Tokuden Co., Ltd.
- Steam generator and method24 Oct 2024US 2024/0353093 A1
- Waste treatment system and waste treatment method22 Feb 2024US 2024/0058850 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Steam cooker and related superheater35US 7,418,960 B2Premark FEG L.L.C. · 2008
- Method for upgrading a boiler16US 6,178,924 B2Kvaerner Pulping AB · 2001
- Module-based oxy-fuel boiler16US 7,516,620 B2Jupiter Oxygen Corporation · 2009
- Steam generator having a superheater tube bank13US 4,418,652 ASulzer Brothers Limited · 1983
- Heat recovery boiler and hot banking releasing method thereof12US 6,237,542 B1Kabushiki Kaisha Toshiba · 2001