F22B 37/22
Drums
Official title: Drums; Headers; Accessories therefor
F22B37/22 (Drums) appears on 164 US grants and 69 published applications in this corpus.
Search patents in F22B- Granted patents
- 164
- Published applications
- 69
- Assignees
- 89
- Inventors
- 313
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 15 | 0 |
| 1988 | 11 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 5 |
| 2010 | 0 | 4 |
| 2011 | 1 | 5 |
| 2012 | 2 | 5 |
| 2013 | 3 | 7 |
| 2014 | 4 | 4 |
| 2015 | 3 | 3 |
| 2016 | 4 | 1 |
| 2017 | 3 | 4 |
| 2018 | 2 | 3 |
| 2019 | 5 | 2 |
| 2020 | 4 | 5 |
| 2021 | 2 | 6 |
| 2022 | 5 | 3 |
| 2023 | 1 | 1 |
| 2024 | 4 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22B 37/221Covers for drums, collectors, manholes or the like64
- F22B 37/228Headers for distributing feedwater into steam generator vessels40
- F22B 37/227Drums and collectors for mixing18
- F22B 37/225Arrangements on drums or collectors for fixing tubes or for connecting collectors12
- F22B 37/226Protection of drums against combustion2
Recent patents
- Steam generator for fuel cell system27 Jan 2026US 12,535,208 B2Ceres Intellectual Property Company Limited
- System and method for top platform assembly of heat recovery steam generator (HRSG)27 May 2025US 12,313,255 B2GE Infrastructure Technology LLC
- Connection tube support of waste heat recovery boiler and waste heat recovery boiler including same29 Oct 2024US 12,130,010 B2Doosanenerbility Co., Ltd.
- Manway relief for a tank car10 Sep 2024US 12,084,095 B2Trinity Tank Car, Inc.
- Oval-shaped metal tank systems2 Jan 2024US 11,859,160 B2Spokane Stainless Technologies, Inc.
- On-demand rapid steam generator6 Aug 2026US 2026/0227061 A1OhmlQ, Inc.
- Solid electric thermal storage superheated steam output system1 May 2025US 2025/0137636 A1
- Tube sheet protection in a process gas waste heat boiler13 Feb 2025US 2025/0052414 A1Topsoe A/S
- Manway Relief for a Tank Car12 Dec 2024US 2024/0409132 A1Trinity Tank Car, Inc.
- Connection tube support of waste heat recovery boiler and waste heat recovery boiler including same30 May 2024US 2024/0175572 A1Doosan Enerbility Co., Ltd.
Most cited
By later US patents
- Dual seal nozzle dam and alignment means therefor55US 4,671,326 AWestinghouse Electric Corp. · 1987
- Steam distribution manifold44US 4,505,297 AShell California Production Inc. · 1985
- Nozzle dam translocating system36US 4,959,192 ATennesse Valley Authority · 1990
- Nozzle dam remote installation system and technique36US 5,042,861 ATennessee Valley Authority · 1991
- Nozzle dam remote installation system and technique34US 4,989,818 ATennessee Valley Authority · 1991