F22B 37/10
Water tubes
Official title: Water tubes; Accessories therefor
F22B37/10 (Water tubes) appears on 541 US grants and 362 published applications in this corpus.
Search patents in F22B- Granted patents
- 541
- Published applications
- 362
- Assignees
- 268
- Inventors
- 1,197
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 11 | 0 |
| 1984 | 15 | 0 |
| 1985 | 14 | 0 |
| 1986 | 12 | 0 |
| 1987 | 24 | 0 |
| 1988 | 22 | 0 |
| 1989 | 12 | 0 |
| 1990 | 10 | 0 |
| 1991 | 11 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 12 | 0 |
| 1997 | 8 | 0 |
| 1998 | 17 | 0 |
| 1999 | 7 | 0 |
| 2000 | 15 | 0 |
| 2001 | 11 | 0 |
| 2002 | 6 | 1 |
| 2003 | 1 | 7 |
| 2004 | 5 | 5 |
| 2005 | 5 | 6 |
| 2006 | 5 | 9 |
| 2007 | 6 | 13 |
| 2008 | 4 | 14 |
| 2009 | 4 | 17 |
| 2010 | 9 | 25 |
| 2011 | 7 | 22 |
| 2012 | 11 | 20 |
| 2013 | 15 | 24 |
| 2014 | 10 | 19 |
| 2015 | 15 | 27 |
| 2016 | 14 | 22 |
| 2017 | 14 | 15 |
| 2018 | 16 | 20 |
| 2019 | 20 | 25 |
| 2020 | 19 | 18 |
| 2021 | 21 | 19 |
| 2022 | 14 | 7 |
| 2023 | 12 | 7 |
| 2024 | 11 | 12 |
| 2025 | 4 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22B 37/20Supporting arrangements211
- F22B 37/107Protection of water tubes96
- F22B 37/14Supply mains68
- F22B 37/101Tubes having fins or ribs64
- F22B 37/104Connection of tubes one with the other or with collectors, drums or38
- F22B 37/12Forms of water tubes38
- F22B 37/18Inserts19
- F22B 37/105Penetrations of tubes through a wall and their sealing8
All 10 subgroupsShow fewer
Recent patents
- Collecting apparatus, condensation equipment, and collecting method10 Feb 2026US 12,546,537 B2Mitsubishi Heavy Industries, Ltd.
- Method and apparatus for improving steam oxidation resistance of small diameter boiler tube in coal-fired boiler3 Feb 2026US 12,540,729 B2Xi'an Thermal Power Research Institute Co., Ltd.
- Heat pipe unit and waste heat recovery boiler including same23 Sep 2025US 12,422,193 B2Doosan Enerbility Co., Ltd.
- Arrangement for a method of supporting a side wall of a vertical flue gas pass in a thermal power steam generator1 Jul 2025US 12,345,411 B2Sumitomo SHI FW Energia Oy
- Compact fluid heating system with high bulk heat flux using elevated heat exchanger pressure drop1 Jul 2025US 12,345,445 B2Fulton Group N.A., Inc.
- Shortened piping layout for steam cycle circuit of combined-cycle power plant9 Jul 2026US 2026/0193994 A1GE Vernova Infrastructure Technology LLC
- Arrangement for supporting boiler2 Apr 2026US 2026/0092700 A1Valmet Technologies Oy
- Methods and devices for controlling steam introduction in a kiln16 Oct 2025US 2025/0320996 A1Group14 Technologies, Inc.
- Pair of support plates for tubes in a reactor vessel2 Oct 2025US 2025/0305674 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Vapor generation system and apparatus11 Sep 2025US 2025/0283594 A1General Electric Company
Most cited
By later US patents
- Steam cooled hanger tube for horizontal superheaters and reheaters60US 4,421,070 ACombustion Engineering, Inc. · 1983
- Kernel-based method for detecting boiler tube leaks60US 8,275,577 B2SmartSignal Corporation · 2012
- Fluidized bed heat exchanger with water cooled air distributor and dust hopper57US 4,301,771 ADorr-Oliver Incorporated · 1981
- Band type tube support46US 4,100,889 ACombustion Engineering, Inc. · 1978
- Tapered corrosion protection of tubes at mud drum location46US 6,495,268 B1The Babcock & Wilcox Company · 2002