F22B 37/48
Devices or arrangements for removing water, minerals or sludge from boilers
Official title: Devices or arrangements for removing water, minerals or sludge from boilers (cleaning water tubes, furnace tubes or the like of boilers F28G) {; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers}
F22B37/48 (Devices or arrangements for removing water, minerals or sludge from boilers) appears on 351 US grants and 245 published applications in this corpus.
Search patents in F22B- Granted patents
- 351
- Published applications
- 245
- Assignees
- 207
- Inventors
- 690
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 14 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 12 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 11 | 0 |
| 1997 | 2 | 0 |
| 1998 | 11 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 4 |
| 2003 | 7 | 4 |
| 2004 | 5 | 6 |
| 2005 | 3 | 3 |
| 2006 | 0 | 7 |
| 2007 | 3 | 6 |
| 2008 | 5 | 8 |
| 2009 | 4 | 11 |
| 2010 | 5 | 9 |
| 2011 | 7 | 17 |
| 2012 | 7 | 7 |
| 2013 | 8 | 10 |
| 2014 | 11 | 22 |
| 2015 | 6 | 14 |
| 2016 | 9 | 19 |
| 2017 | 11 | 14 |
| 2018 | 17 | 14 |
| 2019 | 21 | 17 |
| 2020 | 11 | 15 |
| 2021 | 18 | 9 |
| 2022 | 7 | 10 |
| 2023 | 14 | 7 |
| 2024 | 2 | 8 |
| 2025 | 9 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of pre-operational cleaning of water and steam systems in combined cycle power plants and combined cycle power plant arranged therefor25 Aug 2026US 12,716,366 B2GE Vernova Infrastructure Technology LLC
- Collecting apparatus, condensation equipment, and collecting method10 Feb 2026US 12,546,537 B2Mitsubishi Heavy Industries, Ltd.
- Steam treatment appliance and method for cleaning a steam treatment appliance16 Dec 2025US 12,498,120 B2BSH Hausgeräte GmbH
- Steam utilization system of factory producing concrete pipe pile2 Dec 2025US 12,485,577 B2Guangdong University of Technology
- Method and an arrangement for measuring mass changes of heat exchangers of a steam boiler5 Aug 2025US 12,379,104 B2Andritz Inc.
- Load adjustable electrode steam boiler27 Aug 2026US 2026/0251295 A1Fangkuai Boiler Co., Ltd.
- Chemical dispensing system for treating fluid in boiler/cooling systems8 Jan 2026US 2026/0009531 A1Condor Technologies, Inc.
- Sludge lance for cleaning a steam generator7 Aug 2025US 2025/0251202 A1Westinghouse Electric Corp.
- Method of pre-operational cleaning of water and steam systems in combined cycle power plants and combined cycle power plant arranged therefor12 Jun 2025US 2025/0188848 A1GE Infrastructure Technology LLC
- Waste heat recovery system and method19 Dec 2024US 2024/0418360 A1Samsung E&A Co., Ltd.
Most cited
By later US patents
- Cellulosic fibrous structures having at least three regions distinguished by intensive properties235US 5,277,761 AThe Procter & Gamble Company · 1994
- Cellulosic fibrous structures having at least three regions distinguished by intensive properties115US 5,804,281 AThe Proctor & Gamble Company · 1998
- Method for making cellulosic fibrous structures having at least three regions distinguished by intensive properties75US 5,443,691 AThe Procter & Gamble Company · 1995
- Automatic boiler level controller63US 6,666,086 B2Clark-Reliance Corporation · 2003
- Steam generator sludge removal system62US 4,079,701 AWestinghouse Electric Corp. · 1978