F22B 37/56
Boiler cleaning control devices
Official title: Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
F22B37/56 (Boiler cleaning control devices) appears on 103 US grants and 66 published applications in this corpus.
Search patents in F22B- Granted patents
- 103
- Published applications
- 66
- Assignees
- 70
- Inventors
- 201
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 5 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 3 | 2 |
| 2009 | 1 | 5 |
| 2010 | 0 | 2 |
| 2011 | 4 | 1 |
| 2012 | 1 | 2 |
| 2013 | 4 | 6 |
| 2014 | 4 | 5 |
| 2015 | 1 | 3 |
| 2016 | 1 | 3 |
| 2017 | 2 | 1 |
| 2018 | 5 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 3 |
| 2022 | 0 | 6 |
| 2023 | 5 | 8 |
| 2024 | 6 | 1 |
| 2025 | 4 | 2 |
| 2026 | 1 | 0 |
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
- Method and an arrangement for measuring mass changes of heat exchangers of a steam boiler5 Aug 2025US 12,379,104 B2Andritz Inc.
- System and methods for controlling operation of a recovery boiler to reduce fouling1 Jul 2025US 12,345,410 B2International Paper Company
- 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
- Humidifier for a fan coil4 Feb 2025US 12,215,889 B2Omachron Intellectual Property Inc.
- 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
- Humidifier for a fan coil24 Apr 2025US 2025/0129951 A1Omachron Intellectual Property Inc.
- Method for cleaning the heat exchange tubes of steam generators in a nuclear power station25 Jan 2024US 2024/0027150 A1Atomenergoremont Joint-Stock Company
- Intelligent prediction of boiler blowdown5 Oct 2023US 2023/0313984 A1Saudi Arabian Oil Company
- Method, apparatus and system for enhanced oil and gas recovery with direct steam generation, multiphase close coupled heat exchanger system, super focused heat7 Sep 2023US 2023/0279755 A1XDI Holdings, LLC
Most cited
By later US patents
- Soot chaser142US 4,869,209 AEngineering Controls, Inc. · 1989
- Sludge measuring apparatus and ultrasonic probe assembly therefor60US 4,355,536 AWestinghouse Electric Corp. · 1982
- Steam generator for cooking equipment having a decalcification means49US 4,991,545 A1991
- Method and apparatus for sootblowing recovery boiler49US 6,758,168 B2Metso Automation Oy · 2004
- Method and system for sootblowing optimization42US 6,736,089 B1NeuCo, Inc. · 2004