F22D 11/006
Arrangements of feedwater cleaning with a boiler
Official title: {Arrangements of feedwater cleaning with a boiler}
F22D11/006 (Arrangements of feedwater cleaning with a boiler) appears on 70 US grants and 34 published applications in this corpus.
Search patents in F22D- Granted patents
- 70
- Published applications
- 34
- Assignees
- 47
- Inventors
- 167
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 5 |
| 2012 | 2 | 1 |
| 2013 | 2 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 3 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 3 |
| 2022 | 0 | 3 |
| 2023 | 7 | 2 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for removing organic compounds from water used to generate steam10 Feb 2026US 12,545,602 B2Donaldson Company, Inc.
- Solute concentration decision method and water quality management method for steam turbine plant2 Jul 2024US 12,025,305 B2Mitsubishi Heavy Industries, Ltd.
- Steam turbine plant and control device, and water quality management method for steam turbine plant5 Dec 2023US 11,834,969 B2Mitsubishi Power, Ltd.
- Seawater leakage detection device in feedwater system, method for detecting seawater leakage in feedwater system, and steam turbine plant31 Oct 2023US 11,802,688 B2Mitsubishi Heavy Industries, Ltd.
- Systems and methods for removing organic compounds from steam1 Aug 2023US 11,713,877 B2Donaldson Company, Inc.
- Process and Steam Generating Device for Generating Process Steam19 Sep 2024US 2024/0310035 A1Fraunhofer-Gesellschaft zur Forderung der Angwandten Forschung e.V.
- Recovery and reuse of high-pressure boilers and heat recovery steam generators blowdown using microwave energy irradiation25 Jul 2024US 2024/0247799 A1Saudi Arabian Oil Company
- Systems and methods for removing organic compounds from water used to generate steam12 Oct 2023US 2023/0322586 A1Donaldson Company, Inc.
- Dirty water and exhaust constituent free, direct steam generation, convaporator system, apparatus and method14 Sep 2023US 2023/0288054 A1XDI Holdings, LLC
- Solute concentration decision method and water quality management method for steam turbine plant15 Sep 2022US 2022/0290858 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Inhibition of scale deposition from steam generation fluids76US 4,476,930 AUnion Oil Company of California · 1984
- Method for production of high pressure steam from produced water54US 7,591,309 B2Aquatech International Corporation · 2009
- Water treatment control system for a boiler40US 5,152,252 AAutotrol Corporation · 1992
- Concentration cycles, percent life holding time and continuous treatment concentration monitoring in boiler systems by inert tracers39US 5,041,386 ANalco Chemical Company · 1991
- Method of gas blanketing a boiler38US 5,050,540 A1991