F22B 35/00
Control systems for steam boilers
Official title: Control systems for steam boilers (for regulating feed-water supply F22D5/00; for controlling superheat temperature F22G5/00)
F22B35/00 (Control systems for steam boilers) appears on 595 US grants and 551 published applications in this corpus.
Search patents in F22B- Granted patents
- 595
- Published applications
- 551
- Assignees
- 296
- Inventors
- 1,254
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 17 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 11 | 0 |
| 1990 | 3 | 0 |
| 1991 | 10 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 2 |
| 2003 | 4 | 1 |
| 2004 | 5 | 5 |
| 2005 | 6 | 3 |
| 2006 | 2 | 7 |
| 2007 | 5 | 12 |
| 2008 | 5 | 10 |
| 2009 | 4 | 13 |
| 2010 | 5 | 17 |
| 2011 | 4 | 31 |
| 2012 | 5 | 20 |
| 2013 | 19 | 36 |
| 2014 | 22 | 43 |
| 2015 | 25 | 39 |
| 2016 | 30 | 27 |
| 2017 | 29 | 21 |
| 2018 | 27 | 24 |
| 2019 | 22 | 28 |
| 2020 | 22 | 31 |
| 2021 | 21 | 20 |
| 2022 | 35 | 35 |
| 2023 | 35 | 40 |
| 2024 | 46 | 33 |
| 2025 | 18 | 36 |
| 2026 | 22 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22B 35/06Control systems for steam boilers: for steam boilers of forced-flow type213
- F22B 35/18Applications of computers to steam-boiler control102
- F22B 35/007Control systems for waste heat boilers68
- F22B 35/004Control systems for steam generators of nuclear power plants55
- F22B 35/008Control systems for two or more steam generators43
- F22B 35/002Control by recirculating flue gases29
- F22B 35/005Control systems for instantaneous steam boilers21
- F22B 35/02Control systems for steam boilers: for steam boilers with natural convection circulation16
All 9 subgroupsShow fewer
Recent patents
- Thermal energy storage system coupled with a solid oxide electrolysis system6 Oct 2026US 12,753,710 B2Rondo Energy, Inc.
- Thermal energy storage system coupled with thermal power cycle systems8 Sep 2026US 12,729,632 B1Rondo Energy, Inc.
- Thermal energy storage systems for use in material processing1 Sep 2026US 12,723,524 B2Rondo Energy, Inc.
- Methods for material activation with thermal energy storage system18 Aug 2026US 12,709,998 B2Rondo Energy, Inc.
- Artificial intelligence-based optimal air damper control system and method for increasing energy efficiency of industrial boilers28 Jul 2026US 12,693,009 B2Korea Electronics Technology Institute
- Systems and methods for boiler alert diagnostics20 Aug 2026US 2026/0243417 A1Saudi Arabian Oil Company
- System for reheat steam temperature turndown control in heat recovery steam generators23 Jul 2026US 2026/0210275 A1General Electric Technology GmbH
- Method for Controlling a Steam Network and Steam Network23 Jul 2026US 2026/0210543 A1Covestro Deutschland AG
- Thermal Energy Storage with Fluid Flow Insulation16 Jul 2026US 2026/0201821 A1Rondo Energy, Inc.
- Industrial boiler control method using statistical data according to combustion stage change2 Jul 2026US 2026/0185697 A1Korea Electronics Technology Institute
Most cited
By later US patents
- Method and system for controlling a vapor generator87US 7,167,776 B2Philip Morris USA Inc. · 2007
- Method and apparatus for detecting faults in steam generator system components and other continuous processes82US 7,113,890 B2ABB AB · 2006
- System and method for high efficiency power generation using a carbon dioxide circulating working fluid79US 8,596,075 B28 Rivers Capital, LLC · 2013
- Driven starter pump and start sequence66US 8,616,001 B2Echogen Power Systems, LLC · 2013
- Variable pressure power cycle and control system65US 4,484,446 AW. K. Technology, Inc. · 1984