F05D 2220/31
In steam turbines
Official title: in steam turbines
F05D2220/31 (In steam turbines) appears on 966 US grants and 1,226 published applications in this corpus.
Search patents in F05D- Granted patents
- 966
- Published applications
- 1,226
- Assignees
- 205
- Inventors
- 2,193
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 2 |
| 2002 | 7 | 3 |
| 2003 | 7 | 8 |
| 2004 | 6 | 9 |
| 2005 | 7 | 10 |
| 2006 | 7 | 10 |
| 2007 | 9 | 44 |
| 2008 | 13 | 22 |
| 2009 | 11 | 48 |
| 2010 | 27 | 56 |
| 2011 | 32 | 63 |
| 2012 | 45 | 71 |
| 2013 | 42 | 67 |
| 2014 | 53 | 54 |
| 2015 | 44 | 76 |
| 2016 | 50 | 99 |
| 2017 | 58 | 105 |
| 2018 | 66 | 98 |
| 2019 | 87 | 69 |
| 2020 | 95 | 62 |
| 2021 | 70 | 75 |
| 2022 | 69 | 63 |
| 2023 | 62 | 41 |
| 2024 | 39 | 41 |
| 2025 | 26 | 13 |
| 2026 | 15 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Monitoring and control device for rotating machine, rotating machine equipment, monitoring and control method for rotating machine, and monitoring and control program for rotating machine18 Aug 2026US 12,709,990 B2Mitsubishi Heavy Industries, Ltd.
- Reaction turbine operating on condensing vapors18 Aug 2026US 12,709,999 B2
- Rotor assembly having a closure group of rotor blades with fixturing and alignment features4 Aug 2026US 12,698,712 B1GE Vernova Infrastructure Technology LLC
- Method for estimating erosion of steam turbine rotor blade using concentration of substance in feed water14 Jul 2026US 12,680,469 B2Mitsubishi Heavy Industries, Ltd.
- Passenger compartment and method for manufacturing passenger compartment13 Aug 2026US 2026/0235047 A1Mitsubishi Heavy Industries Compressor Corporation
- Plant control device and calculation amount changeability determination method30 Jul 2026US 2026/0221771 A1Hitachi, Ltd.
- Steam turbine23 Jul 2026US 2026/0210251 A1Mitsubishi Heavy Ind. Compressor Corp.
- A steam turbine and a use of the steam turbine, a method of manufacturing or servicing of said steam turbine, a small-modular reactor and a power plant including said steam turbine23 Jul 2026US 2026/0210252 A1General Electric Technology GmbH
- Steam turbine unit2 Jul 2026US 2026/0185461 A1Mitsubishi Heavy Industries Compressor Corporation
Most cited
By later US patents
- Neural network state diagnostic system for equipment166US 5,333,240 AHitachi, Ltd. · 1994
- Methods and apparatus for model predictive control in a real time controller70US 8,005,575 B2General Electric Company · 2011
- Hybrid propulsive engine including at least one independently rotatable compressor stator70US 8,549,833 B2The Invention Science Fund I, LLC · 2013
- Dual heat exchanger power cycle66US 7,770,376 B1Florida Turbine Technologies, Inc. · 2010
- Dedicated microcomputer-based control system for steam turbine-generators60US 4,280,060 AGeneral Electric Company · 1981