F05D 2220/72
A steam turbine
Official title: a steam turbine
F05D2220/72 (A steam turbine) appears on 327 US grants and 439 published applications in this corpus.
Search patents in F05D- Granted patents
- 327
- Published applications
- 439
- Assignees
- 124
- Inventors
- 890
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 2 |
| 2002 | 5 | 4 |
| 2003 | 5 | 4 |
| 2004 | 3 | 10 |
| 2005 | 3 | 1 |
| 2006 | 6 | 6 |
| 2007 | 4 | 12 |
| 2008 | 1 | 11 |
| 2009 | 4 | 10 |
| 2010 | 6 | 27 |
| 2011 | 11 | 19 |
| 2012 | 7 | 16 |
| 2013 | 12 | 16 |
| 2014 | 11 | 20 |
| 2015 | 14 | 23 |
| 2016 | 15 | 33 |
| 2017 | 15 | 32 |
| 2018 | 20 | 32 |
| 2019 | 28 | 22 |
| 2020 | 26 | 19 |
| 2021 | 21 | 24 |
| 2022 | 25 | 24 |
| 2023 | 21 | 21 |
| 2024 | 29 | 26 |
| 2025 | 15 | 18 |
| 2026 | 8 | 7 |
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
- H2 power plant with O2 integration25 Aug 2026US 12,716,371 B2Mitsubishi Power Americas, Inc.
- 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.
- Turbine engine including a steam system10 Mar 2026US 12,571,345 B2General Electric Company
- Turbo machine24 Feb 2026US 12,560,117 B2
- Single-shaft combined cycle plant control device and single-shaft combined cycle plant control method3 Sep 2026US 2026/0258757 A1Mitsubishi Heavy Industries, Ltd.
- Ammonia slip mitigation systems and methods30 Jul 2026US 2026/0217576 A1CPV Power Holdings, LP
- Integration systems for gas turbine engines and methods of use7 May 2026US 2026/0126003 A1GE Vernova Infrastructure Technology LLC
- System and method for producing ammonia7 May 2026US 2026/0126004 A1Siemens Energy Global GmbH & Co. KG
- Multi-stage power generation using byproducts for enhanced generation5 Mar 2026US 2026/0063057 A1BJ Energy Solutions, LLC
Most cited
By later US patents
- Semi-closed Brayton cycle gas turbine power systems196US 6,910,335 B2Clean Energy Systems, Inc. · 2005
- Semi-closed brayton cycle gas turbine power systems191US 6,637,183 B2Clean Energy Systems, Inc. · 2003
- Semi-closed brayton cycle gas turbine power systems169US 6,622,470 B2Clean Energy Systems, Inc. · 2003
- Working fluid compositions for use in semi-closed brayton cycle gas turbine power systems136US 6,824,710 B2Clean Energy Systems, Inc. · 2004
- Gas turbine exhaust recirculation method and apparatus131US 6,202,400 B1Hitachi, Ltd. · 2001