F01D 17/18
Varying effective number of nozzles or guide conduits
Official title: varying effective number of nozzles or guide conduits {, e.g. sequentially operable valves for steam turbines}
F01D17/18 (Varying effective number of nozzles or guide conduits) appears on 117 US grants and 79 published applications in this corpus.
Search patents in F01D- Granted patents
- 117
- Published applications
- 79
- Assignees
- 59
- Inventors
- 228
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 4 |
| 2011 | 0 | 6 |
| 2012 | 2 | 4 |
| 2013 | 5 | 3 |
| 2014 | 2 | 6 |
| 2015 | 1 | 3 |
| 2016 | 3 | 9 |
| 2017 | 5 | 4 |
| 2018 | 4 | 6 |
| 2019 | 12 | 7 |
| 2020 | 7 | 9 |
| 2021 | 7 | 0 |
| 2022 | 3 | 3 |
| 2023 | 3 | 3 |
| 2024 | 4 | 2 |
| 2025 | 1 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steam valve and steam turbine plant15 Apr 2025US 12,276,349 B2Kabushiki Kaisha Toshiba
- Radial turbine nozzle and method for assembling the same16 Jul 2024US 12,037,928 B2Honda Motor Co., Ltd.
- Guide vane wheel of a turbomachine25 Jun 2024US 12,018,570 B2Rolls-Royce Deutschland Ltd & Co KG
- Valve controller system and method28 May 2024US 11,994,035 B2Pentair Residential Filtration, LLC
- Valve device and valve lid27 Feb 2024US 11,913,347 B2Mitsubishi Heavy Industries Compressor Corporation
- Rotor assembly with independent platforms and method for assembling such a rotor20 Aug 2026US 2026/0243168 A1
- Passenger compartment and method for manufacturing passenger compartment13 Aug 2026US 2026/0235047 A1Mitsubishi Heavy Industries Compressor Corporation
- Steam turbine seal ring finishing apparatus and method of use1 Jan 2026US 2026/0001146 A1GE Infrastructure Technology LLC
- Gas turbine engine including stub-tandem variable inlet guide vanes11 Sep 2025US 2025/0283421 A1General Electric Company
- Turbine1 May 2025US 2025/0137388 A1IHI Corporation
Most cited
By later US patents
- Ring valve for turbine flow control53US 6,402,465 B1Dresser-Rand Company · 2002
- Steam turbine control system and method of controlling the ratio of steam flow between under full-arc admission mode and under partial-arc admission mode41US 4,120,159 AHitachi, Ltd. · 1978
- Variable-volume turbocharger21US 4,719,757 AMitsubishi Jidosha Kogya Kabushiki Kaisha · 1988
- Turbo-supercharger for an internal combustion engine21US 4,730,456 AMazda Motor Corporation · 1988
- Method for heat rate improvement in partial-arc steam turbine21US 4,888,954 AWestinghouse Electric Corp. · 1989