F01D 1/10
Having two or more stages subjected to working-fluid flow without essential intermediate
Official title: having two or more stages subjected to working-fluid flow without essential intermediate pressure change, i.e. with velocity stages (F01D1/12 takes precedence)
F01D1/10 (Having two or more stages subjected to working-fluid flow without essential intermediate) appears on 16 US grants and 18 published applications in this corpus.
Search patents in F01D- Granted patents
- 16
- Published applications
- 18
- Assignees
- 13
- Inventors
- 38
- Latest grant
- 18 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Steam turbine configured to recover static pressure of steam in diffuser18 Jul 2023US 11,702,962 B2Mitsubishi Heavy Industries Compressor Corporation
- High pressure compressor for an engine10 Aug 2021US 11,085,453 B2MTU Aero Engines AG
- Steam turbine8 Jun 2021US 11,028,695 B2Mitsubishi Power, Ltd.
- Geared turbofan with three turbines all counter-rotating10 Nov 2020US 10,830,130 B2Raytheon Technologies Corporation
- Gas turbine engine8 Mar 2016US 9,279,334 B2Dresser-Rand Company
- Turbine blade and steam turbine6 Mar 2025US 2025/0075633 A1Mitsubishi Heavy Industries, Ltd.
- Steam turbine17 Mar 2022US 2022/0082025 A1Mitsubishi Heavy Industries Compressor Corporation
- Steam turbine27 Feb 2020US 2020/0063561 A1Mitsubishi Hitachi Power Systems, Ltd.
- High pressure compressor for an engine23 Jan 2020US 2020/0024948 A1MTU Aero Engines AG
- Geared turbofan with three turbines all counter-rotating10 May 2018US 2018/0128168 A1United Technologies Corporation
Most cited
By later US patents
- Limited expansion vapor cycle21US 4,479,354 A1984
- Cover plate with interstage seal for a gas turbine engine21US 8,740,554 B2United Technologies Corporation · 2014
- Multi-stage turbomachine and design method18US 6,378,287 B22002
- Geared turbofan with three turbines all counter-rotating17US 9,074,485 B2United Technologies Corporation · 2015
- Impulse turbine with a drum rotor, and improvements to such turbines11US 5,328,326 AGEC Alsthom SA · 1994