F01D 1/023
The working-fluid being divided into several separate flows
Official title: {the working-fluid being divided into several separate flows (F01D3/02 takes precedence); several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths}
F01D1/023 (The working-fluid being divided into several separate flows) appears on 72 US grants and 55 published applications in this corpus.
Search patents in F01D- Granted patents
- 72
- Published applications
- 55
- Assignees
- 47
- Inventors
- 149
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 4 |
| 2010 | 1 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 3 | 1 |
| 2014 | 3 | 6 |
| 2015 | 1 | 5 |
| 2016 | 1 | 2 |
| 2017 | 3 | 5 |
| 2018 | 6 | 6 |
| 2019 | 3 | 3 |
| 2020 | 7 | 3 |
| 2021 | 3 | 3 |
| 2022 | 6 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Turbine and turbocharger11 Feb 2025US 12,221,890 B2IHI Corporation
- Flow deflector for aperture in gas turbine engine flowpath wall16 Jan 2024US 11,873,737 B1Pratt & Whitney Canada Corp.
- Impulse turbine and turbine device7 Nov 2023US 11,808,155 B2
- Mixing ram and bleed air in a dual entry turbine system29 Nov 2022US 11,511,867 B2Hamilton Sundstrand Corporation
- Axial turbine with two supply levels18 Oct 2022US 11,473,428 B2TURBODEN S. p. A.
- Rotary assembly1 May 2025US 2025/0136285 A1ROLLS-ROYCE plc
- Turbine and turbocharger20 Jun 2024US 2024/0200456 A1IHI Corporation
- Flow deflector for aperture in gas turbine engine flowpath wall25 Jan 2024US 2024/0026794 A1Pratt & Whitney Canada Corp.
- Impulse turbine and turbine device22 Sep 2022US 2022/0298931 A1
- Axial turbine with two supply levels14 Apr 2022US 2022/0112809 A1TURBODEN S. p. A.
Most cited
By later US patents
- Hydrogen-rich fuel, closed-loop cooled, and reheat enhanced gas turbine powerplants106US 5,590,518 ACalifornia Energy Commission · 1997
- Performance enhanced gas turbine powerplants47US 5,490,377 ACalifornia Energy Commission · 1996
- Performance enhanced gas turbine powerplants43US 5,581,997 ACalifornia Energy Commission · 1996
- Performance enhanced gas turbine powerplants40US 5,678,408 ACalifornia Energy Commission · 1997
- Performance enhanced gas turbine powerplants33US 5,535,584 ACalifornia Energy Commission · 1996