F01D 1/18
Without stationary working-fluid guiding means
Official title: without stationary working-fluid guiding means; (F01D1/24, F01D1/32, F01D1/34 take precedence; {with pressure-velocity transformation exclusively in rotor F01D1/32})
F01D1/18 (Without stationary working-fluid guiding means) appears on 95 US grants and 103 published applications in this corpus.
Search patents in F01D- Granted patents
- 95
- Published applications
- 103
- Assignees
- 63
- Inventors
- 209
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 4 |
| 2008 | 2 | 1 |
| 2009 | 3 | 3 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 0 | 3 |
| 2013 | 2 | 8 |
| 2014 | 2 | 6 |
| 2015 | 3 | 16 |
| 2016 | 5 | 11 |
| 2017 | 6 | 2 |
| 2018 | 9 | 7 |
| 2019 | 5 | 6 |
| 2020 | 7 | 6 |
| 2021 | 4 | 5 |
| 2022 | 5 | 4 |
| 2023 | 3 | 3 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radial expander14 Apr 2026US 12,601,264 B2Everllence SE
- Artificial snow-making facility28 Oct 2025US 12,455,105 B2Technoalpin France
- Separable fluid turbine rotor8 Oct 2024US 12,110,806 B1XFlow Energy Company
- Pulsed supersonic air-turbine engine with speed control11 Jun 2024US 12,006,868 B2
- Gas turbine engine2 Jan 2024US 11,859,537 B2Tns Teknologi
- Turbine engine system7 May 2026US 2026/0125981 A1Heleng Inc.
- Turbine with Rotary Blades27 Mar 2025US 2025/0101944 A1
- Fluid turbine29 Feb 2024US 2024/0068369 A1XFlow Energy Company
- Ultra-micro gas turbine generator31 Aug 2023US 2023/0272742 A1Technion Research & Development Foundation Limited
- Pulsed Supersonic Air-Turbine Engine with Speed Control22 Jun 2023US 2023/0193826 A1
Most cited
By later US patents
- Generating energy from fluid expansion34US 7,638,892 B2Calnetix, Inc. · 2009
- Refrigerant expander compressor31US 3,934,424 AEnserch Corporation · 1976
- Rotating process chamber with integral pump and energy recovery turbine30US 6,713,028 B1Fluid Equipment Development Company, LLC · 2004
- Turbine with spiral partitions on the casing and rotor thereof20US 5,277,542 A1994
- Radial flow turbine20US 7,390,163 B22008