F01D 5/04
For radial-flow machines or engines
Official title: for radial-flow machines or engines
F01D5/04 (For radial-flow machines or engines) appears on 597 US grants and 604 published applications in this corpus.
Search patents in F01D- Granted patents
- 597
- Published applications
- 604
- Assignees
- 229
- Inventors
- 1,309
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 9 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 4 | 0 |
| 2003 | 2 | 8 |
| 2004 | 7 | 13 |
| 2005 | 9 | 10 |
| 2006 | 8 | 9 |
| 2007 | 6 | 9 |
| 2008 | 1 | 13 |
| 2009 | 4 | 10 |
| 2010 | 3 | 12 |
| 2011 | 9 | 16 |
| 2012 | 13 | 15 |
| 2013 | 13 | 23 |
| 2014 | 11 | 13 |
| 2015 | 15 | 35 |
| 2016 | 9 | 37 |
| 2017 | 27 | 74 |
| 2018 | 36 | 50 |
| 2019 | 58 | 55 |
| 2020 | 59 | 54 |
| 2021 | 52 | 27 |
| 2022 | 36 | 35 |
| 2023 | 41 | 35 |
| 2024 | 28 | 20 |
| 2025 | 23 | 17 |
| 2026 | 13 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Impeller back-face cooling manifold8 Sep 2026US 12,729,647 B1Pratt & Whitney Canada Corp.
- Aircraft gas turbine engine impeller with a trailing edge that is non-linear or angled or irregularly-shaped25 Aug 2026US 12,716,424 B2Pratt & Whitney Canada Corp.
- Radial turbine assembly with ceramic matrix composite airfoils having circumferential dovetail retention16 Jun 2026US 12,655,770 B2Rolls-Royce North American Technologies Inc.
- Center tie rotor seal26 May 2026US 12,637,953 B1Rtx Corporation
- Aircraft engine having scroll case with flange connection19 May 2026US 12,631,129 B2Pratt & Whitney Canada Corp.
- Radial turbine wheel, radial turbine, and turbocharger3 Sep 2026US 2026/0258728 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Centrifugal compressor impeller and method of producing the same6 Aug 2026US 2026/0226911 A1Pratt & Whitney Canada Corp.
- Turbocharger23 Jul 2026US 2026/0210287 A1IHI Corporation
- Hollow multi chambered radial wheel for a charging system9 Jul 2026US 2026/0194068 A1Accelleron Switzerland Ltd.
- Hybrid shroud impeller25 Jun 2026US 2026/0177077 A1Rtx Corporation
Most cited
By later US patents
- Gaseous fuel compression and control system and method100US 5,819,524 ACapstone Turbine Corporation · 1998
- Single rotor turbine engine75US 6,430,917 B1The Regents of the University of California · 2002
- Multi stage centrifugal impeller71US 4,502,837 AGeneral Electric Company · 1985
- Blade clearance control for turbomachinery69US 6,273,671 B1Allison Advanced Development Company · 2001
- Thrust controlled rotary apparatus66US 4,170,435 A1979