F01D 5/06
Rotors for more than one axial stage
Official title: Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D5/022, F01D5/023 take precedence)}
F01D5/06 (Rotors for more than one axial stage) appears on 953 US grants and 1,040 published applications in this corpus.
Search patents in F01D- Granted patents
- 953
- Published applications
- 1,040
- Assignees
- 159
- Inventors
- 1,840
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 15 | 1 |
| 2002 | 15 | 7 |
| 2003 | 10 | 8 |
| 2004 | 5 | 5 |
| 2005 | 5 | 20 |
| 2006 | 10 | 13 |
| 2007 | 11 | 18 |
| 2008 | 11 | 15 |
| 2009 | 6 | 17 |
| 2010 | 11 | 39 |
| 2011 | 14 | 47 |
| 2012 | 20 | 42 |
| 2013 | 32 | 54 |
| 2014 | 37 | 55 |
| 2015 | 41 | 71 |
| 2016 | 41 | 97 |
| 2017 | 52 | 118 |
| 2018 | 69 | 96 |
| 2019 | 97 | 66 |
| 2020 | 96 | 69 |
| 2021 | 73 | 46 |
| 2022 | 47 | 29 |
| 2023 | 49 | 26 |
| 2024 | 33 | 29 |
| 2025 | 29 | 26 |
| 2026 | 23 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Extraction impeller for axial compressor6 Oct 2026US 12,753,769 B2GE Vernova Infrastructure Technology LLC
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Gas turbine engine rotor stage with sealing members22 Sep 2026US 12,742,392 B2Pratt & Whitney Canada Corp.
- Reaction turbine operating on condensing vapors18 Aug 2026US 12,709,999 B2
- Center tie rotor annular seal11 Aug 2026US 12,704,073 B2Rtx Corporation
- Expander and method of manufacturing24 Sep 2026US 2026/0286848 A1Nuovo Pignone Tecnologie Srl
- Gas turbine engine with a split mixed-flow turbine24 Sep 2026US 2026/0286855 A1Pratt & Whitney Canada Corp.
- Expander and thermodynamic cycle using the expander17 Sep 2026US 2026/0275871 A1Nuovo Pignone Tecnologie Srl
- An arc reaction engine and method of use20 Aug 2026US 2026/0243170 A1Ace Vtol Pty Ltd
- Low pressure turbine shaft installation tool20 Aug 2026US 2026/0243176 A1Rtx Corporation
Most cited
By later US patents
- Thermal seal for a gas turbine spacer disc1,527US 5,080,556 AGeneral Electric Company · 1992
- Flexible shaft for gas turbine engine391US 7,926,260 B2United Technologies Corporation · 2011
- High pressure gas generator rotor tie rod system for gas turbine engine130US 5,537,814 AGeneral Electric Company · 1996
- Geared differential speed counter-rotatable low pressure turbine106US 8,191,352 B2General Electric Company · 2012
- Turbine disk interstage seal system96US 5,236,302 AGeneral Electric Company · 1993