F02K 3/12
Plants including a gas turbine driving a compressor or a ducted fan
Official title: characterised by having more than one gas turbine
F02K3/12 (Plants including a gas turbine driving a compressor or a ducted fan) appears on 62 US grants and 67 published applications in this corpus.
Search patents in F02K- Granted patents
- 62
- Published applications
- 67
- Assignees
- 27
- Inventors
- 107
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 2 |
| 2004 | 3 | 3 |
| 2005 | 4 | 1 |
| 2006 | 2 | 2 |
| 2007 | 2 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 3 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 2 |
| 2015 | 3 | 3 |
| 2016 | 1 | 0 |
| 2017 | 0 | 4 |
| 2018 | 4 | 8 |
| 2019 | 1 | 3 |
| 2020 | 5 | 3 |
| 2021 | 2 | 3 |
| 2022 | 6 | 2 |
| 2023 | 5 | 3 |
| 2024 | 4 | 6 |
| 2025 | 3 | 0 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Transmission and method for control of boost spool26 Aug 2025US 12,398,679 B2Rtx Corporation
- Powerplant with multiple integrated gas turbine engines19 Aug 2025US 12,392,296 B2Rtx Corporation
- Distributed propulsion with offset propulsion modules20 May 2025US 12,305,569 B2Institut Superieur De L Aeronautique Et De L Espace
- Pre-heating aircraft engine in standby mode8 Oct 2024US 12,110,116 B1Rtx Corporation
- Power turbine shaft for decoupled gas generator17 Sep 2024US 12,091,183 B1Rtx Corporation
- Low pressure recovery inlet for gas turbine engine turbomachinery on aircraft6 Aug 2026US 2026/0226860 A1Rolls-Royce North American Technologies Inc.
- Aircraft propulsion system with auxiliary flowpath system30 Jul 2026US 2026/0218655 A1Rtx Corporation
- Powerplant Assembly for an Aircraft16 Jul 2026US 2026/0200581 A1Pratt & Whitney Canada Corp.
- Symmetric Open Propulsor Rotating Patterns for Aircraft16 Jul 2026US 2026/0200583 A1Rtx Corporation
- Aircraft with symmetric propulsion system rotating patterns11 Jun 2026US 2026/0159242 A1Rtx Corporation
Most cited
By later US patents
- System, method and apparatus for lean combustion with plasma from an electrical arc107US 8,074,439 B2Foret Plasma Labs, LLC · 2011
- Partial span inlet guide vane for cross-connected engines66US 4,254,619 AGeneral Electric Company · 1981
- Turbofan arrangement51US 7,107,756 B2ROLLS-ROYCE plc · 2006
- Turbofan arrangement50US 7,770,377 B2ROLLS-ROYCE plc · 2010
- Variable cycle propulsion system with gas tapping for a supersonic airplane, and a method of operation33US 6,845,606 B2Snecma Moteurs · 2005