F02C 3/10
With another turbine driving an output shaft but not driving the compressor
Official title: with another turbine driving an output shaft but not driving the compressor
F02C3/10 (With another turbine driving an output shaft but not driving the compressor) appears on 456 US grants and 517 published applications in this corpus.
Search patents in F02C- Granted patents
- 456
- Published applications
- 517
- Assignees
- 130
- Inventors
- 757
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 7 | 2 |
| 2003 | 3 | 4 |
| 2004 | 5 | 5 |
| 2005 | 1 | 0 |
| 2006 | 2 | 4 |
| 2007 | 2 | 7 |
| 2008 | 2 | 7 |
| 2009 | 6 | 12 |
| 2010 | 8 | 22 |
| 2011 | 9 | 15 |
| 2012 | 11 | 13 |
| 2013 | 6 | 16 |
| 2014 | 8 | 20 |
| 2015 | 9 | 41 |
| 2016 | 23 | 69 |
| 2017 | 25 | 46 |
| 2018 | 43 | 44 |
| 2019 | 54 | 31 |
| 2020 | 37 | 30 |
| 2021 | 36 | 32 |
| 2022 | 28 | 19 |
| 2023 | 19 | 16 |
| 2024 | 24 | 25 |
| 2025 | 25 | 19 |
| 2026 | 8 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aircraft propulsion system with auxiliary turbine system7 Jul 2026US 12,674,411 B2Rtx Corporation
- Control system for open rotor propulsion system with one or more sensors9 Jun 2026US 12,650,085 B1Rtx Corporation
- Overspeed protection for a turbocompressor of an aircraft powerplant assembly12 May 2026US 12,624,664 B1Pratt & Whitney Canada Corp.
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation5 May 2026US 12,618,385 B2General Electric Company
- Electric motor propulsion system for an aircraft24 Mar 2026US 12,583,608 B2Pratt & Whitney Canada Corp.
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation17 Sep 2026US 2026/0275941 A1General Electric Company
- 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
- Hybrid aircraft propulsion system23 Jul 2026US 2026/0210264 A1Rtx Corporation
- Powerplant Assembly for an Aircraft16 Jul 2026US 2026/0200581 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Gas turbine compressor inlet pressurization system and method for power augmentation196US 6,530,224 B1General Electric Company · 2003
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007
- Thermoelectric cryoprobe155US 4,519,389 A1985
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008
- High efficiency, twin spool, radial-high pressure, gas turbine engine139US 5,081,832 A1992