F02C 3/107
With two or more rotors connected by power transmission
Official title: with two or more rotors connected by power transmission
F02C3/107 (With two or more rotors connected by power transmission) appears on 800 US grants and 1,057 published applications in this corpus.
Search patents in F02C- Granted patents
- 800
- Published applications
- 1,057
- Assignees
- 107
- Inventors
- 916
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 0 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 4 |
| 2007 | 1 | 14 |
| 2008 | 2 | 10 |
| 2009 | 7 | 13 |
| 2010 | 12 | 12 |
| 2011 | 9 | 12 |
| 2012 | 16 | 28 |
| 2013 | 16 | 67 |
| 2014 | 35 | 51 |
| 2015 | 34 | 82 |
| 2016 | 19 | 103 |
| 2017 | 28 | 81 |
| 2018 | 70 | 68 |
| 2019 | 70 | 58 |
| 2020 | 73 | 93 |
| 2021 | 73 | 90 |
| 2022 | 80 | 51 |
| 2023 | 65 | 59 |
| 2024 | 73 | 50 |
| 2025 | 53 | 46 |
| 2026 | 24 | 60 |
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
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation23 Jun 2026US 12,662,979 B2General Electric Company
- Gas turbine engine16 Jun 2026US 12,655,803 B2General Electric Company
- Geared architecture for high speed and small volume fan drive turbine16 Jun 2026US 12,655,811 B2Rtx Corporation
- Engine mount system for a gas turbine engine16 Jun 2026US 12,655,812 B2Rtx Corporation
- Compounded turbo power unit with boost combustor17 Sep 2026US 2026/0275905 A1Rtx Corporation
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation17 Sep 2026US 2026/0275941 A1General Electric Company
- Two-speed epicyclic gearbox for aircraft propulsion system20 Aug 2026US 2026/0242065 A1Pratt & Whitney Canada Corp.
- Assembly for gas turbine engine13 Aug 2026US 2026/0235080 A1General Electric Company
- Controlling the dynamic behavior of an aeronautical propulsion system30 Jul 2026US 2026/0218657 A1Safran Aircraft Engines
Most cited
By later US patents
- Geared counterrotating turbine/fan propulsion system226US 5,010,729 AGeneral Electric Company · 1991
- Differential geared engine201US 4,251,987 AGeneral Electric Company · 1981
- Shaft power transfer in gas turbine engines with machines operable as generators or motors166US 5,694,765 AROLLS-ROYCE plc · 1997
- High bypass turbofan engine having a partially geared fan drive turbine134US 4,916,894 AGeneral Electric Company · 1990
- Gas turbine engine system127US 5,867,979 AROLLS-ROYCE plc · 1999