F01D 15/12
Combinations with mechanical gearing
Official title: Combinations with mechanical gearing (driven by multiple engines F01D13/00)
F01D15/12 (Combinations with mechanical gearing) appears on 504 US grants and 643 published applications in this corpus.
Search patents in F01D- Granted patents
- 504
- Published applications
- 643
- Assignees
- 87
- Inventors
- 770
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 4 |
| 2008 | 1 | 4 |
| 2009 | 2 | 1 |
| 2010 | 4 | 3 |
| 2011 | 1 | 10 |
| 2012 | 5 | 3 |
| 2013 | 4 | 27 |
| 2014 | 13 | 18 |
| 2015 | 11 | 24 |
| 2016 | 16 | 83 |
| 2017 | 17 | 69 |
| 2018 | 48 | 68 |
| 2019 | 68 | 42 |
| 2020 | 58 | 59 |
| 2021 | 52 | 57 |
| 2022 | 39 | 37 |
| 2023 | 57 | 39 |
| 2024 | 38 | 35 |
| 2025 | 32 | 27 |
| 2026 | 17 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Turbofan engine having a low-pressure turbine15 Sep 2026US 12,735,987 B2MTU Aero Engines AG
- Fuel vaporization power turbine engine, method of assembly and method of use14 Jul 2026US 12,680,453 B1General Electric Company
- Electric machine assembly for a turbine engine14 Jul 2026US 12,680,465 B2GE Avio S. r. l.
- Geared architecture for high speed and small volume fan drive turbine16 Jun 2026US 12,655,811 B2Rtx Corporation
- Rotor turning apparatus for a steam turbine generator8 Oct 2026US 2026/0309045 A1
- Aircraft propulsion system with auxiliary drive unit17 Sep 2026US 2026/0275881 A1Rtx Corporation
- Gearbox arrangement for close to constant speed accessories17 Sep 2026US 2026/0275919 A1Rtx Corporation
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation17 Sep 2026US 2026/0275941 A1General Electric Company
- Gas turbine engine with starting system and method for using the same23 Jul 2026US 2026/0210294 A1Rtx Corporation
Most cited
By later US patents
- Differential geared turbine engine with torque modulation capability165US 6,895,741 B2Pratt & Whitney Canada Corp. · 2005
- Fluid rotary machine99US 4,105,372 AHitachi, Ltd. · 1978
- Gas turbine engine assembly and methods of assembling same87US 7,841,165 B2General Electric Company · 2010
- Geared architecture for high speed and small volume fan drive turbine87US 8,747,055 B2United Technologies Corporation · 2014
- Gas turbine engine assembly and methods of assembling same84US 7,832,193 B2General Electric Company · 2010