B64D 35/023
Of series-parallel type
Official title: of series-parallel type
B64D35/023 (Of series-parallel type) appears on 236 US grants and 292 published applications in this corpus.
Search patents in B64D- Granted patents
- 236
- Published applications
- 292
- Assignees
- 84
- Inventors
- 463
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 3 | 5 |
| 2016 | 1 | 8 |
| 2017 | 5 | 16 |
| 2018 | 10 | 25 |
| 2019 | 20 | 23 |
| 2020 | 20 | 47 |
| 2021 | 32 | 29 |
| 2022 | 23 | 44 |
| 2023 | 40 | 34 |
| 2024 | 40 | 20 |
| 2025 | 26 | 18 |
| 2026 | 13 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid aircraft power plant and method of operation18 Aug 2026US 12,709,399 B2Pratt & Whitney Canada Corp.
- Hybrid drive and fuel vaporizer for UAV and other mobile environments18 Aug 2026US 12,709,419 B2LiquidPiston, Inc.
- Modular power plant for a rotorcraft and associated rotorcraft11 Aug 2026US 12,703,500 B2Airbus Helicopters
- Propulsion system having fluidly separate lubrication systems for propulsors and turbo-engine11 Aug 2026US 12,704,096 B2General Electric Company
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation23 Jun 2026US 12,662,979 B2General Electric Company
- Hybrid-electric propulsion system equipped with a coupler for switching between modes of operation17 Sep 2026US 2026/0275941 A1General Electric Company
- Aircraft Hybrid Electric Propulsion System20 Aug 2026US 2026/0242066 A1Pratt & Whitney Canada Corp.
- Gearbox with integrated mechanical disconnect30 Jul 2026US 2026/0217380 A1Pratt & Whitney Canada Corp.
- Aircraft Propulsion System with Electric Machine System Cooling Circuit9 Jul 2026US 2026/0192939 A1Rtx Corporation
- Aircraft electrical power system(s) with electric machine(s)18 Jun 2026US 2026/0168389 A1Rtx Corporation
Most cited
By later US patents
- Airplane powered by vehicular motor85US 4,605,185 A1986
- Embedded electric machine53US 10,487,839 B2General Electric Company · 2019
- Electrical architecture for a rotary wing aircraft with a hybrid power plant48US 8,757,542 B2Airbus Helicopters · 2014
- Construction and operation of electric or hybrid aircraft44US 10,322,824 B1H55 SA · 2019
- Hybrid powertrain system43US 9,174,741 B2McMaster University · 2015