B64D 35/021
For electric power plants
Official title: for electric power plants
B64D35/021 (For electric power plants) appears on 736 US grants and 937 published applications in this corpus.
Search patents in B64D- Granted patents
- 736
- Published applications
- 937
- Assignees
- 199
- Inventors
- 1,267
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 1 | 2 |
| 2012 | 1 | 3 |
| 2013 | 0 | 4 |
| 2014 | 3 | 13 |
| 2015 | 8 | 14 |
| 2016 | 13 | 20 |
| 2017 | 11 | 35 |
| 2018 | 24 | 63 |
| 2019 | 42 | 58 |
| 2020 | 49 | 113 |
| 2021 | 67 | 76 |
| 2022 | 57 | 102 |
| 2023 | 113 | 102 |
| 2024 | 123 | 143 |
| 2025 | 138 | 91 |
| 2026 | 81 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Clutch assembly for a hybrid-electric aircraft propulsion system29 Sep 2026US 12,747,028 B1Pratt & Whitney Canada Corp.
- Electric propulsion device with hollow shaft and cooling blades and support body with heat member on outer surface29 Sep 2026US 12,747,029 B2Mitsubishi Heavy Industries, Ltd.
- Aircraft powerplant with multi-circuit heat exchanger1 Sep 2026US 12,723,544 B1Rtx Corporation
- Battery and engine architecture for VTOL aircraft25 Aug 2026US 12,715,578 B2Archer Aviation Inc.
- Aeronautical propulsion system25 Aug 2026US 12,715,593 B2Evolito LTD
- Module for detecting a battery level of charge, assembly comprising the module, and aircraft comprising the assembly8 Oct 2026US 2026/0309789 A1Safran Electrical & Power
- Hybrid propulsion system cockpit interface8 Oct 2026US 2026/0310252 A1Rolls-Royce Deutschland Ltd & Co KG
- Systems and methods for rotor assemblies and manufacturing thereof1 Oct 2026US 2026/0296634 A1Archer Aviation Inc.
- Control assembly for aircraft propulsion systems24 Sep 2026US 2026/0285492 A1Pratt & Whitney Canada Corp.
- Drive system for an aircraft24 Sep 2026US 2026/0285495 A1
Most cited
By later US patents
- Vertical take-off and landing aircraft149US 6,293,491 B12001
- On-board redundant power system for unmanned aerial vehicles142US 9,376,208 B1Amazon Technologies, Inc. · 2016
- Marine hulls and drives97US 7,984,684 B22011
- Airplane powered by vehicular motor85US 4,605,185 A1986
- Fuel cell powered electric aircraft59US 6,568,633 B22003