B64D 31/00
Power plant control systems
Official title: Power plant control systems; Arrangement of power plant control systems in aircraft
B64D31/00 (Power plant control systems) appears on 2,075 US grants and 2,491 published applications in this corpus.
Search patents in B64D- Granted patents
- 2,075
- Published applications
- 2,491
- Assignees
- 442
- Inventors
- 3,314
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 3 |
| 2003 | 6 | 11 |
| 2004 | 11 | 11 |
| 2005 | 10 | 7 |
| 2006 | 6 | 6 |
| 2007 | 2 | 1 |
| 2008 | 2 | 11 |
| 2009 | 2 | 14 |
| 2010 | 3 | 24 |
| 2011 | 10 | 20 |
| 2012 | 12 | 13 |
| 2013 | 19 | 28 |
| 2014 | 24 | 46 |
| 2015 | 50 | 59 |
| 2016 | 44 | 80 |
| 2017 | 71 | 86 |
| 2018 | 87 | 160 |
| 2019 | 106 | 154 |
| 2020 | 139 | 251 |
| 2021 | 153 | 228 |
| 2022 | 198 | 281 |
| 2023 | 323 | 303 |
| 2024 | 263 | 248 |
| 2025 | 277 | 231 |
| 2026 | 179 | 214 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multicore hybrid-electric powertrain controller6 Oct 2026US 12,752,769 B2Pratt & Whitney Canada Corp.
- Controller of an electrical power supply circuit for electrical power supply of a superconducting motor, superconducting electrical power supply system of a motor, and aircraft comprising such a system6 Oct 2026US 12,756,342 B2Airbus SAS
- Providing energy in an aircraft using droop control29 Sep 2026US 12,747,025 B2Safran
- Anti-stall system with a fuel cell22 Sep 2026US 12,742,425 B2General Electric Company
- Selecting fuel for use in multi-fuel aircraft powerplant based on operation settings of powerplant performance characteristics22 Sep 2026US 12,742,426 B2Pratt & Whitney Canada Corp.
- System and method of rotor management8 Oct 2026US 2026/0307786 A1Beta Air, LLC
- Aircraft powerplant with shielded control system component(s)8 Oct 2026US 2026/0307815 A1Rtx Corporation
- Hybrid propulsion system cockpit interface8 Oct 2026US 2026/0310252 A1Rolls-Royce Deutschland Ltd & Co KG
- Systems and Methods to Determine Engine Operation During Taxiing of a Multi-Engine Aircraft8 Oct 2026US 2026/0311602 A1The Boeing Company
- Systems and methods for rotor assemblies and manufacturing thereof1 Oct 2026US 2026/0296634 A1Archer Aviation Inc.
Most cited
By later US patents
- Control apparatus336US 4,513,235 ABritish Aerospace Public Limited Company · 1985
- Personal hoverplane with four tiltmotors216US 6,655,631 B22003
- Unmanned aerial vehicle motor driving randomization and feedback for noise abatement102US 9,415,870 B1Amazon Technologies, Inc. · 2016
- Human interaction with unmanned aerial vehicles95US 9,459,620 B1Amazon Technologies, Inc. · 2016
- Aircraft with a plurality of propellers, a pipe structure for thereon holdable wings, for vertical take off and landing83US 4,982,914 A1991