B64D 31/02
Initiating means
B64D31/02 (Initiating means) appears on 1,134 US grants and 1,275 published applications in this corpus.
Search patents in B64D- Granted patents
- 1,134
- Published applications
- 1,275
- Assignees
- 287
- Inventors
- 2,017
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 1 |
| 2003 | 3 | 10 |
| 2004 | 9 | 6 |
| 2005 | 8 | 5 |
| 2006 | 4 | 3 |
| 2007 | 2 | 0 |
| 2008 | 1 | 9 |
| 2009 | 1 | 8 |
| 2010 | 2 | 15 |
| 2011 | 8 | 14 |
| 2012 | 8 | 5 |
| 2013 | 15 | 15 |
| 2014 | 14 | 26 |
| 2015 | 32 | 42 |
| 2016 | 26 | 52 |
| 2017 | 45 | 59 |
| 2018 | 66 | 101 |
| 2019 | 67 | 92 |
| 2020 | 89 | 138 |
| 2021 | 91 | 128 |
| 2022 | 104 | 133 |
| 2023 | 150 | 124 |
| 2024 | 127 | 124 |
| 2025 | 133 | 87 |
| 2026 | 82 | 77 |
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.
- 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.
- Aircraft hybrid electric propulsion and attitude controller15 Sep 2026US 12,735,191 B2Rtx Corporation
- Systems and methods for filling a fuel manifold of a gas turbine engine15 Sep 2026US 12,736,013 B2Pratt & Whitney Canada Corp.
- 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
- Aircraft engine takeoff and climb thrust control1 Oct 2026US 2026/0296659 A1General Electric Company
- Multi-drive unit powerplant for an aircraft1 Oct 2026US 2026/0296660 A1Pratt & Whitney Canada Corp.
- Method for assisting with propulsion by detecting a failure of a turboshaft engine of an aircraft1 Oct 2026US 2026/0296669 A1Safran Helicopter Engines
Most cited
By later US patents
- Control apparatus336US 4,513,235 ABritish Aerospace Public Limited Company · 1985
- 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
- Control apparatus70US 4,516,063 ABritish Aerospace Public Limited Company · 1985
- Control apparatus68US 4,032,757 ASmiths Industries Limited · 1977