G05D 1/04
Control of altitude or depth
G05D1/04 (Control of altitude or depth) appears on 1,834 US grants and 1,673 published applications in this corpus.
Search patents in G05D- Granted patents
- 1,834
- Published applications
- 1,673
- Assignees
- 557
- Inventors
- 3,141
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 19 | 0 |
| 1978 | 14 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 8 | 0 |
| 1982 | 11 | 0 |
| 1983 | 12 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 16 | 0 |
| 1987 | 9 | 0 |
| 1988 | 11 | 0 |
| 1989 | 22 | 0 |
| 1990 | 19 | 0 |
| 1991 | 18 | 0 |
| 1992 | 16 | 0 |
| 1993 | 7 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 18 | 0 |
| 1999 | 11 | 0 |
| 2000 | 18 | 0 |
| 2001 | 14 | 2 |
| 2002 | 10 | 12 |
| 2003 | 8 | 6 |
| 2004 | 9 | 9 |
| 2005 | 8 | 24 |
| 2006 | 7 | 10 |
| 2007 | 6 | 15 |
| 2008 | 15 | 35 |
| 2009 | 11 | 27 |
| 2010 | 24 | 41 |
| 2011 | 32 | 42 |
| 2012 | 36 | 37 |
| 2013 | 44 | 45 |
| 2014 | 58 | 42 |
| 2015 | 65 | 64 |
| 2016 | 77 | 125 |
| 2017 | 116 | 153 |
| 2018 | 114 | 160 |
| 2019 | 122 | 182 |
| 2020 | 146 | 169 |
| 2021 | 125 | 140 |
| 2022 | 119 | 129 |
| 2023 | 118 | 102 |
| 2024 | 120 | 62 |
| 2025 | 72 | 30 |
| 2026 | 31 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aircraft control systems and methods using sliding mode control and feedback linearization6 Oct 2026US 12,754,554 B2Bombardier Inc.
- Unmanned aerial vehicle (UAV) landing systems6 Oct 2026US 12,756,053 B2United Parcel Service of America, Inc.
- Aeronautical obstacle knowledge network8 Sep 2026US 12,729,021 B2The Boeing Company
- Multicopter with self-adjusting rotors8 Sep 2026US 12,730,452 B2Kitty Hawk Corporation
- Aerial vehicle powering off method and device, and aerial vehicle18 Aug 2026US 12,709,420 B2Sz Dji Technology Co., Ltd.
- Aircraft with pusher propeller25 Jun 2026US 2026/0178051 A1Wisk Aero LLC
- Systems and methods for uav docking18 Jun 2026US 2026/0167364 A1Sz Dji Technology Co., Ltd.
- System and method for safety enhancement of stationary drone mission operations18 Jun 2026US 2026/0169486 A1AT&T Intellectual Property I, L. P.
- Systems and methods providing assist-to-land and emergency land functions4 Jun 2026US 2026/0155051 A1Honeywell International Inc.
- System and method for tethered unmanned aerial vehicle takeoff, landing, and storage14 May 2026US 2026/0131903 A1Dragonfly Pictures, Inc.
Most cited
By later US patents
- Systems and methods for UAV docking417US 9,056,676 B1Sz Dji Technology Co., Ltd. · 2015
- Automated package delivery to a delivery receptacle324US 9,244,147 B1Google Inc. · 2016
- Method and device for preventing collisions with the ground for an aircraft263US 5,488,563 ADassault Electronique · 1996
- Unmanned aerial vehicle rooftop inspection system200US 9,609,288 B1Unmanned Innovation, Inc. · 2017
- Terrain awareness system184US 5,839,080 AAlliedSignal Inc. · 1998