B64C 31/00
Aircraft intended to be sustained without power plant
Official title: Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft
B64C31/00 (Aircraft intended to be sustained without power plant) appears on 369 US grants and 317 published applications in this corpus.
Search patents in B64C- Granted patents
- 369
- Published applications
- 317
- Assignees
- 145
- Inventors
- 598
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 13 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 1 |
| 2002 | 5 | 8 |
| 2003 | 6 | 10 |
| 2004 | 5 | 10 |
| 2005 | 5 | 12 |
| 2006 | 11 | 8 |
| 2007 | 7 | 9 |
| 2008 | 2 | 2 |
| 2009 | 2 | 10 |
| 2010 | 3 | 8 |
| 2011 | 3 | 6 |
| 2012 | 9 | 11 |
| 2013 | 8 | 6 |
| 2014 | 9 | 10 |
| 2015 | 6 | 19 |
| 2016 | 6 | 12 |
| 2017 | 20 | 17 |
| 2018 | 13 | 19 |
| 2019 | 9 | 24 |
| 2020 | 22 | 25 |
| 2021 | 17 | 23 |
| 2022 | 20 | 15 |
| 2023 | 21 | 15 |
| 2024 | 12 | 12 |
| 2025 | 13 | 16 |
| 2026 | 6 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Human-powered aircraft8 Sep 2026US 12,728,991 B2Costruzioni E Servizi S.R.L.S.
- Control device9 Jun 2026US 12,649,573 B2Toyota Jidosha Kabushiki Kaisha
- Aeromechanical line climber14 Apr 2026US 12,600,473 B1United States of America as represented by the Administrator of NASA
- Aerial delivery vehicle17 Feb 2026US 12,552,531 B2Freedom Flight Works, Inc.
- Method for landing a kite system, and kite system17 Feb 2026US 12,552,532 B2SkySails Power GmbH
- System and Method for Monitoring Ultralight Aircraft to Detect Anomalies1 Oct 2026US 2026/0296670 A1
- Aircraft System and Launching Method and Apparatus3 Sep 2026US 2026/0257790 A1Fuchszeug B.V.
- Field treatment using powered parafoil aircraft6 Aug 2026US 2026/0225715 A1Precision AI Inc.
- Aerial delivery vehicle25 Jun 2026US 2026/0175974 A1Freedom Flight Works, Inc.
- Aircraft survival kit glider25 Jun 2026US 2026/0175975 A1Rockwell Collins, Inc.
Most cited
By later US patents
- Scavenger energy converter system its new applications and its control systems239US 6,327,994 B12001
- Water-mist blower cooling system and its new applications215US 6,293,121 B12001
- Vertical take-off and landing aircraft149US 6,293,491 B12001
- Organism growth prediction system using drone-captured images94US 9,984,455 B1Hana Resources, Inc. · 2018
- Ultralight aircraft with freely rotating wing80US 4,596,368 A1986