B64D 37/20
Emptying systems
B64D37/20 (Emptying systems) appears on 115 US grants and 131 published applications in this corpus.
Search patents in B64D- Granted patents
- 115
- Published applications
- 131
- Assignees
- 73
- Inventors
- 315
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 4 |
| 2006 | 4 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 5 |
| 2011 | 1 | 4 |
| 2012 | 3 | 3 |
| 2013 | 3 | 7 |
| 2014 | 5 | 6 |
| 2015 | 6 | 9 |
| 2016 | 4 | 11 |
| 2017 | 7 | 5 |
| 2018 | 6 | 9 |
| 2019 | 4 | 4 |
| 2020 | 7 | 9 |
| 2021 | 8 | 6 |
| 2022 | 4 | 3 |
| 2023 | 5 | 8 |
| 2024 | 7 | 13 |
| 2025 | 7 | 10 |
| 2026 | 9 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Configuration for a LH2 fuel cell aircraft with distributed systems25 Aug 2026US 12,715,602 B2The Boeing Company
- Aircraft fuel storage system25 Aug 2026US 12,715,604 B2Airbus Operations GmbH
- Pump system18 Aug 2026US 12,709,404 B2Airbus Operations GmbH
- Drain provided with a disengagement device26 May 2026US 12,638,101 B2Safran Aerosystems
- Aircraft21 Apr 2026US 12,606,315 B2Honda Motor Co., Ltd.
- Dihydrogen tank system for an aircraft having a turbine1 Oct 2026US 2026/0302976 A1Airbus Operations GmbH
- Fuel system for supplying an aircraft with hydrogen, method and aircraft24 Sep 2026US 2026/0287120 A1MTU Aero Engines AG
- Hydrogen fuel supply system and aircraft17 Sep 2026US 2026/0274431 A1Kawasaki Jukogyo Kabushiki Kaisha
- Hydrogen aircraft17 Sep 2026US 2026/0274432 A1Kawasaki Jukogyo Kabushiki Kaisha
- Methods and systems for venting a fuel tank on a blended wing body aircraft13 Aug 2026US 2026/0233850 A1JetZero, Inc.
Most cited
By later US patents
- Independent power generation in aircraft68US 8,657,227 B1The Boeing Company · 2014
- Independent power generation in aircraft63US 8,950,703 B2The Boeing Company · 2015
- System and method for scavenging ullage from center wing tanks in an airplane62US 8,602,362 B2Simmonds Precision Products, Inc. · 2013
- Uninterruptible oil supply system51US 6,463,819 B1Pratt & Whitney Canada Corp. · 2002
- Anti-vortex baffle assembly with filter for a tank34US 6,014,987 ALockheed Martin Corporation · 2000