B64D 2041/005
Fuel cells
Official title: {Fuel cells}
B64D2041/005 (Fuel cells) appears on 344 US grants and 483 published applications in this corpus.
Search patents in B64D- Granted patents
- 344
- Published applications
- 483
- Assignees
- 135
- Inventors
- 728
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 3 | 4 |
| 2004 | 1 | 11 |
| 2005 | 3 | 3 |
| 2006 | 3 | 6 |
| 2007 | 5 | 9 |
| 2008 | 2 | 19 |
| 2009 | 9 | 6 |
| 2010 | 7 | 11 |
| 2011 | 10 | 11 |
| 2012 | 8 | 14 |
| 2013 | 8 | 19 |
| 2014 | 15 | 13 |
| 2015 | 9 | 21 |
| 2016 | 8 | 18 |
| 2017 | 17 | 17 |
| 2018 | 14 | 24 |
| 2019 | 18 | 9 |
| 2020 | 14 | 25 |
| 2021 | 21 | 24 |
| 2022 | 17 | 43 |
| 2023 | 35 | 57 |
| 2024 | 47 | 47 |
| 2025 | 39 | 43 |
| 2026 | 24 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy conversion arrangement, energy system and aircraft comprising same8 Sep 2026US 12,729,005 B2Airbus Operations GmbH
- Configuration for a LH2 fuel cell aircraft with distributed systems25 Aug 2026US 12,715,602 B2The Boeing Company
- Method of nacelle air heat exchanger integration for a hydrogen fueled fuel cell powered aircraft25 Aug 2026US 12,716,394 B2The Boeing Company
- Blended wing body aircraft with a fuel cell and method of use28 Jul 2026US 12,692,000 B2JetZero, Inc.
- Cryogenic fuel boil off powered fuel cell14 Jul 2026US 12,679,553 B2Rtx Corporation
- Propulsion and electrical system for an aircraft including a fuel cell and a turbine engine1 Oct 2026US 2026/0296655 A1GE AVIO S.r.I.
- Energy conversion arrangement with pre-heating duct for reactant gas, as well as energy system and apparatus comprising same27 Aug 2026US 2026/0253917 A1Airbus Operations GmbH
- Safety device, vehicle component equipped therewith and aircraft13 Aug 2026US 2026/0233044 A1Airbus SAS
- Hydrogen Fueled Dual Fuselage Aircraft23 Jul 2026US 2026/0208864 A1Joby Aero, Inc.
- Fuel Cells for Aircraft having Extensible Fitting Regions2 Jul 2026US 2026/0184433 A1Response Technologies, LLC
Most cited
By later US patents
- Energy supply unit on board an aircraft113US 6,296,957 B1Xcellsis GmbH · 2001
- Combined fuel cell aircraft auxiliary power unit and environmental control system90US 7,380,749 B2The Boeing Company · 2008
- Hybrid solid oxide fuel cell aircraft auxiliary power unit87US 6,834,831 B2The Boeing Company · 2004
- High altitude, long duration surveillance system78US 5,518,205 ARockwell International Corporation · 1996
- Aircraft propulsion system using air liquefaction and storage72US 5,106,035 AAurora Flight Sciences Corporation · 1992