Y02T 90/40
Application of hydrogen technology to transportation
Official title: Application of hydrogen technology to transportation, e.g. using fuel cells
Y02T90/40 (Application of hydrogen technology to transportation) appears on 4,937 US grants and 6,221 published applications in this corpus.
Search patents in Y02T- Granted patents
- 4,937
- Published applications
- 6,221
- Assignees
- 1,168
- Inventors
- 8,494
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 15 | 0 |
| 1998 | 16 | 0 |
| 1999 | 23 | 0 |
| 2000 | 31 | 0 |
| 2001 | 54 | 37 |
| 2002 | 69 | 133 |
| 2003 | 89 | 172 |
| 2004 | 84 | 183 |
| 2005 | 97 | 176 |
| 2006 | 106 | 203 |
| 2007 | 105 | 210 |
| 2008 | 106 | 235 |
| 2009 | 121 | 255 |
| 2010 | 154 | 296 |
| 2011 | 189 | 218 |
| 2012 | 196 | 212 |
| 2013 | 202 | 232 |
| 2014 | 229 | 259 |
| 2015 | 221 | 350 |
| 2016 | 204 | 468 |
| 2017 | 308 | 364 |
| 2018 | 304 | 374 |
| 2019 | 356 | 286 |
| 2020 | 308 | 310 |
| 2021 | 287 | 318 |
| 2022 | 277 | 271 |
| 2023 | 263 | 301 |
| 2024 | 187 | 144 |
| 2025 | 181 | 131 |
| 2026 | 102 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anti-stall system with a fuel cell22 Sep 2026US 12,742,425 B2General Electric Company
- Energy conversion arrangement, energy system and aircraft comprising same8 Sep 2026US 12,729,005 B2Airbus Operations GmbH
- Methods and systems for managing and controlling emissions in a hybrid system25 Aug 2026US 12,715,425 B2Cummins Inc.
- Method of nacelle air heat exchanger integration for a hydrogen fueled fuel cell powered aircraft25 Aug 2026US 12,716,394 B2The Boeing Company
- Fuel supply system for hydrogen aircraft, and tank internal pressure adjustment method25 Aug 2026US 12,716,551 B2Kawasaki Jukogyo Kabushiki Kaisha
- Wing tank vaporizer for solid oxide fuel cell on unmanned aircraft27 Aug 2026US 2026/0250009 A1Lockheed Martin Corporation
- Residual water drain system and method of fuel cell vehicle20 Aug 2026US 2026/0245927 A1Hyundai Motor Company
- Fuel cell device and vehicle20 Aug 2026US 2026/0245940 A1Honda Motor Co., Ltd.
- Control system for fuel cell watercraft6 Aug 2026US 2026/0225496 A1Suzuki Motor Corporation
- Fuel cell watercraft6 Aug 2026US 2026/0225702 A1Suzuki Motor Corporation
Most cited
By later US patents
- Control system and method for electric vehicle349US 6,885,920 B2Oshkosh Truck Corporation · 2005
- System and method for braking in an electric vehicle298US 7,848,857 B2Oshkosh Corporation · 2010
- System and method for minimizing energy consumption in hybrid vehicles285US 7,013,205 B1International Business Machines Corporation · 2006
- Failure mode operation for an electric vehicle285US 7,302,320 B2Oshkosh Truck Corporation · 2007
- Failure mode operation for an electric vehicle257US 8,000,850 B2Oshkosh Truck Corporation · 2011