F02M 21/023
Valves
Official title: {Valves; Pressure or flow regulators in the fuel supply or return system}
F02M21/023 (Valves) appears on 741 US grants and 668 published applications in this corpus.
Search patents in F02M- Granted patents
- 741
- Published applications
- 668
- Assignees
- 323
- Inventors
- 1,452
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 20 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 13 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 15 | 0 |
| 2001 | 9 | 1 |
| 2002 | 12 | 17 |
| 2003 | 14 | 11 |
| 2004 | 9 | 17 |
| 2005 | 11 | 14 |
| 2006 | 10 | 14 |
| 2007 | 17 | 8 |
| 2008 | 11 | 13 |
| 2009 | 8 | 29 |
| 2010 | 13 | 20 |
| 2011 | 13 | 20 |
| 2012 | 13 | 11 |
| 2013 | 14 | 24 |
| 2014 | 15 | 30 |
| 2015 | 21 | 45 |
| 2016 | 28 | 45 |
| 2017 | 32 | 39 |
| 2018 | 30 | 34 |
| 2019 | 33 | 42 |
| 2020 | 33 | 30 |
| 2021 | 27 | 21 |
| 2022 | 26 | 26 |
| 2023 | 34 | 37 |
| 2024 | 35 | 45 |
| 2025 | 34 | 43 |
| 2026 | 23 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vented methane gas mitigation system with failure detection6 Oct 2026US 12,753,731 B1Caterpillar Inc.
- Controller for a fuel supply system29 Sep 2026US 12,747,709 B2Toyota Jidosha Kabushiki Kaisha
- Systems and methods for supplying gaseous ammonia to serially-connected ammonia cracking units1 Sep 2026US 12,723,559 B2First Ammonia Motors, Inc.
- Fuel delivery assembly1 Sep 2026US 12,723,560 B1Caterpillar Inc.
- Systems and method for vehicle thermal management28 Jul 2026US 12,692,812 B2
- Hydrogen Supply System for an Internal Combustion Engine8 Oct 2026US 2026/0309107 A1Robert Bosch GmbH
- Fuel supply system, and vehicle1 Oct 2026US 2026/0298160 A1Isuzu Motors Limited
- Method for operating a tank unit, and tank unit for storing a gaseous fuel24 Sep 2026US 2026/0286918 A1Robert Bosch GmbH
- Flow control method, system and apparatus24 Sep 2026US 2026/0286919 A1G. W. Lisk Company, Inc.
- Systems and methods for stationary power generation using hydrogen and ammonia co-fuels17 Sep 2026US 2026/0275942 A1First Ammonia Motors, Inc.
Most cited
By later US patents
- Apparatus and methods for providing natural gas to multiple engines disposed upon multiple carriers166US 9,187,982 B2Baker Hughes Incorporated · 2015
- LNG delivery system for gas powered vehicles117US 5,127,230 AMinnesota Valley Engineering, Inc. · 1992
- Control module for natural gas fuel supply for a vehicle90US 6,041,762 AImpco Technologies, Inc. · 2000
- Fuel system for a vehicle77US 9,694,671 B2Oshkosh Corporation · 2017
- Internal combustion engines76US 5,531,199 AUnited Fuels Limited · 1996