F02M 21/0257
Details of the valve closing elements
Official title: {Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages}
F02M21/0257 (Details of the valve closing elements) appears on 331 US grants and 326 published applications in this corpus.
Search patents in F02M- Granted patents
- 331
- Published applications
- 326
- Assignees
- 156
- Inventors
- 615
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 10 |
| 2002 | 14 | 5 |
| 2003 | 9 | 3 |
| 2004 | 6 | 8 |
| 2005 | 2 | 11 |
| 2006 | 5 | 9 |
| 2007 | 8 | 9 |
| 2008 | 7 | 6 |
| 2009 | 5 | 8 |
| 2010 | 5 | 7 |
| 2011 | 5 | 9 |
| 2012 | 7 | 10 |
| 2013 | 5 | 13 |
| 2014 | 12 | 18 |
| 2015 | 9 | 25 |
| 2016 | 15 | 18 |
| 2017 | 20 | 14 |
| 2018 | 18 | 17 |
| 2019 | 21 | 11 |
| 2020 | 11 | 15 |
| 2021 | 9 | 4 |
| 2022 | 8 | 4 |
| 2023 | 10 | 19 |
| 2024 | 16 | 25 |
| 2025 | 19 | 28 |
| 2026 | 6 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Injector for gaseous fuel8 Sep 2026US 12,729,660 B2Phinia Delphi Luxembourg Sarl
- Fuel delivery assembly1 Sep 2026US 12,723,560 B1Caterpillar Inc.
- Fuel injector28 Jul 2026US 12,692,827 B2Phinia Delphi Luxembourg Sarl
- Injector for injecting fuel30 Jun 2026US 12,669,100 B2Liebherr-Components Deggendorf GmbH
- Gas valve with outwardly-opening valve closure element23 Jun 2026US 12,663,083 B2Robert Bosch GmbH
- Gas fuel injection valve17 Sep 2026US 2026/0275943 A1Denso Corporation
- Gas fuel injection valve and fuel injection system17 Sep 2026US 2026/0275944 A1Denso Corporation
- Gas valve with outwardly-opening valve closure element10 Sep 2026US 2026/0266377 A1Robert Bosch GmbH
- Fuel injector for direct injection of gaseous fuel27 Aug 2026US 2026/0251106 A9Phinia Delphi Luxembourg Sarl
- Fuel injector for direct injection of gaseous fuel30 Jul 2026US 2026/0218673 A1Phinia Delphi Luxembourg Sarl
Most cited
By later US patents
- Multifuel storage, metering and ignition system92US 7,628,137 B12009
- Internal combustion engines76US 5,531,199 AUnited Fuels Limited · 1996
- Gaseous and liquid fuel injector73US 6,073,862 AWestport Research Inc. · 2000
- Intensifier-injector for gaseous fuel for positive displacement engines67US 5,315,973 AThe University of British Columbia · 1994
- Measuring valve for dosing liquids or gases64US 4,725,002 ARobert Bosch GmbH · 1988