F02M 59/442
Means preventing fuel leakage around pump plunger
Official title: {means preventing fuel leakage around pump plunger, e.g. fluid barriers}
F02M59/442 (Means preventing fuel leakage around pump plunger) appears on 132 US grants and 126 published applications in this corpus.
Search patents in F02M- Granted patents
- 132
- Published applications
- 126
- Assignees
- 70
- Inventors
- 320
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 3 |
| 2003 | 4 | 7 |
| 2004 | 5 | 7 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 2 | 3 |
| 2008 | 0 | 6 |
| 2009 | 6 | 8 |
| 2010 | 6 | 2 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 4 | 1 |
| 2014 | 3 | 2 |
| 2015 | 1 | 9 |
| 2016 | 1 | 8 |
| 2017 | 2 | 13 |
| 2018 | 9 | 18 |
| 2019 | 16 | 6 |
| 2020 | 13 | 10 |
| 2021 | 9 | 3 |
| 2022 | 5 | 3 |
| 2023 | 3 | 5 |
| 2024 | 2 | 1 |
| 2025 | 4 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel pump25 Nov 2025US 12,480,465 B2Hitachi Astemo, Ltd.
- Fuel feed for motor-driven high pressure fuel pump28 Oct 2025US 12,454,930 B2Stanadyne Operating Company LLC
- Fuel pump5 Aug 2025US 12,378,935 B2Phinia Jersey Holdings LLC
- Rotatable bypass assembly for fuel system10 Jun 2025US 12,326,129 B1S & S Diesel Motorsport LLC
- Fuel pump11 Jun 2024US 12,006,901 B2Hitachi Astemo, Ltd.
- High Pressure Fuel Pump With Configuration To Mitigate Cavitation9 Jul 2026US 2026/0194033 A1
- Fuel feed for motor-driven high pressure fuel pump10 Apr 2025US 2025/0116247 A1Stanadyne, Inc.
- Fuel pump4 Jan 2024US 2024/0003322 A1Hitachi Astemo, Ltd.
- Fuel pump30 Nov 2023US 2023/0383716 A1Phinia Jersey Holdings LLC
- Gasoline direct injection fuel pump with isolated plunger sleeve28 Sep 2023US 2023/0304462 A1Delphi Technologies IP Limited
Most cited
By later US patents
- Common rail fuel injection system62US 5,230,613 ADiesel Technology Company · 1993
- Mechanism for restraining fuel pressure pulsation and high pressure fuel supply pump of internal combustion engine with such mechanism42US 8,393,881 B2Hitachi, Ltd. · 2013
- High pressure fuel supply pump for internal combustion engine33US 6,631,706 B1Hitachi Car Engineering Co., Ltd. · 2003
- Sealing arrangement31US 7,959,159 B2ElringKlinger AG · 2011
- High-pressure fuel-feed pump28US 5,567,134 ANippondenso Co., Ltd. · 1996