F02D 2041/225
Leakage detection
Official title: {Leakage detection}
F02D2041/225 (Leakage detection) appears on 264 US grants and 261 published applications in this corpus.
Search patents in F02D- Granted patents
- 264
- Published applications
- 261
- Assignees
- 106
- Inventors
- 572
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 6 | 5 |
| 2003 | 5 | 3 |
| 2004 | 3 | 4 |
| 2005 | 4 | 3 |
| 2006 | 4 | 4 |
| 2007 | 4 | 5 |
| 2008 | 7 | 13 |
| 2009 | 6 | 11 |
| 2010 | 9 | 8 |
| 2011 | 6 | 3 |
| 2012 | 5 | 6 |
| 2013 | 4 | 11 |
| 2014 | 6 | 10 |
| 2015 | 8 | 17 |
| 2016 | 14 | 18 |
| 2017 | 14 | 23 |
| 2018 | 21 | 12 |
| 2019 | 22 | 21 |
| 2020 | 7 | 20 |
| 2021 | 23 | 15 |
| 2022 | 23 | 18 |
| 2023 | 15 | 9 |
| 2024 | 9 | 5 |
| 2025 | 5 | 8 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nitrogen compression system for leakage test on gas pipeline used for engine and vessel including the same28 Apr 2026US 12,613,004 B2Daewoo Shipbuilding & Marine Engineering Co., Ltd.
- Controller for internal combustion engine24 Mar 2026US 12,584,449 B2Toyota Jidosha Kabushiki Kaisha
- Method of fuel injector management based on cylinder knock detection and vehicle including the same17 Mar 2026US 12,577,921 B1GM Global Technology Operations LLC
- Fuel system leakage anomaly detection device and fuel system leakage anomaly detection method for internal combustion engine17 Feb 2026US 12,553,408 B2Toyota Jidosha Kabushiki Kaisha
- Systems and methods of detecting fluid release10 Feb 2026US 12,546,269 B2TORC Robotics, Inc.
- Non-intrusive fueling event measurement for fueling systems8 Oct 2026US 2026/0309103 A1Cummins-Scania HPCR System, LLC
- Fuel leakage diagnostic and fuel system diagnostic management apparatuses, methods, and systems1 Oct 2026US 2026/0298171 A1Cummins-Scania HPCR System, LLC
- Engine controller2 Apr 2026US 2026/0092570 A1Toyota Jidosha Kabushiki Kaisha
- Controller19 Mar 2026US 2026/0078706 A1Toyota Jidosha Kabushiki Kaisha
- Method of fuel injector management based on cylinder knock detection and vehicle including the same19 Mar 2026US 2026/0078711 A1GM Global Technology Operations LLC
Most cited
By later US patents
- System and methods for electronic control of an accumulator fuel system101US 5,678,521 ACummins Engine Company, Inc. · 1997
- Device for detecting leakage in a fuel supply66US 5,715,786 ARobert Bosch GmbH · 1998
- Variable displacement high pressure pump for fuel injection systems64US 5,404,855 ACummins Engine Company, Inc. · 1995
- Fuel feeding system for internal combustion engine59US 5,598,817 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997
- Process for determining a fuel-injection-related parameter for an internal-combustion engine with a common-rail injection system59US 6,088,647 ADaimlerChrysler AG · 2000