F02M 25/0809
Judging failure of purge control system
Official title: {Judging failure of purge control system}
F02M25/0809 (Judging failure of purge control system) appears on 1,183 US grants and 914 published applications in this corpus.
Search patents in F02M- Granted patents
- 1,183
- Published applications
- 914
- Assignees
- 173
- Inventors
- 1,252
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 13 | 0 |
| 1993 | 29 | 0 |
| 1994 | 25 | 0 |
| 1995 | 36 | 0 |
| 1996 | 26 | 0 |
| 1997 | 29 | 0 |
| 1998 | 27 | 0 |
| 1999 | 20 | 0 |
| 2000 | 30 | 0 |
| 2001 | 41 | 19 |
| 2002 | 38 | 35 |
| 2003 | 40 | 50 |
| 2004 | 45 | 49 |
| 2005 | 53 | 53 |
| 2006 | 59 | 38 |
| 2007 | 34 | 32 |
| 2008 | 30 | 8 |
| 2009 | 19 | 34 |
| 2010 | 10 | 15 |
| 2011 | 15 | 24 |
| 2012 | 21 | 18 |
| 2013 | 23 | 42 |
| 2014 | 25 | 54 |
| 2015 | 35 | 68 |
| 2016 | 60 | 51 |
| 2017 | 70 | 58 |
| 2018 | 50 | 50 |
| 2019 | 50 | 48 |
| 2020 | 53 | 54 |
| 2021 | 56 | 21 |
| 2022 | 35 | 32 |
| 2023 | 42 | 29 |
| 2024 | 21 | 15 |
| 2025 | 12 | 13 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system for diagnosing evaporative emissions control system18 Aug 2026US 12,710,024 B2Ford Global Technologies, LLC
- Malfunction diagnosis device for leakage diagnosis device28 Jul 2026US 12,692,829 B2Denso Corporation
- Abnormality determination method for purge system and abnormality determination system for purge system14 Jul 2026US 12,680,521 B2Nissan Motor Co., Ltd.
- Evaporative emissions leak check module with VOC measurement2 Jun 2026US 12,644,429 B2Stoneridge Asia Pacific Electronics (Suzhou) Co. Ltd.
- Flexible fluid connection for evaporative emissions system12 May 2026US 12,624,674 B2Stoneridge Control Devices, Inc.
- Evaporative emission leak detection system and detection method for engines1 Oct 2026US 2026/0298181 A1Difite (Suzhou) Co., Ltd.
- Locating a fuel leak in a fuel system30 Apr 2026US 2026/0117730 A1OPmobility C-Power Belgium Research
- Method and system for diagnosing evaporative emissions control system12 Mar 2026US 2026/0071598 A1Ford Global Technologies, LLC
- Evaporative emissions leak detection module26 Feb 2026US 2026/0056084 A1Stoneridge Asia Pacific Electronics (Suzhou) Co. Ltd.
- Engine system provided with a sensor to identify leakage from a circuit for the recovery and recirculation of oil vapors4 Dec 2025US 2025/0369821 A1Ferrari S.P. A.
Most cited
By later US patents
- Positive pressure canister purge system integrity confirmation120US 5,146,902 ASiemens Automotive Corporation · 1992
- System and method for detecting leaks in a vapor handling system108US 5,263,462 AGeneral Motors Corporation · 1993
- Tank-venting system for a motor vehicle and method for checking the operability thereof88US 5,193,512 ARobert Bosch GmbH · 1993
- Diagnostic system for canister purge system85US 5,191,870 ASiemens Automotive Corporation · 1993
- Device for detecting malfunction of fuel evaporative purge system84US 4,949,695 AToyota Jidosha Kabushiki Kaisha · 1990