F01L 2800/12
Fail safe operation
F01L2800/12 (Fail safe operation) appears on 113 US grants and 109 published applications in this corpus.
Search patents in F01L- Granted patents
- 113
- Published applications
- 109
- Assignees
- 60
- Inventors
- 254
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 2 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 4 | 15 |
| 2006 | 8 | 6 |
| 2007 | 5 | 4 |
| 2008 | 6 | 2 |
| 2009 | 4 | 7 |
| 2010 | 6 | 4 |
| 2011 | 4 | 11 |
| 2012 | 6 | 3 |
| 2013 | 4 | 5 |
| 2014 | 4 | 1 |
| 2015 | 4 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 6 |
| 2018 | 4 | 6 |
| 2019 | 6 | 4 |
| 2020 | 6 | 12 |
| 2021 | 7 | 4 |
| 2022 | 10 | 6 |
| 2023 | 7 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control device for hydraulic control valve28 Apr 2026US 12,612,912 B2Hitachi Astemo, Ltd.
- Camshaft adjuster with reset function25 Feb 2025US 12,234,754 B2Schaeffler Technologies AG & Co. KG
- Exhaust valve, exhaust valve assembly and exhaust valve system for two-stroke internal combustion engines, two-stroke internal combustion engine having same and method for cleaning an exhaust valve25 Jun 2024US 12,018,627 B2BRP US Inc.
- Control method and control system for continuously variable valve lift mechanism and vehicle19 Sep 2023US 11,761,360 B2Great Wall Motor Company Limited
- Method for verifying CVVD location learning result and CVVD system thereof12 Sep 2023US 11,753,971 B2Hyundai Motor Company
- System and method for distinguishing between a timing chain jump and a lock-up of an actuator in a variable valve timing device2 Jul 2026US 2026/0185468 A1Vitesco Technologies GmbH
- Method for managing a starting phase of a hybrid vehicle5 Feb 2026US 2026/0034992 A1Schaeffler Technologies AG & Co. KG
- Control Device for Hydraulic Control Valve27 Mar 2025US 2025/0101979 A1Hitachi Astemo, Ltd.
- Camshaft adjuster with reset function26 Dec 2024US 2024/0426229 A1Schaeffler Technologies AG & Co. KG
- Exhaust valve, exhaust valve assembly and exhaust valve system for two-stroke internal combustion engines, two-stroke internal combustion engine having same and method for cleaning an exhaust valve6 Oct 2022US 2022/0316419 A1BRP US Inc.
Most cited
By later US patents
- Variable lost motion valve actuator and method48US 6,085,705 ADiesel Engine Retarders, Inc. · 2000
- Method for effectively diagnosing the operational state of a variable valve lift device47US 7,063,057 B1Delphi Technologies, Inc. · 2006
- Solenoid diagnostic systems for cylinder deactivation control33US 7,908,913 B2GM Global Technology Operations LLC · 2011
- Computer readable storage medium for use with engine having variable valve actuator during degradation28US 6,994,061 B2Ford Global Technologies, LLC · 2006
- Diagnostic apparatus for variable valve control system28US 7,146,851 B2Denso Corporation · 2006