F02D 2041/2089
Detecting open circuits
Official title: {detecting open circuits}
F02D2041/2089 (Detecting open circuits) appears on 52 US grants and 45 published applications in this corpus.
Search patents in F02D- Granted patents
- 52
- Published applications
- 45
- Assignees
- 40
- Inventors
- 141
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 2 | 3 |
| 2008 | 1 | 5 |
| 2009 | 2 | 1 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 4 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 3 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 5 |
| 2022 | 2 | 2 |
| 2023 | 3 | 0 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Purge valve driving control device3 Jun 2025US 12,322,544 B2Bosch Corporation
- Method and apparatus for diagnosing an exhaust gas sensor4 Feb 2025US 12,216,180 B2Vitesco Technologies GmbH
- Fuel injector drive system16 Jan 2024US 11,873,776 B1Caterpillar Inc.
- Load drive device, engine system25 Jul 2023US 11,708,801 B2Hitachi Astemo, Ltd.
- Arrangement to transmit data from an ECU to a fuel injector13 Jun 2023US 11,674,470 B2Delphi Automative Systems Luxembourg SA
- Purge valve driving control device1 Aug 2024US 2024/0258005 A1Bosch Corporation
- System and method for detecting a failure in a fluid path of a fluid system7 Mar 2024US 2024/0077007 A1Novares France
- Fuel injector drive system8 Feb 2024US 2024/0044298 A1Caterpillar Inc.
- Electromagnetic valve driving device31 Mar 2022US 2022/0099059 A1Hitachi Astemo, Ltd.
- Load Drive Device, Engine System17 Feb 2022US 2022/0049669 A1Hitachi Astemo, Ltd.
Most cited
By later US patents
- Fault detection circuit50US 4,736,267 AMotorola, Inc. · 1988
- Fuel injector failure detection circuit33US 5,469,825 AChrysler Corporation · 1995
- Method of abnormality detection of oxygen concentration sensor20US 4,777,922 AHonda Giken Kogyo Kabushiki Kaisha · 1988
- Injector diagnosis system17US 4,989,150 AFuji Jukogyo Kabushiki Kaisha · 1991
- Electrical circuit, particularly an electronic power circuit for motor vehicle injection systems, with a function for the detection and diagnosis of faults, and the related method17US 5,173,832 AMarelli Autronica S.p.A. · 1992