F02P 5/1523
With particular laws of return to advance
Official title: {with particular laws of return to advance, e.g. step by step, differing from the laws of retard}
F02P5/1523 (With particular laws of return to advance) appears on 114 US grants and 63 published applications in this corpus.
Search patents in F02P- Granted patents
- 114
- Published applications
- 63
- Assignees
- 53
- Inventors
- 264
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 2 | 13 |
| 2005 | 3 | 4 |
| 2006 | 11 | 3 |
| 2007 | 5 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 3 | 5 |
| 2017 | 2 | 1 |
| 2018 | 3 | 4 |
| 2019 | 5 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 2 |
| 2022 | 4 | 4 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Knocking control method for internal combustion engine and knocking control device7 Jul 2026US 12,674,435 B2Nissan Motor Co., Ltd.
- Engine knock control system for carburetor engines4 Jul 2023US 11,692,523 B2
- System and method for independently controlling firing of individual internal combustion engine cylinders at least partly with engine position sensor20 Jun 2023US 11,680,550 B2
- Apparatus of controlling vehicle and method thereof27 Dec 2022US 11,536,207 B2Hyundai Motor Company
- Ignition timing controller and ignition timing control method for multi-cylinder internal combustion engine27 Sep 2022US 11,454,204 B2Toyota Jidosha Kabushiki Kaisha
- Knocking control method for internal combustion engine and knocking control device29 May 2025US 2025/0172116 A1Nissan Motor Co., Ltd.
- System and Method for Independently Controlling Firing of Individual Internal Combustion Engine Cylinders at least partly with Engine Position Sensor30 Mar 2023US 2023/0099571 A1
- Ignition timing controller and ignition timing control method for multi-cylinder internal combustion engine12 May 2022US 2022/0145843 A1Toyota Jidosha Kabushiki Kaisha
- Apparatus of controlling vehicle and method thereof24 Feb 2022US 2022/0056859 A1Hyundai Motor Company
- Engine knock control system for carburetor engines3 Feb 2022US 2022/0034289 A1
Most cited
By later US patents
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Closed-loop ignition timing control41US 5,896,842 AGeneral Motors Corporation · 1999
- Optimal wide open throttle air/fuel ratio control39US 7,137,382 B2Visteon Global Technologies, Inc. · 2006
- Closed-loop individual cylinder A/F ratio balancing35US 7,021,287 B2Visteon Global Technologies, Inc. · 2006
- Abnormal combustion detection apparatus and method for internal combustion engine34US 6,105,552 AToyota Jidosha Kabushiki Kaisha · 2000