F02M 31/042
Combustion air
Official title: {Combustion air}
F02M31/042 (Combustion air) appears on 143 US grants and 114 published applications in this corpus.
Search patents in F02M- Granted patents
- 143
- Published applications
- 114
- Assignees
- 90
- Inventors
- 347
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 3 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 2 | 4 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 5 |
| 2011 | 2 | 4 |
| 2012 | 1 | 3 |
| 2013 | 1 | 3 |
| 2014 | 4 | 7 |
| 2015 | 3 | 7 |
| 2016 | 5 | 9 |
| 2017 | 6 | 7 |
| 2018 | 9 | 13 |
| 2019 | 5 | 6 |
| 2020 | 8 | 7 |
| 2021 | 11 | 11 |
| 2022 | 11 | 5 |
| 2023 | 6 | 2 |
| 2024 | 1 | 2 |
| 2025 | 4 | 6 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Injection device and electric heating device for corresponding injection device7 Oct 2025US 12,435,687 B2Eberspacher catem GmbH & Co.KG
- Internal combustion engine with ventilation system for a crankcase9 Sep 2025US 12,410,737 B2Caterpillar Inc.
- Internal combustion engine with external circulation system and working method thereof27 May 2025US 12,313,015 B2Xi' An Jiaotong University
- System for selective liquid cooling of an air intake duct8 Apr 2025US 12,270,362 B1Fca US LLC
- Method for operating a supercharged internal combustion engine and device for providing combustion air for a supercharged internal combustion engine10 Sep 2024US 12,085,011 B2Liebherr Machines Bulle SA
- Fuel-based heating to enable mixing controlled combustion of small- molecule fuels10 Sep 2026US 2026/0266248 A1
- Intake temperature management systems for compression ignition of small molecule fuels10 Sep 2026US 2026/0266249 A1
- Engine system, fuel vaporization system, and method for vaporizing a secondary liquid fuel7 May 2026US 2026/0126022 A1Cummins Power Generation Inc.
- Engine device18 Sep 2025US 2025/0290471 A1Yanmar Holdings Co., Ltd.
- System for selective routing of a heated liquid to an air intake duct28 Aug 2025US 2025/0269715 A1Fca US LLC
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- High efficiency internal combustion steam engine49US 4,509,464 A1985
- Engine intake temperature control system46US 5,036,668 AAllied-Signal Inc. · 1991
- Spraying method and apparatus40US 7,225,762 B2Marioff Corporation Oy · 2007
- Method and an apparatus for the treatment of exhaust gas from an IC engine38US 5,184,462 A1993