Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
Official title: Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture (carburettors with heating, cooling or thermal insulating means for combustion-air, fuel or fuel-air mixture F02M15/00; apparatus for de-liquefying non-liquid fuels by heating F02M21/06; apparatus having heating means for non-gaseous fuels with low melting point F02M21/10; apparatus characterised by adding hot secondary air to fuel-air mixture F02M23/14; fuel-injection apparatus characterised by having heating, cooling or thermally insulating means F02M53/00)
F02M31/00 (Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture) appears on 2,079 US grants and 1,268 published applications in this corpus.
Search patents in F02M- Granted patents
- 2,079
- Published applications
- 1,268
- Assignees
- 692
- Inventors
- 3,630
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 67 | 0 |
| 1977 | 45 | 0 |
| 1978 | 59 | 0 |
| 1979 | 34 | 0 |
| 1980 | 48 | 0 |
| 1981 | 38 | 0 |
| 1982 | 63 | 0 |
| 1983 | 75 | 0 |
| 1984 | 65 | 0 |
| 1985 | 61 | 0 |
| 1986 | 40 | 0 |
| 1987 | 44 | 0 |
| 1988 | 32 | 0 |
| 1989 | 41 | 0 |
| 1990 | 33 | 0 |
| 1991 | 34 | 0 |
| 1992 | 28 | 0 |
| 1993 | 22 | 0 |
| 1994 | 25 | 0 |
| 1995 | 25 | 0 |
| 1996 | 13 | 0 |
| 1997 | 18 | 0 |
| 1998 | 27 | 0 |
| 1999 | 38 | 0 |
| 2000 | 30 | 0 |
| 2001 | 53 | 11 |
| 2002 | 46 | 44 |
| 2003 | 34 | 39 |
| 2004 | 37 | 51 |
| 2005 | 38 | 55 |
| 2006 | 33 | 49 |
| 2007 | 34 | 56 |
| 2008 | 28 | 48 |
| 2009 | 32 | 55 |
| 2010 | 30 | 58 |
| 2011 | 39 | 77 |
| 2012 | 41 | 55 |
| 2013 | 49 | 72 |
| 2014 | 51 | 60 |
| 2015 | 46 | 64 |
| 2016 | 40 | 59 |
| 2017 | 61 | 63 |
| 2018 | 51 | 64 |
| 2019 | 58 | 58 |
| 2020 | 47 | 41 |
| 2021 | 58 | 53 |
| 2022 | 49 | 33 |
| 2023 | 47 | 25 |
| 2024 | 33 | 20 |
| 2025 | 20 | 34 |
| 2026 | 19 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
- F02M 31/02Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture: for heating1,755
- F02M 31/20Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture: for cooling355
- F02M 31/005Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture: using a heat-pipe27
Recent patents
- Air cooling systems for snowmobiles1 Sep 2026US 12,723,538 B2Arctic Cat Inc.
- Systems and methods for reducing emissions with smart alternator18 Aug 2026US 12,709,274 B2Cummins Inc.
- Hybrid drive and fuel vaporizer for UAV and other mobile environments18 Aug 2026US 12,709,419 B2LiquidPiston, Inc.
- Engine control system for intake valve opening timing during cold start11 Aug 2026US 12,704,099 B2Cummins Power Generation Inc.
- Systems and method for vehicle thermal management28 Jul 2026US 12,692,812 B2
- System and method for generating electricity using pyrolysis of plastics8 Oct 2026US 2026/0312100 A1
- Compression ignition engine and system utilizing ammonia as a fuel source24 Sep 2026US 2026/0286881 A1Analytical Engineering, Inc.
- 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
- Method and Apparatus for Non-Fossil Fuel Internal Combustion Engine27 Aug 2026US 2026/0251112 A1MayMaan Research, LLC
Most cited
- Method and apparatus for operation of combustion engines205US 6,155,212 A2000
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Pipelined memory controller180US 6,272,609 B1Micron Electronics, Inc. · 2001
- Premixed charge compression ignition engine with optimal combustion control152US 6,230,683 B1Cummins Engine Company, Inc. · 2001
- Fuel-conditioning skid147US 7,442,239 B2Ingersoll-Rand Energy Systems Corporation · 2008