F02B 43/04
For improving efficiency of combustion
Official title: for improving efficiency of combustion
F02B43/04 (For improving efficiency of combustion) appears on 64 US grants and 72 published applications in this corpus.
Search patents in F02B- Granted patents
- 64
- Published applications
- 72
- Assignees
- 53
- Inventors
- 154
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 5 |
| 2014 | 1 | 7 |
| 2015 | 3 | 5 |
| 2016 | 6 | 10 |
| 2017 | 5 | 7 |
| 2018 | 7 | 6 |
| 2019 | 2 | 7 |
| 2020 | 10 | 4 |
| 2021 | 4 | 3 |
| 2022 | 2 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen engine10 Feb 2026US 12,546,248 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Thermal cracker for combustible and flammable liquids for engines7 Nov 2023US 11,808,237 B2
- Engine29 Aug 2023US 11,739,684 B2Yanmar Power Technology Co., Ltd.
- Engine8 Nov 2022US 11,492,960 B2Yanmar Power Technology Co., Ltd.
- Gas engine power generation system30 Aug 2022US 11,428,194 B2LG Electronics Inc.
- Piston and Internal Combustion Engine3 Sep 2026US 2026/0258767 A1KS Kolbenschmidt GmbH
- Hydrogen engine14 Aug 2025US 2025/0257684 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Engine2 Feb 2023US 2023/0033387 A1Yanmar Power Technology Co., Ltd.
- Dual zone cooling system for combined engine compressors29 Dec 2022US 2022/0412251 A1Onboard Dynamics, Inc.
- Thermal Cracker for Combustible and Flammable Liquids for Engines6 Jan 2022US 2022/0003190 A1
Most cited
By later US patents
- Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control73US 5,666,923 AUniversity of Central Florida · 1997
- Hydrogen enriched natural gas as a clean motor fuel68US 5,660,602 AUniversity of Central Florida · 1997
- Dual fuel injection structure47US 5,136,986 AEnergy Conversions, Inc. · 1992
- Technique and spark plug to ignite very lean fuel air mixtures, particulary for gas engines39US 4,892,070 A1990
- Gas delivery system39US 5,555,868 ATranscom Gas Technologies Pty Ltd. · 1996