F02M 25/032
Producing and adding steam
F02M25/032 (Producing and adding steam) appears on 134 US grants and 76 published applications in this corpus.
Search patents in F02M- Granted patents
- 134
- Published applications
- 76
- Assignees
- 44
- Inventors
- 198
- Latest grant
- 18 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 5 |
| 2005 | 1 | 5 |
| 2006 | 3 | 3 |
| 2007 | 2 | 1 |
| 2008 | 3 | 2 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 5 |
| 2013 | 0 | 2 |
| 2014 | 4 | 4 |
| 2015 | 3 | 3 |
| 2016 | 2 | 4 |
| 2017 | 1 | 6 |
| 2018 | 6 | 6 |
| 2019 | 5 | 4 |
| 2020 | 6 | 4 |
| 2021 | 5 | 6 |
| 2022 | 3 | 2 |
| 2023 | 2 | 3 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- System device for stratified injecting exhaust gas recirculation for clean combustion of internal combustion engine18 Jun 2024US 12,012,912 B2Tianjin University
- NOx mitigation strategy in methanol internal combustion engine19 Mar 2024US 11,933,240 B2Caterpillar Inc.
- System, apparatus and method for clean, multi-energy generation9 May 2023US 11,643,984 B2
- Wet biofuel compression ignition21 Mar 2023US 11,608,799 B2Wisconsin Alumni Research Foundation
- System and method for operating an engine with reduced NOx emissions6 Dec 2022US 11,519,344 B2
- Air/steam engine and use thereof25 Dec 2025US 2025/0389237 A1
- System, apparatus and method for clean, multi-energy generation9 Nov 2023US 2023/0358184 A1
- Nox mitigation strategy in methanol internal combustion engine2 Nov 2023US 2023/0349339 A1Caterpillar Inc.
- System device for stratified injecting exhaust gas recirculation for clean combustion of internal combustion engine22 Jun 2023US 2023/0193859 A1Tianjin University
- Wet biofuel compression ignition7 Jul 2022US 2022/0213849 A1Wisconsin Alumni Research Foundation
Most cited
By later US patents
- Cement, reduced-carbon ash and controlled mineral formation using sub- and supercritical high-velocity free-jet expansion into fuel-fired combustor fireballs72US 6,240,859 B1Four Corners Group, Inc. · 2001
- Electric heat exchanger for simultaneously vaporizing two different fluids56US 4,480,172 A1984
- Engine system employing an unsymmetrical cycle56US 6,170,441 B2Quantum Energy Technologies · 2001
- Advanced high efficiency, ultra-low emission, thermochemically recuperated reciprocating internal combustion engine55US 7,210,467 B2Gas Technology Institute · 2007
- Fuel system for internal combustion engines46US 3,968,775 AEnergy Research Corporation · 1976