F02B 47/10
Circulation of exhaust gas in closed or semi-closed circuits
Official title: Circulation of exhaust gas in closed or semi-closed circuits, e.g. with simultaneous addition of oxygen
F02B47/10 (Circulation of exhaust gas in closed or semi-closed circuits) appears on 58 US grants and 43 published applications in this corpus.
Search patents in F02B- Granted patents
- 58
- Published applications
- 43
- Assignees
- 40
- Inventors
- 112
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 3 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 3 |
| 2013 | 1 | 5 |
| 2014 | 1 | 1 |
| 2015 | 5 | 5 |
| 2016 | 1 | 1 |
| 2017 | 3 | 5 |
| 2018 | 4 | 3 |
| 2019 | 2 | 0 |
| 2020 | 1 | 3 |
| 2021 | 7 | 0 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen storage power plant, and method for operating same14 Apr 2026US 12,601,289 B2Eag Automatisierungsbau GmbH
- Non-emitting engines with oxyfuel combustion and carbon capture system25 Nov 2025US 12,480,437 B2Cummins Inc.
- System and method for using concentrated oxygen for gas intake into an internal combustion engine28 Oct 2025US 12,454,907 B2H2Diesel, Inc.
- Oxidizer and fuel supply system for internal combustion engines2 Jul 2024US 12,025,083 B2
- Method for process-integrated oxygen supply of a hydrogen circulation engine comprising recirculation of a noble gas7 Nov 2023US 11,808,238 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Feeding and exhaust system for internal combustion engine, or thermal unit, and respective method of operation13 Aug 2026US 2026/0235064 A1Rhapis S.R.L.
- System and method for using concentrated oxygen for gas intake into an internal combustion engine2 Oct 2025US 2025/0305443 A1H2Diesel, Inc.
- Hydrogen storage power plant, and method for operating same21 Aug 2025US 2025/0264050 A1Eag Automatisierungsbau GmbH
- Non-emitting engines with oxyfuel combustion and carbon capture system27 Mar 2025US 2025/0101906 A1Cummins Inc.
- Oxidizer and fuel supply system for internal combustion engines30 Nov 2023US 2023/0383713 A1
Most cited
By later US patents
- EGR detection via humidity detection46US 7,715,976 B1Ford Global Technologies, LLC · 2010
- Internal combustion engines41US 4,674,463 ACosworth Engineering Limited · 1987
- Petroleum and hydrogen driven engine34US 5,119,768 A1992
- Apparatus for totally recycling engine exhaust gas26US 4,587,807 A1986
- Closed cycle internal combustion engine23US 5,016,599 ACosworth Deep Sea Systems Limited · 1991