F02B 53/08
Charging
Official title: Charging, e.g. by means of rotary-piston pump
F02B53/08 (Charging) appears on 117 US grants and 48 published applications in this corpus.
Search patents in F02B- Granted patents
- 117
- Published applications
- 48
- Assignees
- 31
- Inventors
- 154
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 5 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 4 | 4 |
| 2015 | 4 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 3 |
| 2018 | 8 | 6 |
| 2019 | 1 | 3 |
| 2020 | 7 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Topological rotary engine29 Sep 2022US 2022/0307413 A1Huazhong University of Science and Technology
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Most cited
By later US patents
- Internal combustion engine with compound air compression138US 5,362,219 A1994
- Constant pressure heating vane rotary engine52US 3,989,011 A1976
- Sliding vane engine42US 5,524,587 AMallen Research Limited Partnership · 1996
- Multi-fuel rotary power plants using gas pistons, elliptic compressors, internally cooled thermodynamic cycles and slurry type colloidal fuel from coal and charcoal41US 4,519,206 A1985
- Rotary engine and method of operation36US 5,720,251 A1998