F04B 49/16
Control: by adjusting the capacity of dead spaces of working chambers
Official title: by adjusting the capacity of dead spaces of working chambers
F04B49/16 (Control: by adjusting the capacity of dead spaces of working chambers) appears on 85 US grants and 63 published applications in this corpus.
Search patents in F04B- Granted patents
- 85
- Published applications
- 63
- Assignees
- 70
- Inventors
- 190
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 0 |
| 2004 | 2 | 2 |
| 2005 | 2 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 0 | 0 |
| 2010 | 1 | 5 |
| 2011 | 0 | 4 |
| 2012 | 0 | 1 |
| 2013 | 3 | 3 |
| 2014 | 1 | 3 |
| 2015 | 6 | 1 |
| 2016 | 3 | 5 |
| 2017 | 1 | 3 |
| 2018 | 3 | 5 |
| 2019 | 1 | 4 |
| 2020 | 7 | 4 |
| 2021 | 5 | 3 |
| 2022 | 1 | 0 |
| 2023 | 2 | 2 |
| 2024 | 1 | 4 |
| 2025 | 4 | 2 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Compressor having functions of discharge interruption and discharge control of pressurized gas126US 4,410,299 AOgura Glutch Co., Ltd. · 1983
- Proportioning pump72US 5,158,441 ABaxter International Inc. · 1992
- Pulseless liquid supply system for flow cytometry60US 5,915,925 A1999
- Method of controlling the drive means for a pump delivering liquid to an accumlator58US 6,017,194 A2000
- Integral fluid pump and internal combustion engine43US 5,785,505 ACaterpillar Inc. · 1998