F04B 2201/02
Piston parameters
F04B2201/02 (Piston parameters) appears on 594 US grants and 609 published applications in this corpus.
Search patents in F04B- Granted patents
- 594
- Published applications
- 609
- Assignees
- 378
- Inventors
- 1,189
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 12 | 0 |
| 2000 | 21 | 0 |
| 2001 | 18 | 2 |
| 2002 | 10 | 15 |
| 2003 | 17 | 20 |
| 2004 | 13 | 18 |
| 2005 | 11 | 24 |
| 2006 | 15 | 24 |
| 2007 | 8 | 24 |
| 2008 | 15 | 16 |
| 2009 | 13 | 25 |
| 2010 | 10 | 14 |
| 2011 | 14 | 12 |
| 2012 | 23 | 13 |
| 2013 | 7 | 15 |
| 2014 | 11 | 19 |
| 2015 | 10 | 14 |
| 2016 | 15 | 23 |
| 2017 | 14 | 36 |
| 2018 | 18 | 37 |
| 2019 | 38 | 51 |
| 2020 | 28 | 45 |
| 2021 | 38 | 39 |
| 2022 | 42 | 31 |
| 2023 | 20 | 30 |
| 2024 | 38 | 17 |
| 2025 | 27 | 26 |
| 2026 | 14 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 2201/0201Position of the pistonIndexing code352
- F04B 2201/0206Length of piston strokeIndexing code136
- F04B 2201/0202Linear speed of the pistonIndexing code99
- F04B 2201/0207Number of pumping strokes in unit timeIndexing code37
- F04B 2201/0208Leakage across the pistonIndexing code35
- F04B 2201/0209Duration of piston strokeIndexing code35
- F04B 2201/0203Acceleration of the pistonIndexing code18
- F04B 2201/0204Power on the pistonIndexing code9
Recent patents
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- Pump for hvac&r system13 Aug 2026US 2026/0235114 A1Tyco Fire & Security GmbH
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- Pneumatic Pump Cycle Counter25 Jun 2026US 2026/0176959 A1Shady Grove Road Investments, LLC
Most cited
By later US patents
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- Linear peristaltic pump249US 6,213,739 B1Niagara Pump Corporation · 2001
- Reducing fluid pressure spikes in a pumping system221US 10,393,108 B2Schlumberger Technology Corporation · 2019