F04B 2201/0201
Position of the piston
F04B2201/0201 (Position of the piston) appears on 352 US grants and 381 published applications in this corpus.
Search patents in F04B- Granted patents
- 352
- Published applications
- 381
- Assignees
- 246
- Inventors
- 744
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 1 |
| 2002 | 4 | 5 |
| 2003 | 7 | 15 |
| 2004 | 8 | 9 |
| 2005 | 5 | 17 |
| 2006 | 11 | 9 |
| 2007 | 5 | 20 |
| 2008 | 3 | 8 |
| 2009 | 10 | 13 |
| 2010 | 4 | 8 |
| 2011 | 12 | 7 |
| 2012 | 11 | 8 |
| 2013 | 3 | 6 |
| 2014 | 10 | 16 |
| 2015 | 5 | 12 |
| 2016 | 9 | 18 |
| 2017 | 9 | 26 |
| 2018 | 10 | 24 |
| 2019 | 29 | 32 |
| 2020 | 17 | 28 |
| 2021 | 24 | 22 |
| 2022 | 31 | 20 |
| 2023 | 10 | 22 |
| 2024 | 28 | 6 |
| 2025 | 16 | 18 |
| 2026 | 7 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Single stage reciprocating piston compressor with cooling22 Sep 2026US 12,742,447 B2I-Jack Technologies Incorporated
- Monitoring method for monitoring the operation of a dosing pump and dosing pump system11 Aug 2026US 12,704,120 B2Grundfos Holding A/S
- Method for operating a construction-material and/or viscous-material pump for conveying construction material and/or viscous material, and construction-material and/or viscous-material pump for conveying construction material and/or viscous material28 Jul 2026US 12,692,860 B2Putzmeister Engineering GmbH
- Valves with overdriven protection7 Jul 2026US 12,674,445 B2Daoz International Holding Limited
- Signal distribution device for a fluid pump16 Jun 2026US 12,655,839 B2Caterpillar Inc.
- Expandable device for a body cavity27 Aug 2026US 2026/0249060 A1IP Holding Company
- Electric cylinder device20 Aug 2026US 2026/0243240 A1Advics Co., Ltd.
- Pump for hvac&r system13 Aug 2026US 2026/0235114 A1Tyco Fire & Security GmbH
- Method for operating a linear motor compressor, and linear motor compressor13 Aug 2026US 2026/0235117 A1Burckhardt Compression AG
- Fluid machine and method for controlling such a machine14 May 2026US 2026/0132780 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Membrane pump with stretchable pump membrane348US 6,948,918 B2Novo Nordisk A/S · 2005
- Blood pump actuator273US 5,360,445 AInternational Business Machines Corporation · 1994
- 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
- Method and apparatus for measuring piston position in a free piston compressor148US 5,342,176 ASunPower Corporation · 1994