F04B 2205/50
Presence of foreign matter in the fluid
F04B2205/50 (Presence of foreign matter in the fluid) appears on 75 US grants and 61 published applications in this corpus.
Search patents in F04B- Granted patents
- 75
- Published applications
- 61
- Assignees
- 70
- Inventors
- 179
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 5 |
| 2018 | 1 | 7 |
| 2019 | 5 | 4 |
| 2020 | 6 | 6 |
| 2021 | 2 | 4 |
| 2022 | 4 | 2 |
| 2023 | 1 | 2 |
| 2024 | 4 | 5 |
| 2025 | 2 | 2 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air venting12 May 2026US 12,624,704 B2Grundfos Holding A/S
- Protection of make-up system for high pressure bellows-style pump system28 Apr 2026US 12,612,909 B2Halliburton Energy Services.Inc.
- Pump cavitation detection device, method, and system10 Mar 2026US 12,571,387 B2Yokogawa Electric Corporation
- Conveying device17 Feb 2026US 12,553,430 B2Hydac Technology GmbH
- Method of controlling an air compressor of a vehicle15 Jul 2025US 12,359,661 B2Volvo Truck Corporation
- Hydrogen production apparatus for a wind turbine, wind turbine arrangement and method for operating a hydrogen production apparatus for a wind turbine2 Jul 2026US 2026/0185252 A1Siemens Gamesa Renewable Energy A/S
- A portable vacuum pump with protection against suction of liquids23 Apr 2026US 2026/0109500 A1Status D.O.O. Metlika
- Gas Interference Detection and Control of Long-Stroke Pumping Unit Speed for Gas Interference Mitigation28 Aug 2025US 2025/0270919 A1ChampionX LLC
- Apparatuses and methods of pumping sensitive fluids17 Jul 2025US 2025/0230904 A1ChampionX LLC
- Protection of make-up system for high pressure bellows-style pump system14 Nov 2024US 2024/0376888 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Hose pump for the exact dosing of small quantities of liquids1,512US 5,693,020 ALoctite Europa E.E.I.G. (E.W.I.V.) · 1997
- Drug pump systems and methods1,088US 5,935,099 ASIMS Deltec, Inc. · 1999
- Pump simulation apparatus1,024US 5,485,408 ASIMS Deltec, Inc. · 1996
- Systems and methods for communicating with ambulatory medical devices such as drug delivery devices851US 5,338,157 APharmacia Deltec, Inc. · 1994
- Drug pump systems and methods658US 6,241,704 B1SIMS Deltec, Inc. · 2001