F15B 21/047
Preventing foaming, churning or cavitation
F15B21/047 (Preventing foaming, churning or cavitation) appears on 79 US grants and 89 published applications in this corpus.
Search patents in F15B- Granted patents
- 79
- Published applications
- 89
- Assignees
- 68
- Inventors
- 231
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 6 | 6 |
| 2004 | 3 | 3 |
| 2005 | 4 | 3 |
| 2006 | 1 | 4 |
| 2007 | 4 | 3 |
| 2008 | 1 | 4 |
| 2009 | 1 | 3 |
| 2010 | 3 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 4 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 4 | 4 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 3 | 6 |
| 2020 | 4 | 5 |
| 2021 | 6 | 5 |
| 2022 | 3 | 3 |
| 2023 | 1 | 5 |
| 2024 | 5 | 4 |
| 2025 | 6 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and application for eliminating gaseous cavitation9 Jun 2026US 12,650,137 B2
- Hydraulic system5 May 2026US 12,618,467 B2Kawasaki Jukogyo Kabushiki Kaisha
- Modification of aircraft for parabolic flight17 Feb 2026US 12,552,518 B2MU-G Technologies, LLC
- Work machine30 Dec 2025US 12,509,858 B2Kobelco Construction Machinery Co., Ltd.
- Crane having a closed hydraulic circuit11 Nov 2025US 12,467,532 B2Manitowoc Crane Group France SAS
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
- Electro-Hydraulic Actuator Assembly with a Fluid Access Port11 Jun 2026US 2026/0160279 A1Parker-Hannifin Corporation
- Mobile work machine with emergency stop function in case of leakage in the work line29 Jan 2026US 2026/0028800 A1Oilfix GmbH
- Hydraulic system22 Jan 2026US 2026/0022717 A1Kawasaki Jukogyo Kabushiki Kaisha
- Hydraulic Drive System4 Dec 2025US 2025/0369460 A1
Most cited
By later US patents
- Pressure exchanger with an anti-cavitation pressure relief system in the end covers70US 6,540,487 B2Energy Recovery, Inc. · 2003
- Electrohydraulic control module31US 4,150,686 ATextron Inc. · 1979
- Pilot operated pressure and vacuum relief valve25US 4,016,903 AKabushiki Kaisha Komatsu Seisakusho · 1977
- Control for electro-hydraulic valve arrangement22US 6,598,391 B2Caterpillar Inc. · 2003
- Electrohydraulic valve assembly20US 6,619,183 B2Caterpillar Inc. · 2003