F15B 2211/353
Flow control by regulating means in return line, i.e. meter-out control
F15B2211/353 (Flow control by regulating means in return line, i.e. meter-out control) appears on 161 US grants and 134 published applications in this corpus.
Search patents in F15B- Granted patents
- 161
- Published applications
- 134
- Assignees
- 87
- Inventors
- 315
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 11 |
| 2004 | 12 | 9 |
| 2005 | 6 | 2 |
| 2006 | 2 | 8 |
| 2007 | 7 | 2 |
| 2008 | 2 | 2 |
| 2009 | 1 | 1 |
| 2010 | 4 | 3 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 4 |
| 2015 | 2 | 11 |
| 2016 | 5 | 3 |
| 2017 | 6 | 5 |
| 2018 | 4 | 4 |
| 2019 | 7 | 9 |
| 2020 | 10 | 7 |
| 2021 | 9 | 12 |
| 2022 | 9 | 4 |
| 2023 | 7 | 13 |
| 2024 | 9 | 8 |
| 2025 | 7 | 8 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Hydraulic circuit with a return line metering valve and method of operation81US 6,467,264 B1HUSCO International, Inc. · 2002
- Pilot solenoid control valve and hydraulic control system using same49US 5,878,647 AHUSCO International, Inc. · 1999
- System and method for accumulating hydraulic fluid48US 6,655,136 B2Caterpillar Inc. · 2003
- Apparatus for recovering pressure oil returned from actuators39US 6,151,894 AKomatsu Ltd. · 2000
- Swing-frame motor flow and sensed load pressure control system for hydraulic excavator33US 4,938,023 AShin Caterpillar Mitsubishi Ltd. · 1990