F15B 2211/55
For limiting a pressure up to a maximum pressure
Official title: for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
F15B2211/55 (For limiting a pressure up to a maximum pressure) appears on 409 US grants and 237 published applications in this corpus.
Search patents in F15B- Granted patents
- 409
- Published applications
- 237
- Assignees
- 235
- Inventors
- 770
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 12 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 17 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 21 | 2 |
| 2002 | 15 | 10 |
| 2003 | 9 | 21 |
| 2004 | 14 | 13 |
| 2005 | 15 | 14 |
| 2006 | 9 | 7 |
| 2007 | 9 | 14 |
| 2008 | 9 | 6 |
| 2009 | 6 | 4 |
| 2010 | 4 | 5 |
| 2011 | 5 | 3 |
| 2012 | 1 | 2 |
| 2013 | 5 | 1 |
| 2014 | 1 | 5 |
| 2015 | 3 | 9 |
| 2016 | 2 | 6 |
| 2017 | 11 | 7 |
| 2018 | 4 | 14 |
| 2019 | 9 | 18 |
| 2020 | 20 | 19 |
| 2021 | 20 | 18 |
| 2022 | 18 | 11 |
| 2023 | 11 | 9 |
| 2024 | 8 | 7 |
| 2025 | 8 | 8 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine18 Jun 2026US 2026/0168520 A1AGCO International GmbH
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Most cited
By later US patents
- Hydraulic system for supplying hydraulic fluid to a hydraulically operated device alternately at pressures of different value71US 4,142,368 AWelko Industriale S.p.A. · 1979
- Apparatus and method for controlling a rated system pressure56US 6,273,686 B1A. Roemheld GmbH & Co KG · 2001
- Multiple utilization of blow-mold air54US 5,648,026 AKrupp Corpoplast Maschinenbau GmbH · 1997
- Electro-hydraulic actuator system52US 7,191,593 B1Northrop Grumman Corporation · 2007
- Hydraulic tensioner50US 6,383,103 B1Tsubakimoto Chain Co. · 2002