F15B 2211/50509
The pressure control means controlling a pressure upstream of the pressure control
Official title: the pressure control means controlling a pressure upstream of the pressure control means
F15B2211/50509 (The pressure control means controlling a pressure upstream of the pressure control) appears on 1,139 US grants and 871 published applications in this corpus.
Search patents in F15B- Granted patents
- 1,139
- Published applications
- 871
- Assignees
- 490
- Inventors
- 2,033
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 26 | 0 |
| 1978 | 15 | 0 |
| 1979 | 16 | 0 |
| 1980 | 14 | 0 |
| 1981 | 15 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 11 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 13 | 0 |
| 1992 | 15 | 0 |
| 1993 | 13 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 8 | 0 |
| 1998 | 25 | 0 |
| 1999 | 23 | 0 |
| 2000 | 16 | 0 |
| 2001 | 38 | 3 |
| 2002 | 32 | 13 |
| 2003 | 19 | 34 |
| 2004 | 21 | 29 |
| 2005 | 30 | 30 |
| 2006 | 19 | 20 |
| 2007 | 15 | 36 |
| 2008 | 19 | 32 |
| 2009 | 23 | 20 |
| 2010 | 18 | 28 |
| 2011 | 18 | 22 |
| 2012 | 10 | 20 |
| 2013 | 26 | 31 |
| 2014 | 28 | 41 |
| 2015 | 29 | 47 |
| 2016 | 35 | 32 |
| 2017 | 34 | 30 |
| 2018 | 30 | 41 |
| 2019 | 40 | 41 |
| 2020 | 49 | 56 |
| 2021 | 59 | 43 |
| 2022 | 47 | 56 |
| 2023 | 43 | 35 |
| 2024 | 43 | 55 |
| 2025 | 45 | 51 |
| 2026 | 30 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Work machine accessory motor load protection8 Sep 2026US 12,729,699 B2Caterpillar Inc.
- Hydraulic jack assemblies28 Jul 2026US 12,692,139 B2
- Safety valve, pneumatic actuator, and vehicle23 Jun 2026US 12,663,025 B2Zf Cv Systems Europe BV
- Pneumatic system flow balancing architecture and method23 Jun 2026US 12,663,028 B2The Boeing Company
- Drive control device for rotating work machine and rotating work machine provided with same16 Jun 2026US 12,655,607 B2Kobelco Construction Machinery Co., Ltd.
- Method Of Adjusting Relief Pressure Of Relief Valve For Swing Motor13 Aug 2026US 2026/0234899 A1Caterpillar SARL
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Integrated Electrohydraulic Actuator30 Jul 2026US 2026/0218734 A1Parker-Hannifin Corporation
- Construction machine9 Jul 2026US 2026/0193869 A1Hitachi Construction Machinery Co., Ltd.
Most cited
By later US patents
- Fail-safe actuation system926US 9,239,064 B2Moog Inc. · 2016
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Hydraulic system, manifold and volumetric compensator73US 6,519,939 B1M-Mac Actuators, Inc. · 2003
- 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
- Shovel64US 6,789,335 B1Kobelco Construction Machinery Co., Ltd. · 2004