F15B 2211/575
Pilot pressure control
F15B2211/575 (Pilot pressure control) appears on 212 US grants and 179 published applications in this corpus.
Search patents in F15B- Granted patents
- 212
- Published applications
- 179
- Assignees
- 124
- Inventors
- 446
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 6 | 5 |
| 2004 | 4 | 5 |
| 2005 | 5 | 6 |
| 2006 | 4 | 7 |
| 2007 | 5 | 5 |
| 2008 | 4 | 5 |
| 2009 | 5 | 3 |
| 2010 | 2 | 4 |
| 2011 | 2 | 2 |
| 2012 | 2 | 6 |
| 2013 | 5 | 3 |
| 2014 | 2 | 2 |
| 2015 | 2 | 6 |
| 2016 | 5 | 8 |
| 2017 | 4 | 14 |
| 2018 | 5 | 12 |
| 2019 | 17 | 13 |
| 2020 | 23 | 17 |
| 2021 | 13 | 11 |
| 2022 | 17 | 14 |
| 2023 | 6 | 9 |
| 2024 | 7 | 8 |
| 2025 | 7 | 10 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aerial work platform, and method for controlling an aerial work platform2 Jun 2026US 12,644,475 B2Haulotte Group
- Valve21 Apr 2026US 12,607,207 B2Hydac Fluidtechnik GmbH
- Electromagnetic pilot-operated proportional pressure control valve17 Mar 2026US 12,577,965 B2Hydac Fluidtechnik GmbH
- Floating control system for fixed displacement pump system24 Feb 2026US 12,560,183 B2Hunan Sinoboom Intelligent Equipment Co., Ltd.
- Pressure-compensation hydraulic pump, rotation speed control system and control method, and construction machinery6 Jan 2026US 12,516,683 B2Zoomlion Earthmoving Machinery Co., Ltd.
- Hydraulic control system for an agricultural tillage implement22 Jan 2026US 2026/0020511 A1CNH Industrial America LLC
- Wing force management system for an agricultural implement14 Aug 2025US 2025/0255209 A1CNH Industrial America LLC
- Electro-hydraulic actuator and brake device14 Aug 2025US 2025/0256695 A1Ican Company Ltd.
- Hydraulic system in work machine17 Jul 2025US 2025/0230634 A1Kubota Corporation
- Valve26 Jun 2025US 2025/0207683 A1Hydac Fluidtechnik GmbH
Most cited
By later US patents
- Regulated pressure supply for a variable-displacement reversible hydraulic motor42US 6,922,991 B2Moog Inc. · 2005
- Proportional pressure control valve41US 5,836,335 AFluid Power Industries, Inc. · 1998
- Control apparatus for a plurality of simultaneously actuatable fluid motors32US 4,165,613 AKoehring Company · 1979
- Load-sensing active hydraulic control device for multiple actuators32US 5,347,811 AKayaba Industry Co., Ltd. · 1994
- Fluid-actuated clamping apparatus and circuit28US 3,990,594 ACascade Corporation · 1976