F15B 2211/253
Pressure margin control
Official title: Pressure margin control, e.g. pump pressure in relation to load pressure
F15B2211/253 (Pressure margin control) appears on 164 US grants and 115 published applications in this corpus.
Search patents in F15B- Granted patents
- 164
- Published applications
- 115
- Assignees
- 75
- Inventors
- 290
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 4 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 6 |
| 2008 | 3 | 6 |
| 2009 | 3 | 8 |
| 2010 | 3 | 8 |
| 2011 | 5 | 5 |
| 2012 | 2 | 7 |
| 2013 | 7 | 5 |
| 2014 | 3 | 5 |
| 2015 | 6 | 7 |
| 2016 | 3 | 3 |
| 2017 | 8 | 4 |
| 2018 | 3 | 2 |
| 2019 | 4 | 6 |
| 2020 | 2 | 4 |
| 2021 | 8 | 5 |
| 2022 | 5 | 2 |
| 2023 | 8 | 5 |
| 2024 | 5 | 8 |
| 2025 | 5 | 7 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic control system in working machine21 Apr 2026US 12,606,989 B2Caterpillar SARL
- Working machine and control method therefor31 Mar 2026US 12,590,596 B2Kubota Corporation
- Hydraulic system for working machine3 Mar 2026US 12,565,759 B2Kubota Corporation
- Floating control system for fixed displacement pump system24 Feb 2026US 12,560,183 B2Hunan Sinoboom Intelligent Equipment Co., Ltd.
- Mobile machine and method20 Jan 2026US 12,529,388 B2AGCO International GmbH
- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine18 Jun 2026US 2026/0168520 A1AGCO International GmbH
- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine11 Jun 2026US 2026/0160276 A1AGCO International GmbH
- Refuse vehicle control systems and methods7 May 2026US 2026/0126059 A1Oshkosh Corporation
- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine4 Dec 2025US 2025/0369457 A1AGCO International GmbH
- Working machine and control method therefor2 Oct 2025US 2025/0305523 A1Kubota Corporation
Most cited
By later US patents
- Hydraulic circuit utilizing a compensator pressure selecting value51US 5,209,063 AKabushiki Kaisha Komatsu Seisakusho · 1993
- Method of controlling speed change of hydraulic drive device for vehicle and speed change device47US 5,784,883 AKomatsu Ltd. · 1998
- Fast response load sense control system41US 4,986,071 AKomatsu Dresser Company · 1991
- Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve41US 7,487,707 B2HUSCO International, Inc. · 2009
- Control device for hydraulically propelled work vehicle36US 5,638,677 AHitachi Construction Machinery Co., Ltd. · 1997