E02F 9/2225
Using pressure-compensating valves
Official title: {using pressure-compensating valves}
E02F9/2225 (Using pressure-compensating valves) appears on 1,091 US grants and 1,143 published applications in this corpus.
Search patents in E02F- Granted patents
- 1,091
- Published applications
- 1,143
- Assignees
- 204
- Inventors
- 1,738
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 13 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 2 |
| 2002 | 17 | 7 |
| 2003 | 7 | 16 |
| 2004 | 14 | 10 |
| 2005 | 9 | 17 |
| 2006 | 9 | 13 |
| 2007 | 12 | 13 |
| 2008 | 3 | 9 |
| 2009 | 13 | 32 |
| 2010 | 4 | 15 |
| 2011 | 23 | 18 |
| 2012 | 9 | 17 |
| 2013 | 15 | 26 |
| 2014 | 23 | 33 |
| 2015 | 22 | 44 |
| 2016 | 23 | 55 |
| 2017 | 46 | 54 |
| 2018 | 40 | 64 |
| 2019 | 75 | 65 |
| 2020 | 58 | 63 |
| 2021 | 76 | 113 |
| 2022 | 79 | 149 |
| 2023 | 84 | 108 |
| 2024 | 115 | 91 |
| 2025 | 117 | 69 |
| 2026 | 70 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction assist system for shovel6 Oct 2026US 12,753,577 B2Sumitomo Heavy Industries, Ltd.
- Work vehicle, method of controlling work vehicle, and controller for work vehicle22 Sep 2026US 12,742,301 B2Kubota Corporation
- Construction machine22 Sep 2026US 12,742,307 B2Hitachi Construction Machinery Co., Ltd.
- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Work Machine8 Oct 2026US 2026/0308880 A1Hitachi Construction Machinery Co., Ltd.
- Auxiliary hydraulic port expansion system for excavators17 Sep 2026US 2026/0276094 A1Ahearn Equipment, Inc.
- Work machine and actuator calibration system10 Sep 2026US 2026/0266029 A1Hitachi Construction Machinery Co., Ltd.
- System for controlling construction machine, and method for controlling same20 Aug 2026US 2026/0243048 A1Hd Hyundai Infracore Co., Ltd.
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
Most cited
By later US patents
- Tool recognition and control system for a work machine82US 6,542,789 B2Caterpillar Inc. · 2003
- Control system for load-sensing hydraulic drive circuit65US 4,967,557 AHitachi Construction Machinery Co., Ltd. · 1990
- System for recovering energy in hydraulic circuit65US 6,789,387 B2Caterpillar Inc. · 2004
- Electronic ride control system for off-road vehicles62US 5,890,870 ACase Corporation · 1999
- Multiple consumer hydraulic mechanisms60US 4,617,854 ALinde Aktiengesellschaft · 1986