E02F 9/2296
Systems with a variable displacement pump
Official title: {Systems with a variable displacement pump}
E02F9/2296 (Systems with a variable displacement pump) appears on 1,839 US grants and 1,898 published applications in this corpus.
Search patents in E02F- Granted patents
- 1,839
- Published applications
- 1,898
- Assignees
- 235
- Inventors
- 2,334
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 21 | 0 |
| 1993 | 17 | 0 |
| 1994 | 17 | 0 |
| 1995 | 13 | 0 |
| 1996 | 13 | 0 |
| 1997 | 16 | 0 |
| 1998 | 16 | 0 |
| 1999 | 27 | 0 |
| 2000 | 31 | 0 |
| 2001 | 28 | 2 |
| 2002 | 21 | 19 |
| 2003 | 20 | 17 |
| 2004 | 15 | 15 |
| 2005 | 7 | 20 |
| 2006 | 14 | 33 |
| 2007 | 21 | 28 |
| 2008 | 13 | 42 |
| 2009 | 32 | 46 |
| 2010 | 15 | 40 |
| 2011 | 33 | 41 |
| 2012 | 29 | 68 |
| 2013 | 36 | 122 |
| 2014 | 86 | 117 |
| 2015 | 99 | 127 |
| 2016 | 101 | 128 |
| 2017 | 119 | 102 |
| 2018 | 95 | 91 |
| 2019 | 117 | 73 |
| 2020 | 83 | 102 |
| 2021 | 101 | 137 |
| 2022 | 97 | 146 |
| 2023 | 89 | 97 |
| 2024 | 125 | 129 |
| 2025 | 132 | 81 |
| 2026 | 76 | 75 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Construction machine22 Sep 2026US 12,742,307 B2Hitachi Construction Machinery Co., Ltd.
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- Work Machine8 Oct 2026US 2026/0308879 A1Hitachi Construction Machinery Co., Ltd.
- Working machine control method, working machine control program, working machine control system, and working machine1 Oct 2026US 2026/0297902 A1Yanmar Holdings Co., Ltd.
- System for setting target position in automatic revolution control of work machine24 Sep 2026US 2026/0286650 A1Komatsu Ltd.
- Work machine17 Sep 2026US 2026/0275682 A1Hitachi Construction Machinery Co., Ltd.
- Work machine and actuator calibration system10 Sep 2026US 2026/0266029 A1Hitachi Construction Machinery Co., Ltd.
Most cited
By later US patents
- Remote radio operating system, and remote operating apparatus, mobile relay station and radio mobile working machine92US 6,778,097 B1Shin Caterpillar Mitsubishi Ltd. · 2004
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003
- Construction equipment79US 6,725,581 B2Komatsu Ltd. · 2004
- Variable flow hydraulic system73US 6,029,445 ACase Corporation · 2000
- Control system for load-sensing hydraulic drive circuit65US 4,967,557 AHitachi Construction Machinery Co., Ltd. · 1990