E02F 9/2232
Using one or more variable displacement pumps
Official title: {using one or more variable displacement pumps}
E02F9/2232 (Using one or more variable displacement pumps) appears on 996 US grants and 973 published applications in this corpus.
Search patents in E02F- Granted patents
- 996
- Published applications
- 973
- Assignees
- 168
- Inventors
- 1,428
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 18 | 0 |
| 1993 | 14 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 14 | 0 |
| 2000 | 15 | 0 |
| 2001 | 16 | 1 |
| 2002 | 5 | 10 |
| 2003 | 10 | 7 |
| 2004 | 6 | 8 |
| 2005 | 7 | 12 |
| 2006 | 7 | 19 |
| 2007 | 9 | 17 |
| 2008 | 10 | 16 |
| 2009 | 16 | 23 |
| 2010 | 9 | 29 |
| 2011 | 14 | 29 |
| 2012 | 15 | 34 |
| 2013 | 29 | 53 |
| 2014 | 31 | 44 |
| 2015 | 47 | 42 |
| 2016 | 41 | 53 |
| 2017 | 50 | 45 |
| 2018 | 38 | 51 |
| 2019 | 61 | 47 |
| 2020 | 44 | 61 |
| 2021 | 80 | 98 |
| 2022 | 67 | 81 |
| 2023 | 51 | 54 |
| 2024 | 80 | 69 |
| 2025 | 65 | 38 |
| 2026 | 37 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction machine15 Sep 2026US 12,735,869 B2Hd Construction Equipment Co., Ltd.
- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Output control device, method and program1 Sep 2026US 12,723,371 B1Takeuchi Mfg. Co., Ltd.
- Hydraulic control system and setting method and calibration method of target engine torque during relief in hydraulic control system25 Aug 2026US 12,716,200 B2Caterpillar SARL
- Construction machine25 Aug 2026US 12,716,203 B2Kobelco 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.
- Work machine and actuator calibration system10 Sep 2026US 2026/0266029 A1Hitachi Construction Machinery Co., Ltd.
- Output control device, method and program3 Sep 2026US 2026/0258637 A1Takeuchi Mfg. Co., Ltd.
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Construction machine9 Jul 2026US 2026/0193869 A1Hitachi Construction Machinery Co., Ltd.
Most cited
By later US patents
- Radial piston pump assemblies and use thereof in hydraulic circuits95US 10,125,750 B2HUSCO International, Inc. · 2018
- Construction machine69US 7,086,226 B2Komatsu Ltd. · 2006
- Control system for load-sensing hydraulic drive circuit65US 4,967,557 AHitachi Construction Machinery Co., Ltd. · 1990
- Pump controlling apparatus for construction machine65US 5,048,293 AHitachi Construction Machinery Co., Ltd. · 1991
- Multiple consumer hydraulic mechanisms60US 4,617,854 ALinde Aktiengesellschaft · 1986