E02F 9/2282
Systems using center bypass type changeover valves
Official title: {Systems using center bypass type changeover valves}
E02F9/2282 (Systems using center bypass type changeover valves) appears on 389 US grants and 415 published applications in this corpus.
Search patents in E02F- Granted patents
- 389
- Published applications
- 415
- Assignees
- 69
- Inventors
- 558
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 3 |
| 2003 | 7 | 6 |
| 2004 | 2 | 2 |
| 2005 | 4 | 3 |
| 2006 | 1 | 4 |
| 2007 | 3 | 4 |
| 2008 | 1 | 4 |
| 2009 | 5 | 4 |
| 2010 | 2 | 5 |
| 2011 | 3 | 3 |
| 2012 | 1 | 25 |
| 2013 | 9 | 30 |
| 2014 | 9 | 22 |
| 2015 | 23 | 38 |
| 2016 | 26 | 25 |
| 2017 | 25 | 18 |
| 2018 | 30 | 16 |
| 2019 | 23 | 20 |
| 2020 | 19 | 19 |
| 2021 | 22 | 42 |
| 2022 | 21 | 52 |
| 2023 | 25 | 19 |
| 2024 | 30 | 32 |
| 2025 | 32 | 10 |
| 2026 | 14 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Shovel and construction system11 Aug 2026US 12,703,958 B2Sumitomo Construction Machinery Co., Ltd.
- Work machine and control device for work machine26 May 2026US 12,637,827 B2Sumitomo Heavy Industries, Ltd.
- Work machine26 May 2026US 12,637,836 B2Sumitomo Heavy Industries, Ltd.
- Excavator and excavator control system19 May 2026US 12,630,997 B2Sumitomo Construction Machinery Co., Ltd.
- Display device for shovel, and shovel12 May 2026US 12,624,531 B2Sumitomo Construction Machinery Co., Ltd.
- Hydraulic circuit, loader, and working machine10 Sep 2026US 2026/0266027 A1Kubota Corporation
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Work vehicle13 Aug 2026US 2026/0234908 A1Kubota Corporation
- Work machine2 Jul 2026US 2026/0185328 A1Sumitomo Heavy Industries, Ltd.
- Work machine25 Jun 2026US 2026/0176842 A1Sumitomo Construction Machinery Co., Ltd.
Most cited
By later US patents
- Control system for automatically controlling actuators of an excavator57US 5,361,211 ASamsung Heavy Industries Co., Ltd. · 1994
- Hybrid machine with hydraulic drive device53US 6,962,050 B2Komatsu Ltd. · 2005
- Hydraulic control circuit in a hydraulic excavator52US 5,970,709 AKabushiki Kaisha Kobe Seiko Sho · 1999
- Process and composition for purifying semiconductor process gases to remove Lewis acid and oxidant impurities therefrom47US 5,385,689 ANovapure Corporation · 1995
- Apparatus for diagnosing failure of hydraulic pump for work machine35US 6,055,851 AHitachi Construction Machinery Co., Ltd. · 2000