F15B 2013/0428
With switchable internal or external pilot pressure source
Official title: {with switchable internal or external pilot pressure source}
F15B2013/0428 (With switchable internal or external pilot pressure source) appears on 21 US grants and 13 published applications in this corpus.
Search patents in F15B- Granted patents
- 21
- Published applications
- 13
- Assignees
- 13
- Inventors
- 42
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 4 |
| 2018 | 0 | 3 |
| 2019 | 5 | 2 |
| 2020 | 3 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Hydraulic system for work machine, and work machine8 Apr 2025US RE50,366 E1Kubota Corporation
- Zoned manifold assembly for solenoid valve control system9 Mar 2021US 10,941,872 B2Asco, L. P.
- Construction machine14 Jul 2020US 10,711,437 B2Hitachi Construction Machinery Co., Ltd.
- Hydraulic system for working machine14 Jul 2020US 10,711,438 B2Kubota Corporation
- Construction Machine21 Nov 2019US 2019/0352883 A1Hitachi Construction Machinery Co., Ltd.
- Zoned manifold assembly for solenoid valve control system11 Apr 2019US 2019/0107217 A1Asco, L. P.
- Hydraulic system for working machine20 Sep 2018US 2018/0266080 A1Kubota Corporation
- Hydraulic system for working machine28 Jun 2018US 2018/0179736 A1Kubota Corporation
- Closed loop and/or open loop control method for an electropneumatic field device28 Jun 2018US 2018/0180069 A1Samson Aktiengesellschaft
Most cited
By later US patents
- Solenoid valve and manifold assembly25US 5,086,803 ATaiyo Ltd. · 1992
- Transfer valve manifold15US 5,860,445 ASMC Corporation · 1999
- Valve arrangement for use with a hydraulic accumulator14US 4,706,930 A1987
- Fluid assisted spring return for pilot operated, spool valve13US 4,649,957 AThe Aro Corporation · 1987
- Directional-control-valve-connected body13US 5,983,921 ASMC Corporation · 1999