F15B 2211/36
Pilot pressure sensing
F15B2211/36 (Pilot pressure sensing) appears on 62 US grants and 56 published applications in this corpus.
Search patents in F15B- Granted patents
- 62
- Published applications
- 56
- Assignees
- 30
- Inventors
- 152
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 4 |
| 2016 | 3 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 3 | 5 |
| 2020 | 5 | 7 |
| 2021 | 6 | 6 |
| 2022 | 6 | 4 |
| 2023 | 3 | 10 |
| 2024 | 7 | 2 |
| 2025 | 5 | 3 |
| 2026 | 4 | 2 |
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
- Work machine24 Feb 2026US 12,559,910 B2Hitachi Construction Machinery Co., Ltd.
- Calibration system in hydraulic system3 Feb 2026US 12,540,634 B2Caterpillar SARL
- Energy recovery system and control strategy for hydraulic excavator boom20 Jan 2026US 12,529,391 B1Central South University of Forestry and Technology
- Work machine30 Dec 2025US 12,509,858 B2Kobelco Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Bulldozing hydraulic system with bulldozing blade floating function and excavator11 Jun 2026US 2026/0160045 A1Xuzhou XCMG Excavator Machinery Co., Ltd.
- Directional control valve device30 Oct 2025US 2025/0334190 A1Nabtesco Corporation
- Calibration System in Hydraulic System1 May 2025US 2025/0137475 A1Caterpillar SARL
- Work machine9 Jan 2025US 2025/0012051 A1Kobelco Construction Machinery Co., Ltd.
Most cited
By later US patents
- Control valve system for blowout preventers58US 4,509,405 ANL Industries, Inc. · 1985
- Hydraulic control circuit in a hydraulic excavator52US 5,970,709 AKabushiki Kaisha Kobe Seiko Sho · 1999
- Fluid control system for power shovel46US 5,083,428 AKabushiki Kaisha Kobe Seiko Sho · 1992
- Control valve system for blowout preventers25US 4,614,148 ANL Industries, Inc. · 1986
- Pump discharge flow rate controlled by pilot pressure acting on vehicle drive valves23US 5,052,179 AKabushiki Kaisha Kobe Seiko Sho · 1991