F15B 11/003
Systems with load-holding valves
Official title: {Systems with load-holding valves}
F15B11/003 (Systems with load-holding valves) appears on 226 US grants and 189 published applications in this corpus.
Search patents in F15B- Granted patents
- 226
- Published applications
- 189
- Assignees
- 135
- Inventors
- 381
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 2 |
| 2002 | 10 | 3 |
| 2003 | 6 | 11 |
| 2004 | 6 | 4 |
| 2005 | 6 | 8 |
| 2006 | 4 | 8 |
| 2007 | 8 | 7 |
| 2008 | 5 | 9 |
| 2009 | 7 | 4 |
| 2010 | 6 | 11 |
| 2011 | 3 | 2 |
| 2012 | 3 | 5 |
| 2013 | 4 | 3 |
| 2014 | 7 | 8 |
| 2015 | 1 | 7 |
| 2016 | 8 | 15 |
| 2017 | 9 | 8 |
| 2018 | 9 | 14 |
| 2019 | 14 | 10 |
| 2020 | 18 | 20 |
| 2021 | 14 | 9 |
| 2022 | 7 | 5 |
| 2023 | 7 | 3 |
| 2024 | 7 | 7 |
| 2025 | 3 | 3 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Jack with hydraulic lock6 Oct 2026US 12,753,053 B2Pacific Rim International, LLC
- Hydraulic machine swing system with anti-drift9 Jun 2026US 12,650,003 B2Caterpillar Inc.
- Hydraulic control system and method with electro-proportional pressure valve and integral check5 May 2026US 12,618,424 B2HydraForce, Inc.
- Hydraulic system5 May 2026US 12,618,467 B2Kawasaki Jukogyo Kabushiki Kaisha
- Fluid pressure control device3 Mar 2026US 12,565,903 B2KYB Corporation
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
- Hydraulic machine swing system with anti-drift29 Jan 2026US 2026/0028797 A1Caterpillar Inc.
- Valve Assembly for Double-Acting Hoisting Mechanism29 Jan 2026US 2026/0029001 A1Robert Bosch GmbH
- Hydraulic system for a dynamic energy transfer system11 Dec 2025US 2025/0376036 A1Caterpillar Inc.
- Hydraulic system27 Nov 2025US 2025/0361883 A1Kawasaki Jukogyo Kabushiki Kaisha
Most cited
By later US patents
- Hydraulic system, manifold and volumetric compensator73US 6,519,939 B1M-Mac Actuators, Inc. · 2003
- Drive device48US 6,543,223 B2Festo AG & Co. · 2003
- Proportional seat-type 4-way valve47US 5,211,196 AHydrolux S.a r.l. · 1993
- Hydraulic control device47US 5,259,293 AHeilmeier & Weinlein Fabrik fuer Oel-Hydraulik GmbH & Co. KG · 1993
- Reverse differential holding valve41US 4,172,582 ARexnord Inc. · 1979