F15B 13/0417
Load sensing elements
Official title: {Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves}
F15B13/0417 (Load sensing elements) appears on 337 US grants and 153 published applications in this corpus.
Search patents in F15B- Granted patents
- 337
- Published applications
- 153
- Assignees
- 118
- Inventors
- 381
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 11 | 0 |
| 1978 | 16 | 0 |
| 1979 | 13 | 0 |
| 1980 | 8 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 8 | 0 |
| 1992 | 11 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 3 | 6 |
| 2004 | 4 | 9 |
| 2005 | 8 | 3 |
| 2006 | 4 | 5 |
| 2007 | 4 | 1 |
| 2008 | 0 | 7 |
| 2009 | 4 | 4 |
| 2010 | 1 | 10 |
| 2011 | 4 | 5 |
| 2012 | 1 | 3 |
| 2013 | 12 | 6 |
| 2014 | 2 | 0 |
| 2015 | 5 | 9 |
| 2016 | 1 | 9 |
| 2017 | 6 | 10 |
| 2018 | 9 | 11 |
| 2019 | 11 | 10 |
| 2020 | 15 | 15 |
| 2021 | 9 | 12 |
| 2022 | 12 | 4 |
| 2023 | 7 | 2 |
| 2024 | 2 | 4 |
| 2025 | 4 | 3 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valve section and hydraulic valve assembly22 Sep 2026US 12,742,463 B2HAWE Hydraulik SE
- Hydraulic distributor with pressure compensator for directional valves18 Aug 2026US 12,710,062 B2Walvoil S.P.A.
- Fixed displacement hydraulic pump match flow demand control system23 Jun 2026US 12,663,026 B2TEAM Industries, Inc.
- Hydraulic distributor with compensation device for directional valves5 May 2026US 12,618,422 B2Walvoil S.P.A.
- Mechanism for regulating high pressure industrial air using double layer electromagnetic valves28 Apr 2026US 12,612,928 B2Viettel Group
- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine18 Jun 2026US 2026/0168520 A1AGCO International GmbH
- Synchronizing pin lifting devices29 Jan 2026US 2026/0033291 A1VAT Holding AG
- Valve section and hydraulic valve assembly1 Jan 2026US 2026/0002550 A1HAWE Hydraulik SE
- Modular hydraulic manifold1 May 2025US 2025/0137471 A1Caterpillar Inc.
- Hydraulic distributor with compensation device for directional valves10 Apr 2025US 2025/0116282 A1Walvoil S.P.A.
Most cited
By later US patents
- Hydraulic valve having pressure compensated demand flow41US 4,253,482 AGresen Manufacturing Company · 1981
- Post pressure compensated unitary hydraulic valve34US 4,693,272 AHUSCO International, Inc. · 1987
- Load check and pressure compensating valve33US 5,067,389 ACaterpillar Inc. · 1991
- Hydraulic driving apparatus33US 5,083,430 AHitachi Construction Machinery Co., Ltd. · 1992
- Multiple pressure compensated flow control valve device of parallel connection used with fixed displacement pump32US 4,020,867 ANisshin Sangyo Co., Ltd. · 1977