F15B 13/043
With electrically-controlled pilot valves
Official title: with electrically-controlled pilot valves
F15B13/043 (With electrically-controlled pilot valves) appears on 755 US grants and 577 published applications in this corpus.
Search patents in F15B- Granted patents
- 755
- Published applications
- 577
- Assignees
- 341
- Inventors
- 1,249
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 9 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 13 | 0 |
| 1982 | 11 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 20 | 0 |
| 1986 | 15 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 6 | 0 |
| 1995 | 11 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 14 | 4 |
| 2002 | 13 | 12 |
| 2003 | 13 | 15 |
| 2004 | 12 | 9 |
| 2005 | 8 | 10 |
| 2006 | 9 | 9 |
| 2007 | 12 | 20 |
| 2008 | 9 | 10 |
| 2009 | 6 | 16 |
| 2010 | 6 | 7 |
| 2011 | 10 | 9 |
| 2012 | 9 | 22 |
| 2013 | 5 | 17 |
| 2014 | 12 | 19 |
| 2015 | 17 | 23 |
| 2016 | 24 | 17 |
| 2017 | 20 | 38 |
| 2018 | 26 | 33 |
| 2019 | 28 | 56 |
| 2020 | 59 | 54 |
| 2021 | 49 | 40 |
| 2022 | 33 | 38 |
| 2023 | 37 | 37 |
| 2024 | 38 | 33 |
| 2025 | 29 | 20 |
| 2026 | 23 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 13/0433The pilot valves being pressure control valves245
- F15B 13/0438The pilot valves being of the nozzle-flapper type145
- F15B 13/0435The pilot valves being sliding valves120
- F15B 13/0431The electrical control resulting in an on-off function119
- F15B 13/0436The pilot valves being of the steerable jet type64
Recent patents
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- Pilot-control electromagnetic valve30 Jun 2026US 12,669,135 B2Hydac Fluidtechnik GmbH
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic actuator6 Aug 2026US 2026/0226922 A1Svm Schultz Verwaltungs-GmbH & Co.KG
- Hydraulic Device with a Status Display16 Jul 2026US 2026/0201913 A1Robert Bosch GmbH
- Remote travel feedback systems and related methods9 Jul 2026US 2026/0194079 A1Fisher Controls International LLC
Most cited
By later US patents
- Microstructure gas valve control172US 5,176,358 AHoneywell Inc. · 1993
- Microstructure gas valve control171US 5,323,999 AHoneywell Inc. · 1994
- Microstructure gas valve control forming method168US 5,441,597 AHoneywell Inc. · 1995
- Fluid pressure drive device98US 4,175,589 AHitachi, Ltd. · 1979
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003