F15B 13/04
For use with a single servomotor
Official title: for use with a single servomotor
F15B13/04 (For use with a single servomotor) appears on 2,928 US grants and 2,173 published applications in this corpus.
Search patents in F15B- Granted patents
- 2,928
- Published applications
- 2,173
- Assignees
- 1,080
- Inventors
- 4,549
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 33 | 0 |
| 1978 | 40 | 0 |
| 1979 | 31 | 0 |
| 1980 | 35 | 0 |
| 1981 | 37 | 0 |
| 1982 | 38 | 0 |
| 1983 | 20 | 0 |
| 1984 | 28 | 0 |
| 1985 | 46 | 0 |
| 1986 | 41 | 0 |
| 1987 | 43 | 0 |
| 1988 | 39 | 0 |
| 1989 | 41 | 0 |
| 1990 | 20 | 0 |
| 1991 | 41 | 0 |
| 1992 | 36 | 0 |
| 1993 | 38 | 0 |
| 1994 | 33 | 0 |
| 1995 | 40 | 0 |
| 1996 | 42 | 0 |
| 1997 | 44 | 0 |
| 1998 | 50 | 0 |
| 1999 | 54 | 0 |
| 2000 | 58 | 0 |
| 2001 | 64 | 19 |
| 2002 | 64 | 36 |
| 2003 | 51 | 57 |
| 2004 | 46 | 55 |
| 2005 | 57 | 45 |
| 2006 | 34 | 40 |
| 2007 | 36 | 51 |
| 2008 | 22 | 49 |
| 2009 | 26 | 44 |
| 2010 | 29 | 49 |
| 2011 | 31 | 41 |
| 2012 | 40 | 72 |
| 2013 | 52 | 84 |
| 2014 | 50 | 65 |
| 2015 | 66 | 109 |
| 2016 | 82 | 110 |
| 2017 | 89 | 138 |
| 2018 | 103 | 156 |
| 2019 | 151 | 165 |
| 2020 | 173 | 169 |
| 2021 | 161 | 121 |
| 2022 | 132 | 104 |
| 2023 | 111 | 120 |
| 2024 | 104 | 108 |
| 2025 | 109 | 100 |
| 2026 | 72 | 66 |
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
- Small displacement hydraulic actuator22 Sep 2026US 12,742,464 B2Zhejiang Kc Mechanical & Electrical Co., Ltd.
- Transfer valve with dual authority control porting15 Sep 2026US 12,736,068 B2Hamilton Sundstrand Corporation
- Multi-channel flow control system15 Sep 2026US 12,736,069 B2Industrial Technology Research Institute
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Hydraulic System8 Oct 2026US 2026/0309169 A1Caterpillar SARL
- Method for operating a hydraulic device8 Oct 2026US 2026/0309224 A1Schaeffler Technologies AG & Co. KG
- Hydraulic system for a refuse vehicle1 Oct 2026US 2026/0296342 A1Oshkosh Corporation
- Positive-feedback steady-state flow force structure for spool1 Oct 2026US 2026/0298268 A1Zhejiang University
- Null and maximum flow adjustable electrohydraulic servo vavle (ehsv)1 Oct 2026US 2026/0298356 A1Honeywell International Inc.
Most cited
By later US patents
- Magnetic position sensor for measuring linear displacement1,173US 6,670,806 B2Koninklijke Philips Electronics N. V. · 2003
- Hydraulic circuit for automatic transmission1,004US 9,488,197 B2Hyundai Motor Company · 2016
- Kinesthetic feedback apparatus and method552US 5,396,266 ATechnical Research Associates, Inc. · 1995
- Microstructure gas valve control172US 5,176,358 AHoneywell Inc. · 1993
- Microstructure gas valve control171US 5,323,999 AHoneywell Inc. · 1994