F15B 13/16
Special measures for feedback
Official title: Special measures for feedback {, e.g. by a follow-up device}
F15B13/16 (Special measures for feedback) appears on 94 US grants and 48 published applications in this corpus.
Search patents in F15B- Granted patents
- 94
- Published applications
- 48
- Assignees
- 58
- Inventors
- 149
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 3 |
| 2015 | 2 | 2 |
| 2016 | 2 | 3 |
| 2017 | 2 | 4 |
| 2018 | 2 | 7 |
| 2019 | 4 | 4 |
| 2020 | 6 | 5 |
| 2021 | 3 | 4 |
| 2022 | 3 | 1 |
| 2023 | 3 | 2 |
| 2024 | 3 | 3 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Positioning valve control system17 Sep 2024US 12,092,236 B2Hamilton Sundstrand Corporation
- Pilot-operated valve with a position indicator4 Jun 2024US 12,000,500 B2Sun Hydraulics, LLC
- Electrohydraulic proportional pressure control for open circuit pump30 Jan 2024US 11,885,317 B2Danfoss A/S
- Control unit for the pneumatic actuation of an active creel10 Oct 2023US 11,781,571 B2Saurer Technologies GmbH & Co. KG
- Hydraulic system19 Sep 2023US 11,761,465 B2Grundfos Holding A/S
- Remote travel feedback systems and related methods9 Jul 2026US 2026/0194079 A1Fisher Controls International LLC
- Self-Sensing Pressure-Driven Extending Actuator19 Sep 2024US 2024/0309894 A1Ludlum Measurements, Inc.
- Hydraulic assembly for supplying an attachment with hydraulic power29 Aug 2024US 2024/0288008 A1Deere & Company
- Pilot-Operated Valve with a Position Indicator1 Feb 2024US 2024/0035586 A1Sun Hydraulics, LLC
- Positioning valve control system12 Oct 2023US 2023/0323976 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Pressurized fluid actuation system for amplifying operator input force in a surgical instrument343US 5,339,723 AEthicon, Inc. · 1994
- Tractor and towed implement with elevation control system for implement including pressure responsive valve actuator50US 4,637,474 A1987
- Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve41US 7,487,707 B2HUSCO International, Inc. · 2009
- Displacement controlled hydraulic proportional valve34US 5,366,202 ACaterpillar Inc. · 1994
- Feedback controlled hydraulic valve system20US 4,598,626 AVickers, Incorporated · 1986