F15B 2211/6656
Closed loop control, i.e. control using feedback
F15B2211/6656 (Closed loop control, i.e. control using feedback) appears on 276 US grants and 326 published applications in this corpus.
Search patents in F15B- Granted patents
- 276
- Published applications
- 326
- Assignees
- 196
- Inventors
- 684
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 3 |
| 2003 | 1 | 4 |
| 2004 | 3 | 5 |
| 2005 | 0 | 3 |
| 2006 | 9 | 12 |
| 2007 | 6 | 8 |
| 2008 | 5 | 8 |
| 2009 | 8 | 7 |
| 2010 | 8 | 10 |
| 2011 | 4 | 4 |
| 2012 | 8 | 3 |
| 2013 | 7 | 5 |
| 2014 | 2 | 5 |
| 2015 | 3 | 5 |
| 2016 | 3 | 10 |
| 2017 | 5 | 11 |
| 2018 | 10 | 31 |
| 2019 | 13 | 24 |
| 2020 | 31 | 25 |
| 2021 | 23 | 30 |
| 2022 | 27 | 31 |
| 2023 | 22 | 23 |
| 2024 | 22 | 22 |
| 2025 | 24 | 23 |
| 2026 | 11 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Hydraulic drive device18 Aug 2026US 12,710,061 B2Kawasaki Jukogyo Kabushiki Kaisha
- Valve control device18 Aug 2026US 12,710,110 B2Alfa Laval Corporate AB
- Systems and methods for synchronized valve actuation28 Jul 2026US 12,693,691 B2Swagelok Company
- Drive control device for rotating work machine and rotating work machine provided with same16 Jun 2026US 12,655,607 B2Kobelco Construction Machinery Co., Ltd.
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Fluid control assembly and system16 Jul 2026US 2026/0201971 A9Precision Planting LLC
- Operator group, especially for an operator vehicle25 Jun 2026US 2026/0176118 A1Manitou Italia S.R.L.
- Position detection sensor4 Jun 2026US 2026/0153361 A1Keyence Corporation
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
Most cited
By later US patents
- Regenerative adaptive fluid motor control77US 6,349,543 B12002
- Electrohydraulic valve system54US 4,437,385 ADeere & Company · 1984
- Method of controlling speed change of hydraulic drive device for vehicle and speed change device47US 5,784,883 AKomatsu Ltd. · 1998
- Control device for hydraulically-operated equipment42US 6,308,516 B1Komatsu Ltd. · 2001
- Linear-acting controllable pneumatic actuator and motion control apparatus including a field responsive medium and control method therefor35US 6,302,249 B1Lord Corporation · 2001