F16H 61/4148
Open loop circuits
F16H61/4148 (Open loop circuits) appears on 131 US grants and 96 published applications in this corpus.
Search patents in F16H- Granted patents
- 131
- Published applications
- 96
- Assignees
- 82
- Inventors
- 263
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 1 |
| 2002 | 6 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 5 |
| 2005 | 2 | 2 |
| 2006 | 2 | 4 |
| 2007 | 3 | 5 |
| 2008 | 5 | 4 |
| 2009 | 3 | 9 |
| 2010 | 4 | 5 |
| 2011 | 1 | 1 |
| 2012 | 7 | 8 |
| 2013 | 4 | 7 |
| 2014 | 4 | 2 |
| 2015 | 5 | 4 |
| 2016 | 5 | 3 |
| 2017 | 3 | 1 |
| 2018 | 3 | 4 |
| 2019 | 1 | 2 |
| 2020 | 3 | 4 |
| 2021 | 4 | 6 |
| 2022 | 7 | 2 |
| 2023 | 0 | 6 |
| 2024 | 4 | 5 |
| 2025 | 4 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Open hydraulic assistance system25 Aug 2026US 12,716,489 B2Poclain Hydraulics Industrie
- Control device12 May 2026US 12,625,476 B2Hiroshima University
- Hydraulic circuit for a construction machine27 Jan 2026US 12,534,882 B2Caterpillar SARL
- Fan drive device with proportional valve30 Sep 2025US 12,429,070 B2Robert Bosch GmbH
- Method for controlling a hydrostatic drive16 Sep 2025US 12,416,358 B2Robert Bosch GmbH
- Special underground construction device and method for operation of a special underground construction device8 Jan 2026US 2026/0009293 A1ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
- Hydraulic circuit for a construction machine2 Oct 2025US 2025/0305246 A1Caterpillar SARL
- Control circuit for a harvester head17 Jul 2025US 2025/0230822 A1Ponsse Oyj
- Device and method for controlling the traction of a hydraulic assistance circuit21 Nov 2024US 2024/0384788 A1Poclain Hydraulics Industrie
- Method for Controlling a Hydrostatic Drive12 Sep 2024US 2024/0301949 A1Robert Bosch GmbH
Most cited
By later US patents
- Hybrid propulsion system for road vehicles153US 6,170,587 B2Transport Energy Systems PTY LTD · 2001
- Continuously smooth transmission75US 5,887,674 AThe United States of America as represented by the Administrator of the U. S. Environmental Protection Agency · 1999
- Differential driving supercharger and method for controlling the same60US 5,890,468 AKomatsu Ltd. · 1999
- Method of controlling speed change of hydraulic drive device for vehicle and speed change device47US 5,784,883 AKomatsu Ltd. · 1998
- Control apparatus for construction machine47US 6,009,708 AShin Caterpillar Mitsubishi Ltd. · 2000