F01P 7/044
Using hydraulic drives
Official title: {using hydraulic drives}
F01P7/044 (Using hydraulic drives) appears on 173 US grants and 124 published applications in this corpus.
Search patents in F01P- Granted patents
- 173
- Published applications
- 124
- Assignees
- 76
- Inventors
- 393
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 3 |
| 2002 | 5 | 4 |
| 2003 | 3 | 3 |
| 2004 | 5 | 4 |
| 2005 | 6 | 6 |
| 2006 | 3 | 5 |
| 2007 | 4 | 3 |
| 2008 | 1 | 2 |
| 2009 | 3 | 7 |
| 2010 | 3 | 5 |
| 2011 | 2 | 3 |
| 2012 | 0 | 10 |
| 2013 | 3 | 9 |
| 2014 | 10 | 10 |
| 2015 | 6 | 4 |
| 2016 | 5 | 7 |
| 2017 | 3 | 5 |
| 2018 | 6 | 7 |
| 2019 | 5 | 3 |
| 2020 | 7 | 5 |
| 2021 | 1 | 1 |
| 2022 | 5 | 6 |
| 2023 | 5 | 6 |
| 2024 | 4 | 1 |
| 2025 | 4 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Transportation vehicle13 Jan 2026US 12,522,283 B2Hitachi Construction Machinery Co., Ltd.
- Fan drive device with proportional valve30 Sep 2025US 12,429,070 B2Robert Bosch GmbH
- Fan structure and work vehicle27 May 2025US 12,312,766 B2Kubota Corporation
- Fan speed control system for engine cooling18 Feb 2025US 12,228,067 B2Applied Industrial Technologies, Inc.
- Hydraulic operating device for a cooling fan of a utility vehicle11 Feb 2025US 12,221,916 B2Deere & Company
- Radiator cleanout for industrial vehicle20 Aug 2026US 2026/0243190 A1
- Transportation Vehicle9 Jul 2026US 2026/0194001 A1Hitachi Construction Machinery Co., Ltd.
- Cooling package arrangement11 Jun 2026US 2026/0160196 A1Deere & Company
- Transportation Vehicle23 Oct 2025US 2025/0326430 A1Hitachi Construction Machinery Co., Ltd.
- Fan speed control system for engine cooling22 May 2025US 2025/0163842 A1Applied Industrial Technologies, Inc.
Most cited
By later US patents
- Cooling system for a vehicle having an internal-combustion engine99US 5,215,044 ABehr GmbH & Co. · 1993
- Coolant/refrigerant temperature control system75US 4,555,910 ABorg-Warner Corporation · 1985
- Engine cooling system67US 6,955,141 B2General Motors Corporation · 2005
- Twin fan control system and method63US 6,463,891 B2Caterpillar Inc. · 2002
- Features of main control computer for a power machine60US 6,202,014 B1Clark Equipment Company · 2001