F15B 2211/613
Feeding circuits
F15B2211/613 (Feeding circuits) appears on 190 US grants and 185 published applications in this corpus.
Search patents in F15B- Granted patents
- 190
- Published applications
- 185
- Assignees
- 105
- Inventors
- 377
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 2 |
| 2004 | 3 | 4 |
| 2005 | 5 | 3 |
| 2006 | 4 | 6 |
| 2007 | 5 | 6 |
| 2008 | 5 | 7 |
| 2009 | 4 | 10 |
| 2010 | 7 | 3 |
| 2011 | 3 | 4 |
| 2012 | 2 | 8 |
| 2013 | 5 | 23 |
| 2014 | 17 | 16 |
| 2015 | 10 | 11 |
| 2016 | 5 | 7 |
| 2017 | 13 | 12 |
| 2018 | 6 | 6 |
| 2019 | 12 | 9 |
| 2020 | 9 | 7 |
| 2021 | 12 | 7 |
| 2022 | 5 | 15 |
| 2023 | 6 | 2 |
| 2024 | 5 | 4 |
| 2025 | 5 | 6 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic machine swing system with anti-drift9 Jun 2026US 12,650,003 B2Caterpillar Inc.
- Energy storage and reutilization for a single-rod electro-hydrostatic actuator9 Jun 2026US 12,650,138 B2University of Manitoba
- Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator21 Apr 2026US 12,607,205 B2University of Manitoba
- Hydraulic circuit for a construction machine27 Jan 2026US 12,534,882 B2Caterpillar SARL
- Fork leveling system and method, and telescopic boom forklift9 Sep 2025US 12,410,046 B2Sany Marine Heavy Industry Co., Ltd.
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
- Integrated Electrohydraulic Actuator30 Jul 2026US 2026/0218734 A1Parker-Hannifin Corporation
- Construction machine9 Jul 2026US 2026/0193869 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic System having an Inertia Charging Arrangement25 Jun 2026US 2026/0177086 A1Robert Bosch GmbH
- Hydraulic machine swing system with anti-drift29 Jan 2026US 2026/0028797 A1Caterpillar Inc.
Most cited
By later US patents
- Shovel64US 6,789,335 B1Kobelco Construction Machinery Co., Ltd. · 2004
- Apparatus for recovering pressure oil returned from actuators39US 6,151,894 AKomatsu Ltd. · 2000
- Safety device for hydraulic closed circuit38US 5,048,294 AHitachi Construction Machinery Co., Ltd. · 1991
- Hydraulic controller and hydraulic drive unit provided with said hydraulic controller36US 7,281,372 B2Kayaba Industry Co., Ltd. · 2007
- Dual, coupled check valve for direct drive, reversible power sources for hydraulic systems35US 7,155,910 B22007