F15B 11/17
Using two or more pumps
Official title: using two or more pumps
F15B11/17 (Using two or more pumps) appears on 713 US grants and 620 published applications in this corpus.
Search patents in F15B- Granted patents
- 713
- Published applications
- 620
- Assignees
- 278
- Inventors
- 1,317
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 12 | 0 |
| 1978 | 14 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 13 | 4 |
| 2002 | 7 | 5 |
| 2003 | 8 | 13 |
| 2004 | 10 | 11 |
| 2005 | 13 | 15 |
| 2006 | 9 | 10 |
| 2007 | 10 | 17 |
| 2008 | 8 | 16 |
| 2009 | 20 | 19 |
| 2010 | 7 | 14 |
| 2011 | 10 | 9 |
| 2012 | 6 | 16 |
| 2013 | 14 | 29 |
| 2014 | 13 | 26 |
| 2015 | 21 | 41 |
| 2016 | 26 | 40 |
| 2017 | 42 | 35 |
| 2018 | 34 | 39 |
| 2019 | 45 | 39 |
| 2020 | 48 | 31 |
| 2021 | 41 | 39 |
| 2022 | 33 | 37 |
| 2023 | 27 | 41 |
| 2024 | 37 | 23 |
| 2025 | 39 | 32 |
| 2026 | 16 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Construction machine6 Oct 2026US 12,753,569 B2Hitachi Construction Machinery Co., Ltd.
- Control method based on a four-chamber hydraulic cylinder6 Oct 2026US 12,753,780 B2Taiyuan University of Technology
- Work machine accessory motor load protection8 Sep 2026US 12,729,699 B2Caterpillar Inc.
- Construction machine1 Sep 2026US 12,723,605 B2Hitachi Construction Machinery Co., Ltd.
- Drive control device for rotating work machine and rotating work machine provided with same16 Jun 2026US 12,655,607 B2Kobelco Construction Machinery Co., Ltd.
- Transport vehicle20 Aug 2026US 2026/0241846 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Work machine6 Aug 2026US 2026/0226927 A1Komatsu Ltd.
- Crane upper and lower structure interlocking system, and crane9 Jul 2026US 2026/0193063 A1Xuzhou Heavy Machinery Co., Ltd.
Most cited
By later US patents
- Fluid power distribution and control system111US 10,161,423 B2Sauer-Danfoss ApS · 2018
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Variable flow hydraulic system73US 6,029,445 ACase Corporation · 2000
- Dual-pump, flow-isolated hydraulic circuit for an agricultural tractor60US 5,918,558 ACase Corporation · 1999
- Independent load sensing for a vehicle hydraulic system58US 9,145,905 B2Oshkosh Corporation · 2015