F15B 11/0423
By controlling pump output or bypass, other than to maintain constant speed
Official title: {by controlling pump output or bypass, other than to maintain constant speed}
F15B11/0423 (By controlling pump output or bypass, other than to maintain constant speed) appears on 144 US grants and 173 published applications in this corpus.
Search patents in F15B- Granted patents
- 144
- Published applications
- 173
- Assignees
- 88
- Inventors
- 361
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 3 |
| 2003 | 2 | 4 |
| 2004 | 3 | 3 |
| 2005 | 1 | 4 |
| 2006 | 1 | 4 |
| 2007 | 4 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 4 |
| 2012 | 2 | 3 |
| 2013 | 5 | 10 |
| 2014 | 4 | 12 |
| 2015 | 5 | 14 |
| 2016 | 13 | 4 |
| 2017 | 12 | 4 |
| 2018 | 5 | 12 |
| 2019 | 7 | 3 |
| 2020 | 9 | 11 |
| 2021 | 12 | 12 |
| 2022 | 7 | 16 |
| 2023 | 10 | 9 |
| 2024 | 12 | 12 |
| 2025 | 14 | 13 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Pneumatic system flow balancing architecture and method23 Jun 2026US 12,663,028 B2The Boeing Company
- Hydraulic machine swing system with anti-drift9 Jun 2026US 12,650,003 B2Caterpillar Inc.
- Hydraulic circuit for a patient handling apparatus19 May 2026US 12,629,299 B2Stryker Corporation
- Hydraulic unit24 Mar 2026US 12,584,504 B2Daikin Industries, Ltd.
- Control System of Work Machine19 Mar 2026US 2026/0078567 A1Hitachi Construction Machinery Co., Ltd.
- Hydraulic drive device5 Feb 2026US 2026/0035883 A1Kobelco Construction Machinery Co., Ltd.
- Control system5 Feb 2026US 2026/0035884 A1J. C. Bamford Excavators Limited
- Hydraulic machine swing system with anti-drift29 Jan 2026US 2026/0028797 A1Caterpillar Inc.
- Hydraulic control device, hydraulic circuit control method, and hydraulic device29 Jan 2026US 2026/0029003 A1Kubota Corporation
Most cited
By later US patents
- Hydraulic circuit and control system therefor115US 5,138,838 ACaterpillar Inc. · 1992
- Clutched hydraulic system for a refuse vehicle56US 9,494,170 B2Oshkosh Corporation · 2016
- Hydraulic control system for working machine27US 7,392,653 B2Kobelco Construction Machinery Co., Ltd. · 2008
- Flow rate control apparatus for oil-hydraulic pump25US 5,303,551 ASamsung Heavy Industries Co., Ltd. · 1994
- Low noise hydraulic power unit for an auto-hoist lift25US 6,029,448 AFenner Fluid Power, Inc. · 2000