F15B 2201/411
Having valve means
Official title: having valve means
F15B2201/411 (Having valve means) appears on 243 US grants and 114 published applications in this corpus.
Search patents in F15B- Granted patents
- 243
- Published applications
- 114
- Assignees
- 117
- Inventors
- 356
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 11 | 0 |
| 1982 | 11 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 1 |
| 2002 | 5 | 7 |
| 2003 | 6 | 5 |
| 2004 | 7 | 14 |
| 2005 | 8 | 5 |
| 2006 | 5 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 3 |
| 2013 | 1 | 6 |
| 2014 | 3 | 5 |
| 2015 | 4 | 6 |
| 2016 | 1 | 6 |
| 2017 | 7 | 4 |
| 2018 | 5 | 7 |
| 2019 | 8 | 7 |
| 2020 | 5 | 6 |
| 2021 | 7 | 2 |
| 2022 | 2 | 5 |
| 2023 | 4 | 4 |
| 2024 | 3 | 6 |
| 2025 | 4 | 6 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adaptive repressurizer26 May 2026US 12,638,026 B2Saudi Arabian Oil Company
- Hydraulic pressure control unit19 May 2026US 12,630,131 B2Robert Bosch GmbH
- Oil drain valve, energy accumulation device, hydraulic system and working machine5 May 2026US 12,618,423 B2Sany Autmobile Manufacturing Co. Ltd
- Mechanism for regulating high pressure industrial air using double layer electromagnetic valves28 Apr 2026US 12,612,928 B2Viettel Group
- Drop-in signal accumulator piston kit and method for replacing an original equipment signal accumulator piston28 Apr 2026US 12,612,929 B2Sonnax Transmission Company
- Medium pressure accumulator with fast fill supply valve and brake system using same21 May 2026US 2026/0138577 A1ZF Active Safety US Inc.
- Bellows Accumulator2 Oct 2025US 2025/0305520 A1Hydac Technology GmbH
- Drop-in signal accumulator piston kit and method for replacing an original equipment signal accumulator piston10 Jul 2025US 2025/0223977 A1Sonnax Transmission Company
- Piston Accumulator10 Jul 2025US 2025/0223978 A1Hydac Technology GmbH
- Pressure pulse generation15 May 2025US 2025/0155089 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Adaptive hydropneumatic pulsation damper52US 5,797,430 AMercedes-Benz AG · 1998
- Accumulator51US 6,789,576 B2NHK Spring Co., Ltd. · 2004
- Pressure vessel49US 4,610,369 A1986
- Hydraulic accumulator with dividing wall supported by connecting and retaining parts46US 5,427,152 AHydac Technology GmbH · 1995
- Accumulator45US 4,799,048 AJidosha Kabushiki Kaisha · 1989