F15B 2201/32
Having multiple separating means
Official title: having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof
F15B2201/32 (Having multiple separating means) appears on 84 US grants and 74 published applications in this corpus.
Search patents in F15B- Granted patents
- 84
- Published applications
- 74
- Assignees
- 63
- Inventors
- 170
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 5 |
| 2004 | 4 | 3 |
| 2005 | 1 | 2 |
| 2006 | 3 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 4 |
| 2010 | 3 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 4 |
| 2013 | 2 | 2 |
| 2014 | 0 | 3 |
| 2015 | 4 | 4 |
| 2016 | 2 | 3 |
| 2017 | 4 | 4 |
| 2018 | 2 | 5 |
| 2019 | 4 | 5 |
| 2020 | 5 | 3 |
| 2021 | 1 | 3 |
| 2022 | 4 | 6 |
| 2023 | 4 | 6 |
| 2024 | 3 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pressure regulator assembly for a coolant distribution unit10 Feb 2026US 12,547,193 B2Hewlett Packard Enterprise Development LP
- Device, system and method for isothermal compression, constant-pressure power generation and physical energy storage16 Dec 2025US 12,497,941 B2Northwestern Polytechnical University
- Cool fluid reservoir for a coolant distribution unit27 May 2025US 12,313,089 B2Hewlett Packard Enterprise Development LP
- Pressure regulator assembly for a coolant distribution unit1 Oct 2024US 12,105,538 B2Hewlett Packard Enterprise Development LP
- Dual gas pressure accumulator system9 Jul 2024US 12,031,556 B2Deere & Company
- Load dampening system13 Aug 2026US 2026/0235142 A1J. C. Bamford Excavators Limited
- Pressure regulator assembly for a coolant distribution unit9 Jan 2025US 2025/0013253 A1Hewlett Packard Enterprise Development LP
- Dual gas pressure accumulator system31 Oct 2024US 2024/0360846 A1Deere & Company
- Device, system and method for isothermal compression, constant-pressure power generation and physical energy storage15 Aug 2024US 2024/0271590 A1Northwestern Polytechnical University
- Pressure regulator assembly for a coolant distribution unit22 Feb 2024US 2024/0061453 A1Hewlett Packard Enterprise Development LP
Most cited
By later US patents
- Hydrostatic bladder-type storage means90US 4,367,786 ADaimler-Benz Aktiengesellschaft · 1983
- Method for arranging a separating piston in a cavity and a device with such a separating piston69US 7,975,814 B2Ohlins Racing AB · 2011
- Subsea accumulator and method of operation of same64US 6,202,753 B12001
- Adaptive hydropneumatic pulsation damper52US 5,797,430 AMercedes-Benz AG · 1998
- Pressure vessel49US 4,610,369 A1986