F15B 2201/315
Having flexible separating means
Official title: having flexible separating means
F15B2201/315 (Having flexible separating means) appears on 424 US grants and 279 published applications in this corpus.
Search patents in F15B- Granted patents
- 424
- Published applications
- 279
- Assignees
- 196
- Inventors
- 622
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 8 | 0 |
| 1978 | 12 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 13 | 0 |
| 1982 | 14 | 0 |
| 1983 | 4 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 2 |
| 2002 | 7 | 7 |
| 2003 | 10 | 9 |
| 2004 | 8 | 19 |
| 2005 | 14 | 11 |
| 2006 | 9 | 7 |
| 2007 | 2 | 7 |
| 2008 | 8 | 5 |
| 2009 | 5 | 11 |
| 2010 | 4 | 8 |
| 2011 | 4 | 5 |
| 2012 | 4 | 13 |
| 2013 | 11 | 7 |
| 2014 | 5 | 13 |
| 2015 | 9 | 12 |
| 2016 | 8 | 11 |
| 2017 | 15 | 11 |
| 2018 | 10 | 19 |
| 2019 | 13 | 13 |
| 2020 | 14 | 21 |
| 2021 | 24 | 15 |
| 2022 | 13 | 16 |
| 2023 | 12 | 11 |
| 2024 | 7 | 9 |
| 2025 | 7 | 12 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2201/3151The flexible separating means being diaphragms or membranesIndexing code149
- F15B 2201/3152The flexible separating means being bladdersIndexing code139
- F15B 2201/3153The flexible separating means being bellowsIndexing code124
- F15B 2201/3156Characterised by their attachmentIndexing code99
- F15B 2201/3158Guides for the flexible separating meansIndexing code48
- F15B 2201/3155Characterised by the material of the flexible separating meansIndexing code22
- F15B 2201/3157Sealings for the flexible separating meansIndexing code15
- F15B 2201/3154The flexible separating means being completely enclosedIndexing code14
Recent patents
- Pressure accumulator1 Sep 2026US 12,723,602 B2Hydac Technology GmbH
- Hydraulic accumulator2 Jun 2026US 12,644,473 B2Hydac Technology GmbH
- Diaphragm for a fluid storage tank17 Mar 2026US 12,576,994 B2Cam Lock Limited
- Bladder surge suppressor13 Jan 2026US 12,523,330 B2Young Engineering & Manufacturing, Inc.
- Device, system and method for isothermal compression, constant-pressure power generation and physical energy storage16 Dec 2025US 12,497,941 B2Northwestern Polytechnical University
- Bladder surge suppressor1 Oct 2026US 2026/0298389 A1Young Engineering & Manufacturing, Inc.
- Integrated Electrohydraulic Actuator30 Jul 2026US 2026/0218734 A1Parker-Hannifin Corporation
- Electro-Hydraulic Actuator Assembly with a Fluid Access Port11 Jun 2026US 2026/0160279 A1Parker-Hannifin Corporation
- Intermediate hydraulic system and method of use30 Apr 2026US 2026/0117802 A1Country Mechanical Services
- Method2 Apr 2026US 2026/0092610 A1Hydac Technology GmbH
Most cited
By later US patents
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Hydrostatic bladder-type storage means90US 4,367,786 ADaimler-Benz Aktiengesellschaft · 1983
- Suspended diaphragm88US 6,295,918 B12001
- Distributed accumulator81US 4,651,781 ANorthrop Corporation · 1987
- Accumulator65US 4,997,009 ANHK Spring Co., Ltd. · 1991