F15B 2201/3153
The flexible separating means being bellows
Official title: the flexible separating means being bellows
F15B2201/3153 (The flexible separating means being bellows) appears on 124 US grants and 116 published applications in this corpus.
Search patents in F15B- Granted patents
- 124
- Published applications
- 116
- Assignees
- 54
- Inventors
- 210
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 2 |
| 2002 | 5 | 5 |
| 2003 | 9 | 6 |
| 2004 | 6 | 12 |
| 2005 | 8 | 6 |
| 2006 | 4 | 2 |
| 2007 | 0 | 3 |
| 2008 | 5 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 6 |
| 2011 | 1 | 1 |
| 2012 | 1 | 3 |
| 2013 | 6 | 1 |
| 2014 | 1 | 4 |
| 2015 | 2 | 3 |
| 2016 | 2 | 8 |
| 2017 | 8 | 1 |
| 2018 | 4 | 8 |
| 2019 | 6 | 6 |
| 2020 | 4 | 7 |
| 2021 | 9 | 6 |
| 2022 | 6 | 7 |
| 2023 | 4 | 3 |
| 2024 | 2 | 4 |
| 2025 | 4 | 10 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pressure accumulator1 Sep 2026US 12,723,602 B2Hydac Technology GmbH
- Separator and hydraulic accumulator having such a separator2 Sep 2025US 12,404,879 B2Hydac Technology GmbH
- Bellows accumulator fixation apparatus for suspension dampers18 Feb 2025US 12,227,047 B2DRiV Automotive Inc.
- Method of charging a bellows accumulator7 Jan 2025US 12,188,492 B1DRiV Automotive Inc.
- Method of assembling a bellows accumulator for suspension dampers7 Jan 2025US 12,188,540 B2DRiV Automotive Inc.
- Separator and Hydraulic Accumulator Having Such a Separator25 Dec 2025US 2025/0389283 A1Hydac Technology GmbH
- Method for checking the state of a hydraulic accumulator16 Oct 2025US 2025/0320882 A1Deere & Company
- Bellows Accumulator2 Oct 2025US 2025/0305520 A1Hydac Technology GmbH
- Accumulator3 Jul 2025US 2025/0215905 A1NHK Spring Co., Ltd.
- Cap bellows assembly and accumulator8 May 2025US 2025/0146513 A1NHK Spring Co., Ltd.
Most cited
By later US patents
- Accumulator65US 4,997,009 ANHK Spring Co., Ltd. · 1991
- 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
- Thin wall, high pressure, volume compensator46US 6,076,557 ASenior Engineering Investments AG · 2000