F15B 2201/3152
The flexible separating means being bladders
Official title: the flexible separating means being bladders
F15B2201/3152 (The flexible separating means being bladders) appears on 139 US grants and 84 published applications in this corpus.
Search patents in F15B- Granted patents
- 139
- Published applications
- 84
- Assignees
- 74
- Inventors
- 203
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 4 |
| 2005 | 3 | 3 |
| 2006 | 3 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 1 |
| 2009 | 2 | 6 |
| 2010 | 0 | 3 |
| 2011 | 2 | 2 |
| 2012 | 2 | 6 |
| 2013 | 2 | 4 |
| 2014 | 3 | 6 |
| 2015 | 5 | 2 |
| 2016 | 5 | 3 |
| 2017 | 5 | 5 |
| 2018 | 3 | 6 |
| 2019 | 1 | 3 |
| 2020 | 7 | 7 |
| 2021 | 6 | 5 |
| 2022 | 3 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 2 |
| 2025 | 0 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bladder surge suppressor13 Jan 2026US 12,523,330 B2Young Engineering & Manufacturing, Inc.
- Medical fluid therapy machine including pneumatic pump box and accumulators therefore2 Apr 2024US 11,946,466 B2Baxter Healthcare S. A.
- Diaphragm radial compression ring (DRCRTM) to enhance the sealing ability and service life of the diaphragms used in dampeners/accumulators/pulsation control equipment12 Mar 2024US 11,927,292 B2Performance Pulsation Control, Inc.
- Pressure compensation device designed for underwater applications13 Jun 2023US 11,674,529 B2Robert Bosch GmbH
- Nested pre-charge cartridges12 Jul 2022US 11,384,887 B2Performance Pulsation Control, Inc.
- 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
- Method for checking the state of a hydraulic accumulator16 Oct 2025US 2025/0320882 A1Deere & Company
Most cited
By later US patents
- Hydrostatic bladder-type storage means90US 4,367,786 ADaimler-Benz Aktiengesellschaft · 1983
- Inline bladder-type accumulator for downhole applications61US 7,353,845 B2Smith International, Inc. · 2008
- Pressure vessel49US 4,610,369 A1986
- Pressure vessel incorporating a sensor for detecting liquid in a gas chamber48US 4,788,851 AOlaer Industries · 1988
- Pressure vessel with a bladder43US 4,817,830 AEcodyne Corporation · 1989