F16L 55/052
Pneumatic reservoirs
F16L55/052 (Pneumatic reservoirs) appears on 362 US grants and 249 published applications in this corpus.
Search patents in F16L- Granted patents
- 362
- Published applications
- 249
- Assignees
- 218
- Inventors
- 601
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 10 | 0 |
| 2001 | 5 | 1 |
| 2002 | 8 | 6 |
| 2003 | 4 | 8 |
| 2004 | 5 | 8 |
| 2005 | 6 | 11 |
| 2006 | 7 | 2 |
| 2007 | 5 | 7 |
| 2008 | 3 | 10 |
| 2009 | 5 | 3 |
| 2010 | 9 | 6 |
| 2011 | 5 | 5 |
| 2012 | 3 | 5 |
| 2013 | 7 | 10 |
| 2014 | 4 | 10 |
| 2015 | 8 | 11 |
| 2016 | 10 | 11 |
| 2017 | 9 | 16 |
| 2018 | 12 | 23 |
| 2019 | 15 | 17 |
| 2020 | 18 | 22 |
| 2021 | 20 | 14 |
| 2022 | 21 | 13 |
| 2023 | 12 | 13 |
| 2024 | 9 | 8 |
| 2025 | 9 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pressure regulator assembly for a coolant distribution unit10 Feb 2026US 12,547,193 B2Hewlett Packard Enterprise Development LP
- Bladder surge suppressor13 Jan 2026US 12,523,330 B2Young Engineering & Manufacturing, Inc.
- Volume flow rate smoothing device12 Aug 2025US 12,386,370 B2Honeywell International Inc.
- Cool fluid reservoir for a coolant distribution unit27 May 2025US 12,313,089 B2Hewlett Packard Enterprise Development LP
- Hydro-pneumatic pressure vessel and diaphragm assembly method27 May 2025US 12,313,090 B2Flexcon Industries
- Bladder surge suppressor1 Oct 2026US 2026/0298389 A1Young Engineering & Manufacturing, Inc.
- Pressure Diffuser for Use with a Fluid System9 Jul 2026US 2026/0194077 A1The Boeing Company
- Device4 Jun 2026US 2026/0153102 A1Hydac Technology GmbH
- Pulsation damper having a clamping sleeve and method for producing a pulsation damper having a clamping sleeve30 Apr 2026US 2026/0117908 A1Continental Automotive Technologies GmbH
- Expansion Device10 Jul 2025US 2025/0224065 A1Hydac Technology GmbH
Most cited
By later US patents
- Water hammer shock absorber63US 4,186,775 ATozen Sangyo Co., Ltd. · 1980
- Well pressure tank59US 6,328,071 B12001
- Adaptive hydropneumatic pulsation damper52US 5,797,430 AMercedes-Benz AG · 1998
- Expansion tank diaphragm assembly50US 3,931,834 AThe Goodyear Tire & Rubber Company · 1976
- Split tank closure and diaphragm assembly45US 4,595,037 AEssef Industries, Inc. · 1986