F15B 15/1438
Cylinder to end cap assemblies
Official title: {Cylinder to end cap assemblies}
F15B15/1438 (Cylinder to end cap assemblies) appears on 184 US grants and 153 published applications in this corpus.
Search patents in F15B- Granted patents
- 184
- Published applications
- 153
- Assignees
- 139
- Inventors
- 342
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 2 |
| 2003 | 2 | 4 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 5 | 5 |
| 2007 | 1 | 5 |
| 2008 | 4 | 7 |
| 2009 | 2 | 2 |
| 2010 | 1 | 3 |
| 2011 | 4 | 5 |
| 2012 | 3 | 2 |
| 2013 | 0 | 3 |
| 2014 | 5 | 4 |
| 2015 | 3 | 8 |
| 2016 | 2 | 6 |
| 2017 | 7 | 9 |
| 2018 | 10 | 12 |
| 2019 | 7 | 14 |
| 2020 | 9 | 8 |
| 2021 | 18 | 9 |
| 2022 | 6 | 3 |
| 2023 | 2 | 9 |
| 2024 | 6 | 3 |
| 2025 | 10 | 16 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Auto-compensation-type guide device for moving coil of large-scale vibration table and operation method thereof29 Sep 2026US 12,747,783 B2China University of Mining and Technology
- Actuator assembly for a heavy construction machine25 Aug 2026US 12,716,429 B2Wipro Enterprises Pvt Ltd
- Magnetic coupling pneumatic linear motion actuator2 Jun 2026US 12,644,476 B2
- Control system21 Apr 2026US 12,607,209 B2Goodrich Actuation Systems Limited
- Seal plate method for communicating retract oil to retract side of piston in hydraulic cylinder7 Apr 2026US 12,595,811 B2Rosenboom Machine & Tool, Inc.
- Dual-wall cylinder for fluid control device actuator13 Aug 2026US 2026/0235144 A1
- Cylinder16 Jul 2026US 2026/0201910 A1Festo AG & Co.
- Cylinder device9 Jul 2026US 2026/0194081 A1SMC Corporation
- Auto-compensation-type guide device for moving coil of large-scale vibration table and operation method thereof9 Jul 2026US 2026/0194136 A1China University of Mining and Technology
- Fluid pressure cylinder26 Mar 2026US 2026/0085705 A1KYB Corporation
Most cited
By later US patents
- Hydraulic and pneumatic cylinder construction106US 6,439,103 B1Vector Engineering Co. · 2002
- Hydraulic cylinder65US 4,003,297 ADu-Al Manufacturing Company · 1977
- Removable end plug32US 7,240,607 B2Polygon Company · 2007
- End cap for fluid cylinder31US 4,532,856 ATayco Developments, Inc. · 1985
- Device for connecting the ends of a composite tube subjected to severe axial stress with metallic collars and manufacturing process therefor25US 5,082,314 ASociete Nationale Industrielle et Aerospatiale · 1992