F15B 15/1457
Piston rods
Official title: {Piston rods (F15B15/1447 takes precedence)}
F15B15/1457 (Piston rods) appears on 237 US grants and 290 published applications in this corpus.
Search patents in F15B- Granted patents
- 237
- Published applications
- 290
- Assignees
- 192
- Inventors
- 590
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 3 | 9 |
| 2006 | 2 | 3 |
| 2007 | 2 | 4 |
| 2008 | 4 | 5 |
| 2009 | 3 | 7 |
| 2010 | 4 | 9 |
| 2011 | 2 | 6 |
| 2012 | 4 | 9 |
| 2013 | 3 | 3 |
| 2014 | 3 | 6 |
| 2015 | 4 | 22 |
| 2016 | 8 | 22 |
| 2017 | 12 | 22 |
| 2018 | 22 | 22 |
| 2019 | 28 | 28 |
| 2020 | 21 | 22 |
| 2021 | 21 | 15 |
| 2022 | 13 | 10 |
| 2023 | 12 | 14 |
| 2024 | 10 | 22 |
| 2025 | 17 | 12 |
| 2026 | 9 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sealing device and back-up ring25 Aug 2026US 12,716,494 B2Nok Corporation
- Performance testing device for piston rod sealing assembly16 Jun 2026US 12,656,220 B2Tsinghua University
- Cylinder/piston assembly with eccentric piston rod2 Jun 2026US 12,644,478 B2Weber-Hydraulik GmbH
- Working cylinder31 Mar 2026US 12,590,595 B2BüMach Engineering International B. V.
- Stability and control augmentation system actuator10 Mar 2026US 12,570,393 B2Microtecnica S.R.L.
- Leakage cause discrimination system and leakage cause discrimination method20 Aug 2026US 2026/0243281 A1KYB Corporation
- Two-part piston hydraulic tool13 Aug 2026US 2026/0233373 A1
- Cylinder device13 Aug 2026US 2026/0235143 A1SMC Corporation
- Fluid pressure cylinder2 Jul 2026US 2026/0185549 A1KYB Corporation
- Retraction mechanism and dimension-measuring device provided with same16 Apr 2026US 2026/0104063 A1Tokyo Seimitsu Co., Ltd.
Most cited
By later US patents
- Apparatus for determining the position of a movable mechanical element and method of marking a mechanical element50US 6,452,158 B1J. C. Bamford Excavators Limited · 2002
- Jam proof piston30US 4,211,151 AUnited Technologies Corporation · 1980
- Concrete block mold with moveable liner19US 7,261,548 B2Haberman Machine · 2007
- Mounting assembly and method for reciprocating slat conveyor16US 5,390,781 A1995
- Gate valve actuator override mechanism16US 6,352,239 B1FMC Corporation · 2002