B21J 15/20
Operated by hydraulic or liquid pressure
Official title: operated by hydraulic or liquid pressure
B21J15/20 (Operated by hydraulic or liquid pressure) appears on 89 US grants and 66 published applications in this corpus.
Search patents in B21J- Granted patents
- 89
- Published applications
- 66
- Assignees
- 47
- Inventors
- 141
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 1 |
| 2005 | 3 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 2 |
| 2008 | 3 | 0 |
| 2009 | 2 | 4 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 3 | 3 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 3 | 0 |
| 2016 | 0 | 4 |
| 2017 | 5 | 4 |
| 2018 | 2 | 3 |
| 2019 | 3 | 3 |
| 2020 | 4 | 6 |
| 2021 | 2 | 6 |
| 2022 | 7 | 5 |
| 2023 | 7 | 2 |
| 2024 | 3 | 2 |
| 2025 | 3 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Piston-type oil tank with safety valve and a riveting tool30 Jun 2026US 12,667,883 B2Meishan Crrc Fastening System Co., Ltd.
- Ergonomic riveting tool system2 Jun 2026US 12,643,142 B2The Boeing Company
- Electro-hydraulic riveting tool18 Nov 2025US 12,472,552 B1Meishan Crrc Fastening System Co., Ltd.
- Riveting apparatus capable of preventing fastening omission and riveting method using the same7 Oct 2025US 12,434,294 B2LG Energy Solution, Ltd.
- System and method for drilling holes and installing fasteners in vehicle structures23 Sep 2025US 12,420,330 B2Spirit AeroSystems, Inc.
- Semi-Truck Brake Shoe Riveter26 Mar 2026US 2026/0084205 A1
- Setting device for a blind rivet nut8 Jan 2026US 2026/0008093 A1Bollhoff Otalu S.A.
- Piston-type oil tank with safety valve and a riveting tool8 Jan 2026US 2026/0008094 A1Meishan Crrc Fastening System Co., Ltd.
- Riveting device with a compact design6 Nov 2025US 2025/0339895 A1SFS Group Germany GmbH
- Dual-branch combined plunger pump with built-in oil circuit and riveting tool30 Oct 2025US 2025/0332634 A1Sichuan Tengfeike Technology Co., Ltd
Most cited
By later US patents
- Hydraulic pressing device and method for operating the same68US 6,276,186 B1Gustav Klauke GmbH · 2001
- Hydraulic pressing device and method for operating the same38US 6,401,515 B2Gustav Klauke GmbH · 2002
- Hydraulic pressing and/or cutting tool and mechanism for converting a rotary motion into a translational oscillating motion for this tool36US 8,276,430 B2Cembre S.p.A. · 2012
- Hand-tool system for installing blind fasteners34US 5,425,164 ATextron Inc. · 1995
- Method of operating a hydraulic pressing unit, and hydraulic pressing unit having a hydraulic pump31US 7,908,963 B2Gustav Klauke GmbH · 2011