B21D 28/04
Centering the work
Official title: Centering the work; Positioning the tools
B21D28/04 (Centering the work) appears on 77 US grants and 60 published applications in this corpus.
Search patents in B21D- Granted patents
- 77
- Published applications
- 60
- Assignees
- 57
- Inventors
- 169
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 2 |
| 2017 | 4 | 4 |
| 2018 | 2 | 3 |
| 2019 | 2 | 10 |
| 2020 | 3 | 4 |
| 2021 | 6 | 4 |
| 2022 | 7 | 3 |
| 2023 | 3 | 5 |
| 2024 | 2 | 2 |
| 2025 | 3 | 7 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Strip material cutting device and stacking apparatus6 Jan 2026US 12,515,249 B2Guangdong Lyric Robot Automation Co., Ltd.
- Readjustment device and readjustment method for a plate-like workpiece in a processing machine2 Dec 2025US 12,485,468 B2TRUMPF Werkzeugmaschinen GmbH + Co. KG
- Stamping dies and guided retainer devices for use in same8 Jul 2025US 12,350,729 B2Dayton Lamina Corporation
- Manufacturing method of plate member18 Mar 2025US 12,251,747 B2Daiwa Can Company
- Method for offset measure compensation6 Aug 2024US 12,055,911 B2TRUMPF Werkzeugmaschinen GmbH + Co. KG
- Plant for Forming a Polar Plate of a Fuel Cell, and Associated Forming Method9 Jul 2026US 2026/0192350 A1
- Die assembly for notching electrode plate of secondary battery and method of manufacturing die assembly26 Mar 2026US 2026/0084334 A1Samsung SDI.Co., Ltd.
- Press tool holder, press tool, press tool system, press tool machine and method for producing a press moulding and method for adjusting a press tool machine or a press tool holder19 Feb 2026US 2026/0048429 A1KAMAX Holding GmbH & Co. KG
- Secondary battery electrode plate manufacturing apparatus including die parallelism monitoring device and secondary battery electrode plate manufacturing method8 Jan 2026US 2026/0011708 A1Samsung SDI.Co., Ltd.
- Electrode plate notching device18 Dec 2025US 2025/0385291 A1Samsung SDI.Co., Ltd.
Most cited
By later US patents
- Method and apparatus for nibbling cutouts with rectilinear and curvilinear contours by rotation of tooling with cutting surfaces of rectilinear and curvilinear contours and novel tooling therefor46US 4,696,211 ATrumpf GmbH & Co. · 1987
- Punch press with means for rotating the workpiece and method of using same and tooling therefor41US 4,602,541 ATrumpf GmbH & Co. · 1986
- Pilot assembly for progressive die machines30US 4,342,214 A1982
- Plate positioning apparatus28US 4,434,693 ANihon Early Kabushiki Kaisha · 1984
- Portable, power driven punching machine having an aiming beam25US 5,630,277 AKabushiki Kaisha Ogura · 1997