B21D 28/26
In sheets or flat parts
Official title: in sheets or flat parts
B21D28/26 (In sheets or flat parts) appears on 340 US grants and 454 published applications in this corpus.
Search patents in B21D- Granted patents
- 340
- Published applications
- 454
- Assignees
- 288
- Inventors
- 912
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 3 |
| 2003 | 5 | 4 |
| 2004 | 3 | 9 |
| 2005 | 3 | 4 |
| 2006 | 7 | 10 |
| 2007 | 3 | 8 |
| 2008 | 6 | 9 |
| 2009 | 0 | 18 |
| 2010 | 7 | 9 |
| 2011 | 6 | 12 |
| 2012 | 10 | 11 |
| 2013 | 7 | 10 |
| 2014 | 3 | 6 |
| 2015 | 8 | 13 |
| 2016 | 8 | 14 |
| 2017 | 14 | 22 |
| 2018 | 7 | 26 |
| 2019 | 31 | 35 |
| 2020 | 18 | 39 |
| 2021 | 28 | 35 |
| 2022 | 27 | 29 |
| 2023 | 27 | 26 |
| 2024 | 28 | 33 |
| 2025 | 14 | 47 |
| 2026 | 13 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing a motor vehicle component by hot-forming with integrated cut8 Sep 2026US 12,728,453 B2Benteler Automobiltechnik GmbH
- System for accurately punching holes in a profile and its method18 Aug 2026US 12,708,936 B2Soenen Technology NV
- Hitch and method of manufacture26 May 2026US 12,636,921 B2Gen-Y Creations, LLC
- Speaker grille for vehicle and manufacturing method thereof26 May 2026US 12,641,356 B2Hyundai Motor Company
- Methods and systems for secure connections in layer segments of cut layer additive parts14 Apr 2026US 12,599,952 B2Thermwood Corporation
- Method for measuring flatness deviations and curvature directions of components in a punching machine3 Sep 2026US 2026/0259030 A1TRUMPF Werkzeugmaschinen GmbH + Co. KG
- Sheet holder for perforating press and method of moving sheet holder6 Aug 2026US 2026/0225145 A1Soenen Technology NV
- Knockout tools6 Aug 2026US 2026/0225279 A1Black & Decker Inc.
- Methods and systems for secure connections in layer segments of cut layer additive parts30 Jul 2026US 2026/0216777 A1Thermwood Corporation
- Plant for Forming a Polar Plate of a Fuel Cell, and Associated Forming Method9 Jul 2026US 2026/0192350 A1
Most cited
By later US patents
- Computer controlled machine for punching and thermal cutting of workpieces51US 4,698,480 ATrumpf GmbH & Co. · 1987
- Punch press with cutting torch45US 4,063,059 AW. A. Whitney Corp. · 1977
- Automated dimpling apparatus39US 5,673,585 A1997
- Punch press with tool changer35US 5,669,866 AW. A. Whitney Corp. · 1997
- Method for press punching a hole in sheet metal and press die26US 8,087,333 B2Oiles Corporation · 2012