B21D 28/36
Using rotatable work or tool holders
Official title: using rotatable work or tool holders
B21D28/36 (Using rotatable work or tool holders) appears on 64 US grants and 57 published applications in this corpus.
Search patents in B21D- Granted patents
- 64
- Published applications
- 57
- Assignees
- 53
- Inventors
- 118
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 0 | 4 |
| 2010 | 0 | 0 |
| 2011 | 0 | 4 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 4 | 3 |
| 2015 | 0 | 8 |
| 2016 | 7 | 3 |
| 2017 | 4 | 0 |
| 2018 | 4 | 7 |
| 2019 | 5 | 4 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Workpiece transport device23 Jun 2026US 12,661,704 B2Toyota Boshoku Kabushiki Kaisha
- Rotary stamper21 Feb 2023US 11,583,910 B2Formtek, Inc.
- Clinching fastener press-fitting method and fastening jig for use in the press-fitting method7 Feb 2023US 11,571,732 B2Tsuda Kogyo Kabushiki Kaisha
- Multi-dimple orifice disc for a fluid injector, and methods for constructing and utilizing same22 Feb 2022US 11,253,875 B2Vitesco Technologies USA, LLC
- Method and device for manufacturing plate parts for a heat exchanger22 Feb 2022US 11,253,897 B2Vahterus Oy
- Sheet holder for perforating press and method of moving sheet holder6 Aug 2026US 2026/0225145 A1Soenen Technology NV
- Forming punching apparatus20 Nov 2025US 2025/0353066 A1Salvagnini Italia S.p.A.
- Device and system for laying and inserting variable holes in irrigation tubing5 Jun 2025US 2025/0178061 A1Mississippi State University
- Workpiece transport device17 Aug 2023US 2023/0256499 A1Toyota Boshoku Kabushiki Kaisha
- Composite working machine30 Jun 2022US 2022/0203475 A1Murata Machinery, Ltd.
Most cited
By later US patents
- Two stage die set50US 5,722,280 A1998
- Asymmetrical shaping of slit segments of meshes formed in deformable strip46US 4,297,866 ACominco Ltd. · 1981
- Methods of and/or apparatus for punching holes in sheet metal29US 4,317,351 AFisher & Paykel Limited · 1982
- Rotary press with cut off apparatus25US 5,983,693 ARotary Press Systems Inc. · 1999
- Press for punching and cutting plate-shaped workpieces, especially sheet metal workpieces22US 4,250,784 AC. Behrens AG · 1981