B21D 51/00
Making hollow objects
Official title: Making hollow objects (from thick-walled or non uniform tubes B21K21/00)
B21D51/00 (Making hollow objects) appears on 2,478 US grants and 1,870 published applications in this corpus.
Search patents in B21D- Granted patents
- 2,478
- Published applications
- 1,870
- Assignees
- 982
- Inventors
- 3,767
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 65 | 0 |
| 1977 | 64 | 0 |
| 1978 | 59 | 0 |
| 1979 | 29 | 0 |
| 1980 | 56 | 0 |
| 1981 | 38 | 0 |
| 1982 | 25 | 0 |
| 1983 | 37 | 0 |
| 1984 | 37 | 0 |
| 1985 | 56 | 0 |
| 1986 | 44 | 0 |
| 1987 | 37 | 0 |
| 1988 | 41 | 0 |
| 1989 | 43 | 0 |
| 1990 | 39 | 0 |
| 1991 | 48 | 0 |
| 1992 | 56 | 0 |
| 1993 | 44 | 0 |
| 1994 | 52 | 0 |
| 1995 | 17 | 0 |
| 1996 | 34 | 0 |
| 1997 | 49 | 0 |
| 1998 | 64 | 0 |
| 1999 | 52 | 0 |
| 2000 | 44 | 0 |
| 2001 | 40 | 7 |
| 2002 | 43 | 23 |
| 2003 | 32 | 43 |
| 2004 | 35 | 43 |
| 2005 | 23 | 41 |
| 2006 | 30 | 44 |
| 2007 | 20 | 44 |
| 2008 | 28 | 61 |
| 2009 | 27 | 45 |
| 2010 | 32 | 97 |
| 2011 | 36 | 53 |
| 2012 | 42 | 66 |
| 2013 | 54 | 95 |
| 2014 | 58 | 110 |
| 2015 | 71 | 111 |
| 2016 | 79 | 82 |
| 2017 | 85 | 92 |
| 2018 | 68 | 95 |
| 2019 | 71 | 102 |
| 2020 | 86 | 87 |
| 2021 | 81 | 87 |
| 2022 | 61 | 92 |
| 2023 | 63 | 93 |
| 2024 | 78 | 104 |
| 2025 | 71 | 86 |
| 2026 | 34 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Folding shaft device for a closer, and method for fastening a can lid to a can body8 Sep 2026US 12,728,454 B2Ferrum Packaging AG
- Radial offset monitor1 Sep 2026US 12,722,198 B2Crown Packaging Technology, Inc.
- Method for monitoring sealer25 Aug 2026US 12,715,031 B2Ferrum Packaging AG
- Control device for sealer25 Aug 2026US 12,715,032 B2Ferrum Packaging AG
- Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product11 Aug 2026US 12,703,021 B2Benteler Steel/Tube GmbH
- Apparatus and method for sealing cans17 Sep 2026US 2026/0273611 A1Krones AG
- Punch, a semi-finished can, and a can manufactured with use of the said punch10 Sep 2026US 2026/0264128 A1Canpack S.A.
- A method of reshaping a workpiece, a primary side pressing device, a secondary side pressing device and an arrangement for reshaping a workpiece3 Sep 2026US 2026/0257264 A1Stilfold AB
- Drive assemblies for shell stock feeder assemblies and methods of feeding material into shell presses27 Aug 2026US 2026/0249344 A1Stolle Machinery Company, LLLC
- Equipment and processes for sheet metal consolidation20 Aug 2026US 2026/0241437 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Methods for the manufacture of radially expansible stents748US 5,907,893 AMedtronic, Inc. · 1999
- Method for fabricating a planar eversible lattice which forms a stent when everted532US 6,327,772 B1Medtronic, Inc. · 2001
- Threaded aluminum cans and methods of manufacture181US 5,718,352 AAluminum Company of America · 1998
- Lightweight reclosable can with attached threaded pour spout and methods of manufacture164US 6,010,028 AAluminum Company of America · 2000
- Method of making bottle-shaped metal cans155US 5,822,843 AAluminum Company of America · 1998