B21K 21/12
Shaping end portions of hollow articles
B21K21/12 (Shaping end portions of hollow articles) appears on 182 US grants and 138 published applications in this corpus.
Search patents in B21K- Granted patents
- 182
- Published applications
- 138
- Assignees
- 138
- Inventors
- 399
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 7 |
| 2003 | 6 | 5 |
| 2004 | 3 | 6 |
| 2005 | 4 | 10 |
| 2006 | 4 | 5 |
| 2007 | 3 | 5 |
| 2008 | 4 | 7 |
| 2009 | 7 | 4 |
| 2010 | 4 | 6 |
| 2011 | 3 | 6 |
| 2012 | 1 | 4 |
| 2013 | 1 | 9 |
| 2014 | 5 | 2 |
| 2015 | 9 | 8 |
| 2016 | 3 | 3 |
| 2017 | 9 | 2 |
| 2018 | 1 | 11 |
| 2019 | 4 | 5 |
| 2020 | 10 | 4 |
| 2021 | 4 | 8 |
| 2022 | 7 | 8 |
| 2023 | 10 | 5 |
| 2024 | 7 | 3 |
| 2025 | 2 | 3 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Headlight and display integrated stem of electric bicycle, and electric bicycle26 May 2026US 12,637,162 B2
- Equipment and method for forming a front toothing on an inner ring of a wheel hub12 May 2026US 12,623,273 B2Aktiebolaget Skf
- Method and tool for producing a base piece of a multi-part cartridge case, base piece and cartridge case14 Apr 2026US 12,601,573 B2Ruag Ammotec GmbH
- Material dispense tips20 May 2025US 12,303,929 B1DL Technology, LLC.
- Equipment and method for forming a front toothing on an inner ring of a wheel hub23 Jul 2026US 2026/0208259 A1
- Method of manufacturing stabilizer and base material26 Jun 2025US 2025/0205773 A1NHK Spring Co., Ltd.
- Non-magnetic fine stainless steel processed product and method for manufacturing the same19 Jun 2025US 2025/0195270 A1Terakata Manufacturing Co., Ltd,
- Tapered material manufacturing method10 Apr 2025US 2025/0114839 A1Proterial, Ltd.
- Method and tool for producing a base piece of a multi-part cartridge case, base piece and cartridge case14 Nov 2024US 2024/0377172 A1Ruag Ammotec GmbH
Most cited
By later US patents
- Medical suturing device, a single-strike die mechanism, and a method of using said die mechanism for forming the medical suturing device158US 5,411,521 AAmerican Cyanamid Company · 1995
- Method of necking and impact extruded metal container103US 5,572,893 A1996
- Method of manufacturing a hollow point bullet65US 5,943,749 AThe Nippert Company · 1999
- Process for obtaining a hermetic connection for rigid tube51US 5,131,145 AParker Hannifin RAK SA · 1992
- Metal injection molded cased telescoped ammunition46US 10,871,361 B2Concurrent Technologies Corporation · 2020