B21K 21/06
Shaping thick-walled hollow articles
Official title: Shaping thick-walled hollow articles, e.g. projectiles
B21K21/06 (Shaping thick-walled hollow articles) appears on 34 US grants and 19 published applications in this corpus.
Search patents in B21K- Granted patents
- 34
- Published applications
- 19
- Assignees
- 27
- Inventors
- 66
- Latest grant
- 20 Jan 2026
Filings by year
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| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tool and method for producing a projectile and projectile20 Jan 2026US 12,529,549 B2RWS GmbH
- Tubular element for gas pressure vessel, gas pressure vessel and method of manufacturing a tubular element16 Jan 2024US 11,873,944 B2Benteler Steel/Tube GmbH
- Method for manufacturing cold-forged, extruded aluminum alloy tube2 May 2023US 11,638,943 B2Jin Yuncheng Enterprise Co., Ltd.
- Method for forming a moulding and moulding28 Feb 2023US 11,590,546 B2Neuman Aluminium Fliesspresswerk GmbH
- Preparation method of uniform low stress cone shaped charge liner13 Dec 2022US 11,525,652 B2No.59 Research Institute of China Ordnance Industry
- Tool and method for producing a projectile and projectile20 Jun 2024US 2024/0200918 A1RWS GmbH
- Plated expanding bullet and method of manufacturing the bullet29 Jul 2021US 2021/0231423 A1
- Method for manufacturing cold-forged, extruded aluminum alloy tube15 Oct 2020US 2020/0324328 A1Jin Yuncheng Enterprise Co., Ltd.
- Tubular element for gas pressure vessel, gas pressure vessel and method of manufacturing a tubular element26 Mar 2020US 2020/0094773 A1Benteler Steel/Tube GmbH
- Ring molded article manufacturing method and ring material19 Mar 2020US 2020/0088057 A1Hitachi Metals, Ltd.
Most cited
By later US patents
- Intermediate article used to form a bullet projectile or component and a finally formed bullet70US 5,259,320 ABarnes Bullets, Inc. · 1993
- Method of manufacturing a hollow point bullet65US 5,943,749 AThe Nippert Company · 1999
- Methods of manufacturing a bullet61US 5,131,123 ABarnes Bullets, Inc. · 1992
- Apparatus and method for cold forming a ring on a lead alloy battery terminal including an anti-torque structure38US 5,791,183 ATulip Corporation · 1998
- Apparatus and method for cold forming a ring on a lead alloy battery terminal30US 5,632,173 ATulip Corporation · 1997