B21K 21/04
Shaping thin-walled hollow articles
Official title: Shaping thin-walled hollow articles, e.g. cartridges
B21K21/04 (Shaping thin-walled hollow articles) appears on 43 US grants and 32 published applications in this corpus.
Search patents in B21K- Granted patents
- 43
- Published applications
- 32
- Assignees
- 28
- Inventors
- 62
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 3 | 4 |
| 2016 | 2 | 0 |
| 2017 | 2 | 3 |
| 2018 | 1 | 4 |
| 2019 | 4 | 1 |
| 2020 | 2 | 3 |
| 2021 | 3 | 3 |
| 2022 | 4 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 2 |
| 2025 | 5 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two-part polymer ammunition casing14 Oct 2025US 12,442,626 B2Innovative Performance Applications, LLC
- Stainless steel spray boom for aerial spraying16 Sep 2025US 12,415,192 B2Texas Transland LLC
- Base part for producing a cartridge case and cartridge case, method for producing a base part for a cartridge case, and method for producing a cartridge case22 Jul 2025US 12,366,438 B2Diehl Metall Stiftung & Co. KG
- Boron steel high-pressure cartridge case1 Apr 2025US 12,263,521 B2Luvata Ohio, Inc.
- Ammunition cartridge1 Apr 2025US 12,264,903 B2Rabuffo SA
- Stainless Steel Spray Boom for Aerial Spraying1 Jan 2026US 2026/0001089 A1Texas Transland LLC
- Long cartridge case11 Dec 2025US 2025/0375805 A1The National Machinery Company
- High-pressure cartridge case31 Jul 2025US 2025/0242403 A1Luvata Ohio, Inc.
- Ammunition cartridge23 Jan 2025US 2025/0027755 A1Rabuffo SA
- Two-part polymer ammunition casing5 Dec 2024US 2024/0401919 A1Innovative Performance Applications, LLC
Most cited
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- Small arms projectile46US 4,517,897 ASchweizerische Eidgenossenschaft, Vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe fur Rustungsdienste · 1985
- Pressed head34US 11,125,540 B2BAE SYSTEMS plc · 2021
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