- All sections
- B - Performing operations; transporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 21/04 - Shaping thin-walled hollow articles, e.g. cartridges
Patent holdings for IPC class B21K 21/04
Total number of patents in this class: 34
10-year publication summary
|
1
|
2
|
2
|
6
|
5
|
3
|
5
|
2
|
5
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Machinery LLC | 45 |
5 |
| BAE SYSTEMS plc | 2215 |
4 |
| Concurrent Technologies Corporation | 50 |
3 |
| Diehl Metall Stiftung & Co. KG | 50 |
3 |
| Luvata Ohio, Inc. | 34 |
2 |
| Matec Co., Ltd. | 3 |
2 |
| RUAG Ammotec AG | 51 |
2 |
| AREX Proizvodnja orodij, naprav in storitve d.o.o. Sentjernej | 10 |
1 |
| Federal Cartridge Company | 531 |
1 |
| GCG Holdings Ltd | 6 |
1 |
| Giraud Tool Company, Inc. | 2 |
1 |
| Harbin Institute of Technology | 356 |
1 |
| IFM Electronic GmbH | 188 |
1 |
| IMI Systems Ltd. | 37 |
1 |
| Lee Precision, Inc. | 3 |
1 |
| Max Co., Ltd. | 880 |
1 |
| RUAG Ammotec GmbH | 82 |
1 |
| Texas Transland LLC | 10 |
1 |
| US Strategic, LLC | 14 |
1 |
| Vista Outdoor Operations LLC | 511 |
1 |
| Other owners | 0 |