- All sections
- B - Performing operationstransporting
- 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: 42
10-year publication summary
|
2
|
6
|
5
|
3
|
5
|
2
|
6
|
4
|
3
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Machinery LLC | 43 |
5 |
| BAE SYSTEMS plc | 2505 |
4 |
| Concurrent Technologies Corporation | 51 |
3 |
| Diehl Metall Stiftung & Co. KG | 43 |
3 |
| Luvata Ohio, Inc. | 31 |
3 |
| Matec Co., Ltd. | 2 |
2 |
| Rheinmetall Waffe Munition GmbH | 561 |
2 |
| RUAG Ammotec AG | 47 |
2 |
| Texas Transland LLC | 18 |
2 |
| Innovative Performance Applications, LLC | 3 |
2 |
| AREX Proizvodnja orodij, naprav in storitve d.o.o. Sentjernej | 8 |
1 |
| BIOTRONIK AG | 446 |
1 |
| Federal Cartridge Company | 571 |
1 |
| Giraud Tool Company, Inc. | 2 |
1 |
| Harbin Institute of Technology | 501 |
1 |
| IFM Electronic GmbH | 243 |
1 |
| IMI Systems Ltd. | 39 |
1 |
| Lee Precision, Inc. | 5 |
1 |
| RUAG Ammotec GmbH | 43 |
1 |
| SMS Group GmbH | 1208 |
1 |
| Other owners | 4 |