- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 28/34 - Perforating toolsDie holders
Patent holdings for IPC class B21D 28/34
Total number of patents in this class: 326
10-year publication summary
|
22
|
30
|
34
|
35
|
26
|
28
|
37
|
21
|
16
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wilson Tool International Inc. | 158 |
25 |
| TRUMPF Werkzeugmaschinen GmbH + Co. KG | 548 |
20 |
| Milwaukee Electric Tool Corporation | 4338 |
17 |
| Nippon Steel Corporation | 6207 |
15 |
| Amada Holdings Co., Ltd. | 280 |
10 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
6 |
| Amada Company, Limited | 558 |
6 |
| Mate Precision Tooling, Inc. | 32 |
6 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
6 |
| Salvagnini Italia S.p.A. | 53 |
6 |
| Greenlee Tools, Inc. | 205 |
6 |
| Standard Lifters, Inc. | 96 |
5 |
| Mate Precision Technologies Inc. | 39 |
5 |
| Amada Tool America, Inc. | 8 |
4 |
| Murata Machinery, Ltd. | 1494 |
4 |
| Oiles Corporation | 513 |
4 |
| ONES Co., Ltd. | 4 |
4 |
| Toyota Boshoku Kabushiki Kaisha | 1395 |
4 |
| Bayerische Motoren Werke Aktiengesellschaft | 14278 |
3 |
| Dayton Progress Corporation | 32 |
3 |
| Other owners | 167 |