- All sections
- B - Performing operations; transporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; punching metal
- B21D 28/36 - Perforating, i.e. punching holes using rotatable work or tool holders
Patent holdings for IPC class B21D 28/36
Total number of patents in this class: 81
10-year publication summary
|
11
|
6
|
2
|
9
|
4
|
4
|
2
|
3
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amada Company, Limited | 492 |
21 |
| Amada Holdings Co., Ltd. | 297 |
10 |
| Murata Machinery, Ltd. | 1386 |
8 |
| TRUMPF Werkzeugmaschinen GmbH + Co. KG | 585 |
6 |
| Vahterus Oy | 67 |
3 |
| Wilson Tool International Inc. | 159 |
3 |
| GKN EVO EDrive Systems Limited | 9 |
2 |
| Pass Stanztechnik AG | 24 |
2 |
| Trumpf, Inc. | 26 |
2 |
| Denso Corporation | 23338 |
1 |
| NSK Ltd. | 2719 |
1 |
| Formtek, Inc. | 45 |
1 |
| GDX North America Inc. | 18 |
1 |
| Hunkeler AG | 20 |
1 |
| Kiekert Aktiengesellschaft | 1296 |
1 |
| Korea JCC Co., Ltd. | 15 |
1 |
| L'Garde, Inc. | 35 |
1 |
| Metal Industries Research & Development Centre | 174 |
1 |
| Penn Engineering & Manufacturing Corp. | 73 |
1 |
| Quanta Computer Inc. | 1284 |
1 |
| Other owners | 13 |