- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 28/16 - Shoulder or burr prevention
Patent holdings for IPC class B21D 28/16
Total number of patents in this class: 146
10-year publication summary
|
17
|
12
|
11
|
12
|
9
|
7
|
5
|
10
|
6
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6271 |
18 |
| Feintool International Holding AG | 97 |
14 |
| Robert Bosch GmbH | 42677 |
13 |
| TRUMPF Werkzeugmaschinen GmbH + Co. KG | 548 |
5 |
| Lapmaster Wolters GmbH | 36 |
4 |
| NHK Spring Co., Ltd. | 1864 |
4 |
| ZF Friedrichshafen AG | 7149 |
3 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 21070 |
3 |
| Kuroda Precision Industries Ltd. | 112 |
3 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
3 |
| Toyota Boshoku Kabushiki Kaisha | 1407 |
3 |
| Honda Motor Co., Ltd. | 25301 |
2 |
| NSK Ltd. | 2782 |
2 |
| Centre Technique des Industries Mecaniques | 70 |
2 |
| Hugo Benzing GmbH & Co. KG | 23 |
2 |
| Inter-University Research Institute Corporation High Energy Accelerator Research Organization | 64 |
2 |
| JX Nippon Mining & Metals Corporation | 1488 |
2 |
| Komatsu Seiki Kosakusho Co., Ltd. | 12 |
2 |
| Murata Machinery, Ltd. | 1502 |
2 |
| National Institute for Materials Science | 1103 |
2 |
| Other owners | 55 |