- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching
Patent holdings for IPC class B21D 28/02
Total number of patents in this class: 352
10-year publication summary
|
31
|
40
|
37
|
36
|
15
|
24
|
28
|
21
|
33
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsui High-tec, Inc. | 263 |
25 |
| Nippon Steel Corporation | 7098 |
24 |
| JFE Steel Corporation | 7675 |
22 |
| NHK Spring Co., Ltd. | 2028 |
13 |
| TRUMPF Werkzeugmaschinen GmbH + Co. KG | 516 |
11 |
| Feintool International Holding AG | 94 |
8 |
| Kuroda Precision Industries Ltd. | 114 |
8 |
| ThyssenKrupp Steel Europe AG | 997 |
6 |
| Robert Bosch GmbH | 44398 |
5 |
| Nidec Corporation | 2826 |
5 |
| Toyota Motor Corporation | 36389 |
4 |
| Contemporary Amperex Technology Co., Limited | 10616 |
4 |
| Kabushiki Kaisha F.C.C. | 429 |
4 |
| POSCO Mobility Solution Corporation | 21 |
4 |
| Honda Motor Co., Ltd. | 26657 |
3 |
| NTN Corporation | 4935 |
3 |
| Corrada S.p.A. | 23 |
3 |
| Heinrich Georg GmbH Maschinenfabrik | 23 |
3 |
| Hoden Seimitsu Kako Kenkyusho Co., Ltd. | 38 |
3 |
| Nanoprecision Products, Inc. | 29 |
3 |
| Other owners | 191 |