- 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 28/22 - Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines
Patent holdings for IPC class B21D 28/22
Total number of patents in this class: 69
10-year publication summary
|
10
|
3
|
6
|
2
|
11
|
8
|
5
|
5
|
4
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
12 |
| Mitsui High-tec, Inc. | 265 |
11 |
| HSF Automation GmbH | 9 |
5 |
| Corrada S.p.A. | 20 |
4 |
| Ernesto Malvestiti S.p.A. | 14 |
3 |
| Voestalpine Stahl GmbH | 311 |
3 |
| Müller Weingarten AG | 41 |
3 |
| Panasonic Corporation | 20786 |
2 |
| Feintool International Holding AG | 113 |
2 |
| JFE Steel Corporation | 6067 |
2 |
| Toyota Boshoku Kabushiki Kaisha | 1304 |
2 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
2 |
| Toyota Motor Corporation | 28582 |
1 |
| GM Global Technology Operations LLC | 13620 |
1 |
| Ford Global Technologies, LLC | 19702 |
1 |
| Nissan Motor Co., Ltd. | 12249 |
1 |
| Schaeffler Technologies AG & Co. KG | 8880 |
1 |
| Board of Regents, The University of Texas System | 5370 |
1 |
| AIDA Engineering, Ltd. | 127 |
1 |
| Ged Integrated Solutions, Inc. | 131 |
1 |
| Other owners | 10 |