- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 26/045 - Closing or sealing means
Patent holdings for IPC class B21D 26/045
Total number of patents in this class: 40
10-year publication summary
|
3
|
5
|
6
|
1
|
3
|
2
|
3
|
1
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Heavy Industries, Ltd. | 1957 |
12 |
| Belvac Production Machinery, Inc. | 154 |
5 |
| Dalian University of Technology | 1533 |
2 |
| Nippon Steel Corporation | 6396 |
2 |
| Olympus Winter & Ibe GmbH | 695 |
2 |
| ThyssenKrupp Steel Europe AG | 961 |
2 |
| Ford Global Technologies, LLC | 20755 |
1 |
| CRIPPA S.p.A. | 11 |
1 |
| Heraeus Medical GmbH | 310 |
1 |
| National Research Council of Canada | 1552 |
1 |
| Norsk Hydro ASA | 261 |
1 |
| POSCO | 2179 |
1 |
| Salzgitter Mannesmann Line Pipe GmbH | 15 |
1 |
| Standard Lifters, Inc. | 96 |
1 |
| ThyssenKrupp Presta Teccenter AG | 232 |
1 |
| Qingdao Scan Equipment Technology Co., Ltd. | 2 |
1 |
| Citadel Casing Solutions, LLC | 33 |
1 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6121 |
1 |
| Fachhochschule Koln | 7 |
1 |
| ZS Zylinder-service GmbH | 1 |
1 |
| Other owners | 1 |