- All sections
- B - Performing operationstransporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing materialpunching metal
- B21D 53/18 - Making other particular articles rings, e.g. barrel hoops of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
Patent holdings for IPC class B21D 53/18
Total number of patents in this class: 12
10-year publication summary
|
1
|
2
|
1
|
0
|
0
|
0
|
0
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ElringKlinger AG | 580 |
2 |
| Saint-Gobain Performance Plastics Rencol Limited | 87 |
2 |
| General Electric Company | 13966 |
1 |
| Carl Freudenberg KG | 1495 |
1 |
| Hugo Benzing GmbH & Co. KG | 23 |
1 |
| Newfrey LLC | 569 |
1 |
| NHK Spring Co., Ltd. | 2004 |
1 |
| Otto Bihler Maschinenfabrik GmbH & Co. KG | 8 |
1 |
| Siemens Healthineers AG | 7103 |
1 |
| Nippon Pop Rivets and Fasteners Ltd. | 32 |
1 |
| Other owners | 0 |