- All sections
- B - Performing operationstransporting
- B21F - Working or processing of metal wire
- B21F 37/02 - Manufacture of rings from wire or resilient rings, e.g. key-rings
Patent holdings for IPC class B21F 37/02
Total number of patents in this class: 7
10-year publication summary
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0
|
0
|
2
|
2
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0
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1
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0
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1
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Compagnie Generale des Etablissements Michelin | 4970 |
2 |
| Compagnie générale des établissements Michelin SCA | 2716 |
1 |
| BeijingWest Industries, Co., Ltd. | 158 |
1 |
| Fujikoki Corporation | 415 |
1 |
| Hugo Benzing GmbH & Co. KG | 23 |
1 |
| TPR Co., Ltd. | 171 |
1 |
| Other owners | 0 |