- 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 51/20 - Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like barrels
Patent holdings for IPC class B21D 51/20
Total number of patents in this class: 7
10-year publication summary
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0
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0
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0
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1
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0
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0
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0
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1
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1
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Greif International Holding B.V. | 104 |
2 |
| Vaasaball LNG Products Oy | 3 |
2 |
| Suzhou Hycan Holdings Co., Ltd. | 25 |
1 |
| KOSONEN, Maarit | 1 |
1 |
| Suzhou Huayuan Zhonglu Packaging Co., Ltd. | 2 |
1 |
| Other owners | 0 |