- All sections
- B - Performing operationstransporting
- B28B - Shaping clay or other ceramic compositionsshaping slagshaping mixtures containing cementitious material, e.g. plaster
- B28B 21/58 - Steel tubes
Patent holdings for IPC class B28B 21/58
Total number of patents in this class: 3
10-year publication summary
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0
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0
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0
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0
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0
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0
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2
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0
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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
|
|---|---|---|
| Hawkeye Concrete Products Co. | 6 |
1 |
| Hawkeyepedershaab Concrete Technologies, Inc. | 37 |
1 |
| Lochnagar Consulting AG | 1 |
1 |
| Other owners | 0 |