- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 21/44 - Methods or machines specially adapted for the production of tubular articles by shaping on or against mandrels or like moulding surfaces by projecting, e.g. spraying
Patent holdings for IPC class B28B 21/44
Total number of patents in this class: 9
10-year publication summary
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1
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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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0
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0
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0
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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
|
|---|---|---|
| Watt Fuel Cell Corp. | 122 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
2 |
| Brayton Energy Canada, Inc. | 3 |
1 |
| Other owners | 0 |