- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 21/04 - Methods or machines specially adapted for the production of tubular articles by casting into moulds by simple casting, the material being neither positively compacted nor forcibly fed
Patent holdings for IPC class B28B 21/04
Total number of patents in this class: 7
10-year publication summary
|
1
|
0
|
2
|
0
|
1
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1
|
1
|
0
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1
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlusselbauer, Ulrich | 5 |
2 |
| NGK Insulators, Ltd. | 4589 |
1 |
| Givent Ltd. | 2 |
1 |
| Ruentex Engineering & Construction Co., Ltd. | 29 |
1 |
| Schlusselbauer, Johann | 6 |
1 |
| Nicoventures Trading Limited | 2898 |
1 |
| Other owners | 0 |