- All sections
- D - Textilespaper
- D01H - Spinning or twisting
- D01H 4/04 - Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from sliversPiecing arrangements thereforCovering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
Patent holdings for IPC class D01H 4/04
Total number of patents in this class: 2
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Teijin Aramid B.V. | 169 |
2 |
| Other owners | 0 |