- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/38 - Pads
Patent holdings for IPC class D21F 1/38
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
|
|---|---|---|
| Bartelmuss, Heinz | 5 |
1 |
| Bartelmuss, Klaus | 11 |
1 |
| Other owners | 0 |