- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 5/16 - Drying webs by electrical heating
Patent holdings for IPC class D21F 5/16
Total number of patents in this class: 11
10-year publication summary
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0
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0
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1
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2
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0
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0
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0
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0
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1
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Natural Resources (2000) Limited | 4 |
3 |
| Durr Systems, Inc. | 112 |
2 |
| Siemens AG | 24453 |
1 |
| Kyocera Document Solutions Inc. | 5632 |
1 |
| Alpla Werke Alwin Lehner GmbH & Co. KG | 375 |
1 |
| Metso Paper, Inc. | 422 |
1 |
| Valmet, Inc. | 49 |
1 |
| Astenjohnson International, Inc. | 16 |
1 |
| Other owners | 0 |