- All sections
- C - Chemistrymetallurgy
- C08B - Polysaccharidesderivatives thereof
- C08B 3/28 - Isolation of the cellulose ester by precipitation
Patent holdings for IPC class C08B 3/28
Total number of patents in this class: 21
10-year publication summary
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1
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0
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1
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1
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3
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2
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2
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1
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daicel Corporation | 2603 |
4 |
| Eastman Chemical Company | 2109 |
4 |
| Wool Research Organisation of New Zealand (Inc.) | 16 |
3 |
| Nantong Cellulose Fibers Co., Ltd. | 17 |
2 |
| Shin-Etsu Chemical Co., Ltd. | 6173 |
1 |
| Dow Global Technologies LLC | 11090 |
1 |
| Celanese International Corporation | 884 |
1 |
| Solvay Acetow GmbH | 25 |
1 |
| Ticona LLC | 602 |
1 |
| UPM-Kymmene Oyj | 51 |
1 |
| DDP Specialty Electronic Materials US, LLC | 848 |
1 |
| Nutrition & Biosciences USA 1, LLC | 217 |
1 |
| Other owners | 0 |