- All sections
- C - Chemistrymetallurgy
- C08B - Polysaccharidesderivatives thereof
- C08B 3/20 - Esterification with maintenance of the fibrous structure of the cellulose
Patent holdings for IPC class C08B 3/20
Total number of patents in this class: 72
10-year publication summary
|
4
|
6
|
7
|
4
|
3
|
6
|
4
|
10
|
5
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daio Paper Corporation | 1382 |
7 |
| Stora Enso Oyj | 1634 |
6 |
| UPM-Kymmene Corporation | 937 |
6 |
| Tricoya Technologies Ltd | 40 |
4 |
| Kyoto University | 2802 |
3 |
| Metsäliitto Osuuskunta | 48 |
3 |
| Seiko PMC Corporation | 92 |
3 |
| Tikkurila Oyj | 125 |
3 |
| NEC Corporation | 35521 |
2 |
| Asahi Kasei Kabushiki Kaisha | 2654 |
2 |
| Chemstone, Inc. | 24 |
2 |
| Futamura Kagaku Kabushiki Kaisha | 81 |
2 |
| Kri, Inc. | 32 |
2 |
| University of Maryland, College Park | 1013 |
2 |
| Osaka Research Institute of Industrial Science and Technology | 77 |
2 |
| Compagnie Generale des Etablissements Michelin | 4743 |
2 |
| Cerdia International GmbH | 40 |
2 |
| Olympus Corporation | 13182 |
1 |
| Empire Technology Development LLC | 1620 |
1 |
| Mitsubishi Chemical Corporation | 4493 |
1 |
| Other owners | 16 |