- All sections
- C - Chemistrymetallurgy
- C08B - Polysaccharidesderivatives thereof
- C08B 5/00 - Preparation of cellulose esters of inorganic acids
Patent holdings for IPC class C08B 5/00
Total number of patents in this class: 114
10-year publication summary
|
5
|
6
|
17
|
17
|
17
|
15
|
4
|
2
|
1
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oji Holdings Corporation | 718 |
49 |
| Nippon Paper Industries Co., Ltd. | 830 |
6 |
| Daio Paper Corporation | 1382 |
5 |
| Stora Enso Oyj | 1637 |
3 |
| Torcitura Padana S.p.A. | 5 |
3 |
| Toyo Seikan Group Holdings, Ltd. | 833 |
3 |
| Zanolo S.p.A. | 9 |
3 |
| ARC Medical Devices, Inc. | 15 |
2 |
| Katayama Chemical, Inc. | 35 |
2 |
| Lion Corporation | 742 |
2 |
| The University of Tokyo | 4170 |
2 |
| Betulium Oy | 17 |
2 |
| DKS Co. Ltd. | 187 |
2 |
| Nouryon Chemicals International B.V. | 607 |
2 |
| Dow Global Technologies Inc. | 837 |
1 |
| Mitsubishi Rayon Co., Ltd. | 913 |
1 |
| Mitsubishi Chemical Corporation | 4496 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4943 |
1 |
| Agency for Science, Technology and Research | 3610 |
1 |
| Academia Sinica | 937 |
1 |
| Other owners | 22 |