- All sections
- C - Chemistrymetallurgy
- C08B - Polysaccharidesderivatives thereof
- C08B 15/04 - Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
Patent holdings for IPC class C08B 15/04
Total number of patents in this class: 327
10-year publication summary
|
20
|
33
|
32
|
34
|
20
|
21
|
16
|
13
|
19
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 854 |
60 |
| UPM-Kymmene Corporation | 1005 |
25 |
| Toagosei Co., Ltd. | 1033 |
24 |
| Kao Corporation | 5105 |
19 |
| The University of Tokyo | 4395 |
16 |
| Oji Holdings Corporation | 810 |
15 |
| GP Cellulose GmbH | 86 |
10 |
| Toppan Printing Co., Ltd. | 2078 |
10 |
| GranBio Intellectual Property Holdings, LLC | 125 |
6 |
| Toyo Seikan Group Holdings, Ltd. | 857 |
5 |
| Centre National de La Recherche Scientifique | 11122 |
4 |
| Dai-Ichi Kogyo Seiyaku Co., Ltd. | 222 |
4 |
| The Research Foundation for The State University of New York | 1774 |
4 |
| Stora Enso Oyj | 1662 |
4 |
| The University of North Carolina at Chapel Hill | 2125 |
4 |
| Anomera Inc. | 40 |
4 |
| DKS Co. Ltd. | 256 |
4 |
| Institut Polytechnique de Grenoble | 431 |
3 |
| Sofradim Production | 290 |
3 |
| Symatese | 14 |
3 |
| Other owners | 100 |