- All sections
- C - Chemistry; metallurgy
- C08B - Polysaccharides; derivatives 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: 307
10-year publication summary
|
24
|
19
|
20
|
33
|
32
|
34
|
20
|
21
|
13
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 782 |
55 |
| UPM-Kymmene Corporation | 868 |
26 |
| Toagosei Co., Ltd. | 894 |
19 |
| Kao Corporation | 4843 |
17 |
| Oji Holdings Corporation | 660 |
13 |
| The University of Tokyo | 3903 |
13 |
| GP Cellulose GmbH | 98 |
12 |
| Toppan Printing Co., Ltd. | 2212 |
10 |
| Eastman Chemical Company | 2239 |
7 |
| Centre National de La Recherche Scientifique | 9632 |
5 |
| Stora Enso Oyj | 1504 |
5 |
| GranBio Intellectual Property Holdings, LLC | 105 |
5 |
| Dai-Ichi Kogyo Seiyaku Co., Ltd. | 235 |
4 |
| Toyo Seikan Group Holdings, Ltd. | 765 |
4 |
| The University of North Carolina at Chapel Hill | 1928 |
4 |
| Anomera Inc. | 45 |
4 |
| Gunze Limited | 361 |
3 |
| The Research Foundation for The State University of New York | 1468 |
3 |
| Sofradim Production | 305 |
3 |
| Symatese | 14 |
3 |
| Other owners | 92 |