- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 13/04 - Cellulose ethers
Patent holdings for IPC class D21H 13/04
Total number of patents in this class: 25
10-year publication summary
|
3
|
3
|
3
|
6
|
4
|
1
|
1
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Paper Company | 785 |
7 |
| Nippon Paper Industries Co., Ltd. | 834 |
4 |
| Nippon Paper Papylia Co., Ltd. | 38 |
3 |
| Avery Dennison Retail Information Services LLC | 1166 |
2 |
| Korea Institute of Industrial Technology | 1015 |
2 |
| LG Chem, Ltd. | 17676 |
1 |
| E. I. du Pont de Nemours and Company | 3988 |
1 |
| Kao Corporation | 4984 |
1 |
| KT & G Corporation | 2665 |
1 |
| LG Household & Health Care Ltd. | 1199 |
1 |
| Stora Enso Oyj | 1658 |
1 |
| Bracell Bahia Specialty Cellulose SA | 5 |
1 |
| Other owners | 0 |