- 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 19/46 - Non-macromolecular organic compounds
Patent holdings for IPC class D21H 19/46
Total number of patents in this class: 71
10-year publication summary
|
4
|
2
|
8
|
3
|
5
|
9
|
8
|
10
|
7
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1660 |
7 |
| Kemira Oyj | 1262 |
6 |
| Hewlett-Packard Development Company, L.P. | 25148 |
2 |
| Chemstone, Inc. | 26 |
2 |
| KT & G Corporation | 3166 |
2 |
| Nippon Paper Industries Co., Ltd. | 854 |
2 |
| Solenis Technologies Cayman, L.P. | 321 |
2 |
| Solenis Technologies, L.P. | 304 |
2 |
| Xeikon Manufacturing N.V. | 68 |
2 |
| CHT Germany GmbH | 95 |
2 |
| ACE Packaging NV | 9 |
2 |
| Koehler Innovation & Technology GmbH | 56 |
2 |
| Agriboard Green Building Systems, LLC | 8 |
2 |
| LG Chem, Ltd. | 17967 |
1 |
| Xerox Corporation | 4382 |
1 |
| Ricoh Company, Ltd. | 13355 |
1 |
| Northwestern University | 3567 |
1 |
| Agriboard International, LLC | 2 |
1 |
| Cascades Sonoco Inc. | 26 |
1 |
| China Tobacco Yunnan Industrial Co., Ltd. | 279 |
1 |
| Other owners | 29 |