- 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 23/02 - Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
Patent holdings for IPC class D21H 23/02
Total number of patents in this class: 16
10-year publication summary
|
0
|
0
|
2
|
2
|
1
|
0
|
0
|
0
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1660 |
5 |
| BASF SE | 21053 |
1 |
| Kimberly-clark Worldwide, Inc. | 5423 |
1 |
| Solenis Technologies Cayman, L.P. | 310 |
1 |
| SOLENIS TECHNOLOGIES, L.P., Solenis International, L.P., a Delaware limited partnership, DBA Solenis Technologies, L.P. | 194 |
1 |
| Voith Patent GmbH | 2776 |
1 |
| Wetend Technologies Oy | 27 |
1 |
| BASF (China) Co., Ltd. | 854 |
1 |
| VKR Holding A/S | 564 |
1 |
| Essity Operations France | 45 |
1 |
| Glatfelter Corporation | 66 |
1 |
| Solenis Technologies Cayman, L.P. | 34 |
1 |
| Other owners | 0 |