- 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 21/32 - Bleaching agents
Patent holdings for IPC class D21H 21/32
Total number of patents in this class: 71
10-year publication summary
|
9
|
5
|
5
|
3
|
4
|
4
|
2
|
2
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ecolab USA Inc. | 5732 |
7 |
| GP Cellulose GmbH | 87 |
6 |
| Nalco Company | 550 |
6 |
| Kemira Oyj | 1239 |
5 |
| The Coca-Cola Company | 2458 |
4 |
| Archroma IP GmbH | 457 |
3 |
| Clariant Finance (BVI) Limited | 373 |
3 |
| Georgia-Pacific Consumer Products LP | 103 |
3 |
| WestRock MWV, LLC | 332 |
3 |
| GranBio Intellectual Property Holdings, LLC | 124 |
3 |
| GCF US Holdings LLC | 141 |
3 |
| International Paper Company | 608 |
2 |
| UPM-Kymmene Corporation | 977 |
2 |
| GPCP IP Holdings LLC | 1545 |
2 |
| Archroma IP GmbH | 4 |
2 |
| Andritz Oy | 288 |
1 |
| Billerudkorsnas AB | 88 |
1 |
| CCL Label, Inc. | 504 |
1 |
| Centre Technique de l'industrie des Papiers, Cartons et Celluloses | 18 |
1 |
| FPInnovations | 226 |
1 |
| Other owners | 12 |