- 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 17/15 - Polycarboxylic acids, e.g. maleic acid
Patent holdings for IPC class D21H 17/15
Total number of patents in this class: 101
10-year publication summary
|
5
|
7
|
8
|
6
|
9
|
8
|
6
|
9
|
8
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1258 |
13 |
| Ecolab USA Inc. | 5792 |
7 |
| Fiberdom Oy | 21 |
7 |
| The Procter & Gamble Company | 21861 |
5 |
| Stora Enso Oyj | 1648 |
5 |
| Nalco Company | 536 |
4 |
| KT & G Corporation | 3121 |
3 |
| Metgen Oy | 43 |
3 |
| OrganoClick AB | 70 |
3 |
| SCA Forest Products AB | 82 |
3 |
| Kombucha Biomaterials LLC | 4 |
3 |
| Cellucomp Limited | 38 |
2 |
| Eastman Chemical Company | 2081 |
2 |
| Glatfelter Gernsbach GmbH | 46 |
2 |
| Pratt Corrugated Holdings, Inc. | 320 |
2 |
| Roquette Freres | 1050 |
2 |
| Teknologisk Institut | 94 |
2 |
| Wm. Wrigley Jr. Company | 1136 |
2 |
| World Centric | 59 |
2 |
| Evertree | 84 |
2 |
| Other owners | 27 |