- 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 17/56 - PolyaminesPolyiminesPolyester-imides
Patent holdings for IPC class D21H 17/56
Total number of patents in this class: 181
10-year publication summary
|
15
|
14
|
18
|
9
|
10
|
3
|
10
|
9
|
6
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1206 |
35 |
| Ecolab USA Inc. | 5475 |
22 |
| Solenis Technologies, L.P. | 334 |
22 |
| Footprint International, LLC | 77 |
9 |
| BASF SE | 20912 |
8 |
| Solenis Technologies Cayman, L.P. | 299 |
4 |
| AGC Chemicals Americas, Inc. | 43 |
3 |
| Billerud AB | 125 |
3 |
| Buckman Laboratories International, Inc. | 235 |
3 |
| The Chemours Company Fc, LLC | 1221 |
3 |
| Depco-trh Pty Ltd | 13 |
3 |
| Metsa Board Oyj | 53 |
3 |
| Stora Enso Oyj | 1637 |
3 |
| Hewlett-Packard Development Company, L.P. | 25887 |
2 |
| Georgia-Pacific Chemicals LLC | 135 |
2 |
| Akzo Nobel N.V. | 179 |
2 |
| First Quality Tissue, LLC | 156 |
2 |
| Hercules Incorporated | 139 |
2 |
| Kemira Chemicals, Inc. | 79 |
2 |
| Nalco Company | 563 |
2 |
| Other owners | 46 |