- 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 17/28 - Starch
Patent holdings for IPC class D21H 17/28
Total number of patents in this class: 559
10-year publication summary
|
39
|
39
|
46
|
45
|
32
|
37
|
47
|
36
|
35
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1258 |
62 |
| Stora Enso Oyj | 1653 |
28 |
| Ecolab USA Inc. | 5796 |
16 |
| First Quality Tissue, LLC | 164 |
14 |
| Solenis Technologies, L.P. | 304 |
14 |
| Seiko Epson Corporation | 20256 |
12 |
| Philip Morris USA Inc. | 654 |
11 |
| Roquette Freres | 1051 |
11 |
| Essity Operations France | 39 |
10 |
| Billerud AB | 162 |
9 |
| Fiberlean Technologies Limited | 98 |
9 |
| Mondi AG | 211 |
9 |
| Footprint International, LLC | 87 |
9 |
| BASF SE | 21303 |
8 |
| Domtar Paper Company, LLC | 124 |
8 |
| Omya International AG | 777 |
8 |
| delfortgroup AG | 156 |
7 |
| University of Maine System Board of Trustees | 281 |
7 |
| The Procter & Gamble Company | 21855 |
6 |
| Billerudkorsnas AB | 88 |
6 |
| Other owners | 295 |