- 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: 546
10-year publication summary
|
27
|
35
|
32
|
37
|
39
|
27
|
31
|
38
|
34
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1228 |
55 |
| Stora Enso Oyj | 1665 |
32 |
| Ecolab USA Inc. | 5607 |
16 |
| First Quality Tissue, LLC | 156 |
13 |
| Solenis Technologies, L.P. | 313 |
13 |
| Philip Morris USA Inc. | 682 |
11 |
| Seiko Epson Corporation | 19708 |
11 |
| Roquette Freres | 1029 |
11 |
| Essity Operations France | 42 |
10 |
| Billerud AB | 143 |
9 |
| Fiberlean Technologies Limited | 111 |
9 |
| BASF SE | 21137 |
8 |
| Domtar Paper Company, LLC | 121 |
8 |
| Mondi AG | 186 |
8 |
| Omya International AG | 770 |
8 |
| University of Maine System Board of Trustees | 288 |
8 |
| Corn Products Development, Inc. | 679 |
7 |
| delfortgroup AG | 151 |
7 |
| Footprint International, LLC | 83 |
7 |
| The Procter & Gamble Company | 22025 |
6 |
| Other owners | 289 |