- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment of finished paper not covered by class or subclass ; paper not otherwise provided for
- D21H 19/34 - Coatings without pigments applied in a form other than the aqueous solution defined in group comprising cellulose or derivatives thereof
Patent holdings for IPC class D21H 19/34
Total number of patents in this class: 239
10-year publication summary
|
9
|
13
|
18
|
16
|
22
|
25
|
33
|
36
|
29
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1504 |
46 |
| Kemira Oyj | 1167 |
12 |
| Nippon Paper Industries Co., Ltd. | 782 |
11 |
| Fiberlean Technologies Limited | 116 |
8 |
| Daio Paper Corporation | 1407 |
6 |
| University of Maine System Board of Trustees | 261 |
6 |
| Domtar Paper Company, LLC | 119 |
5 |
| KT & G Corporation | 1876 |
5 |
| Toppan Printing Co., Ltd. | 2212 |
5 |
| PAPACKS SALES GmbH | 28 |
5 |
| GranBio Intellectual Property Holdings, LLC | 105 |
4 |
| Mativ Holdings, Inc. | 106 |
4 |
| BASF SE | 19740 |
3 |
| Kuraray Co., Ltd. | 3392 |
3 |
| Neenah Gessner GmbH | 50 |
3 |
| Tetra Laval Holdings & Finance S.A. | 2007 |
3 |
| United States Gypsum Company | 1019 |
3 |
| UPM-Kymmene Corporation | 868 |
3 |
| Ch-polymers Oy | 12 |
3 |
| Société des Produits Nestlé S.A. | 9672 |
2 |
| Other owners | 99 |