- 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 11/16 - Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
Patent holdings for IPC class D21H 11/16
Total number of patents in this class: 206
10-year publication summary
|
14
|
25
|
13
|
17
|
18
|
18
|
2
|
13
|
5
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1634 |
21 |
| GP Cellulose GmbH | 88 |
17 |
| International Paper Company | 791 |
16 |
| Domtar Paper Company, LLC | 121 |
11 |
| UPM-Kymmene Corporation | 937 |
11 |
| Nippon Paper Industries Co., Ltd. | 829 |
7 |
| Kimberly-clark Worldwide, Inc. | 5504 |
5 |
| Kemira Oyj | 1207 |
5 |
| Cellutech AB | 22 |
4 |
| Eastman Chemical Company | 2216 |
4 |
| Oji Holdings Corporation | 717 |
4 |
| GranBio Intellectual Property Holdings, LLC | 119 |
4 |
| The Procter & Gamble Company | 22037 |
3 |
| Kao Corporation | 4959 |
3 |
| Billerudkorsnas AB | 88 |
3 |
| FPInnovations | 245 |
3 |
| Toppan Printing Co., Ltd. | 2135 |
3 |
| Mercer International Inc. | 30 |
3 |
| Halliburton Energy Services, Inc. | 20862 |
2 |
| Board of Regents, The University of Texas System | 5772 |
2 |
| Other owners | 75 |