- 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: 208
10-year publication summary
|
13
|
21
|
10
|
16
|
15
|
15
|
2
|
12
|
5
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1658 |
21 |
| GP Cellulose GmbH | 88 |
17 |
| International Paper Company | 785 |
17 |
| Domtar Paper Company, LLC | 122 |
11 |
| UPM-Kymmene Corporation | 943 |
11 |
| Nippon Paper Industries Co., Ltd. | 834 |
7 |
| Kimberly-clark Worldwide, Inc. | 5451 |
5 |
| Kemira Oyj | 1216 |
5 |
| Cellutech AB | 22 |
4 |
| Eastman Chemical Company | 2207 |
4 |
| Oji Holdings Corporation | 731 |
4 |
| GranBio Intellectual Property Holdings, LLC | 121 |
4 |
| The Procter & Gamble Company | 22006 |
3 |
| Kao Corporation | 4984 |
3 |
| Billerudkorsnas AB | 88 |
3 |
| FPInnovations | 240 |
3 |
| Toppan Printing Co., Ltd. | 2128 |
3 |
| Mercer International Inc. | 30 |
3 |
| Halliburton Energy Services, Inc. | 20964 |
2 |
| Board of Regents, The University of Texas System | 5869 |
2 |
| Other owners | 76 |