- 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 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: 197
10-year publication summary
|
14
|
14
|
25
|
13
|
17
|
18
|
17
|
2
|
11
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stora Enso Oyj | 1504 |
18 |
| GP Cellulose GmbH | 98 |
17 |
| International Paper Company | 857 |
17 |
| Domtar Paper Company, LLC | 119 |
12 |
| UPM-Kymmene Corporation | 868 |
11 |
| Nippon Paper Industries Co., Ltd. | 782 |
7 |
| Kimberly-clark Worldwide, Inc. | 5854 |
5 |
| Billerudkorsnas AB | 91 |
4 |
| Cellutech AB | 24 |
4 |
| Eastman Chemical Company | 2239 |
4 |
| Kao Corporation | 4843 |
3 |
| FPInnovations | 259 |
3 |
| Kemira Oyj | 1167 |
3 |
| Oji Holdings Corporation | 660 |
3 |
| Toppan Printing Co., Ltd. | 2212 |
3 |
| Mercer International Inc. | 30 |
3 |
| The Procter & Gamble Company | 22178 |
2 |
| Halliburton Energy Services, Inc. | 20165 |
2 |
| Board of Regents, The University of Texas System | 5370 |
2 |
| Asahi Kasei Fibers Corporation | 112 |
2 |
| Other owners | 72 |