- 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 13/02 - Synthetic cellulose fibres
Patent holdings for IPC class D21H 13/02
Total number of patents in this class: 73
10-year publication summary
|
3
|
9
|
7
|
11
|
11
|
6
|
2
|
4
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lenzing Aktiengesellschaft | 522 |
7 |
| Mercer International Inc. | 30 |
5 |
| The Procter & Gamble Company | 22043 |
4 |
| International Paper Company | 788 |
4 |
| GPCP IP Holdings LLC | 1637 |
4 |
| Kimberly-clark Worldwide, Inc. | 5502 |
3 |
| First Quality Tissue, LLC | 156 |
3 |
| Paptic Oy | 29 |
3 |
| FUJIFILM Corporation | 29437 |
2 |
| Kalle GmbH | 107 |
2 |
| Mitsubishi Paper Mills Limited | 232 |
2 |
| Rockline Industries, Inc. | 80 |
2 |
| Zhejiang University of Science and Technology | 36 |
2 |
| Hewlett-Packard Development Company, L.P. | 25864 |
1 |
| Asahi Kasei Kabushiki Kaisha | 2677 |
1 |
| Billerudkorsnas AB | 87 |
1 |
| Buckman Laboratories International, Inc. | 237 |
1 |
| CJ Cheiljedang Corporation | 3426 |
1 |
| ConvaTec Technologies Inc. | 295 |
1 |
| Eastman Chemical Company | 2216 |
1 |
| Other owners | 23 |