- 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
|
9
|
7
|
11
|
11
|
6
|
2
|
4
|
2
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lenzing Aktiengesellschaft | 510 |
7 |
| The Procter & Gamble Company | 21905 |
5 |
| Mercer International Inc. | 30 |
5 |
| Kimberly-clark Worldwide, Inc. | 5281 |
3 |
| First Quality Tissue, LLC | 159 |
3 |
| Paptic Oy | 31 |
3 |
| GPCP IP Holdings LLC | 1545 |
3 |
| GCF US Holdings LLC | 144 |
3 |
| FUJIFILM Corporation | 30244 |
2 |
| Kalle GmbH | 104 |
2 |
| Mitsubishi Paper Mills Limited | 228 |
2 |
| Rockline Industries, Inc. | 83 |
2 |
| Zhejiang University of Science and Technology | 45 |
2 |
| Fybervek Holdings LLC | 4 |
2 |
| Hewlett-Packard Development Company, L.P. | 25339 |
1 |
| Asahi Kasei Kabushiki Kaisha | 2779 |
1 |
| Billerudkorsnas AB | 88 |
1 |
| Buckman Laboratories International, Inc. | 239 |
1 |
| CJ Cheiljedang Corporation | 3565 |
1 |
| ConvaTec Technologies Inc. | 258 |
1 |
| Other owners | 23 |