- 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 13/20 - Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Patent holdings for IPC class D21H 13/20
Total number of patents in this class: 38
10-year publication summary
|
3
|
6
|
0
|
1
|
2
|
4
|
2
|
1
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7145 |
7 |
| E. I. du Pont de Nemours and Company | 3464 |
4 |
| The Procter & Gamble Company | 21880 |
3 |
| Hanwha Azdel, Inc. | 111 |
3 |
| Nutrition & Biosciences USA 4, Inc. | 244 |
3 |
| Lenzing Aktiengesellschaft | 499 |
2 |
| DuPont Safety & Construction, Inc. | 679 |
2 |
| Murata Manufacturing Co., Ltd. | 25893 |
1 |
| Kemira Oyj | 1262 |
1 |
| Kuraray Co., Ltd. | 3600 |
1 |
| Neenah Paper, Inc. | 50 |
1 |
| Nippon Paper Industries Co., Ltd. | 854 |
1 |
| Northeastern University | 1303 |
1 |
| SABIC Global Technologies B.V. | 4619 |
1 |
| Södra Skogsägarna ekonomisk förening | 81 |
1 |
| Teijin Aramid B.V. | 166 |
1 |
| Tomoegawa Co., Ltd. | 227 |
1 |
| Toyobo Co., Ltd. | 2541 |
1 |
| GPCP IP Holdings LLC | 1529 |
1 |
| Hunan University of Science and Technology | 70 |
1 |
| Other owners | 1 |