- 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 11/14 - Secondary fibres
Patent holdings for IPC class D21H 11/14
Total number of patents in this class: 394
10-year publication summary
|
20
|
34
|
21
|
51
|
34
|
33
|
59
|
47
|
32
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1231 |
45 |
| GPCP IP Holdings LLC | 1583 |
22 |
| Seiko Epson Corporation | 19805 |
20 |
| Stora Enso Oyj | 1648 |
19 |
| Footprint International, LLC | 82 |
17 |
| Fiberlean Technologies Limited | 105 |
11 |
| Eastman Chemical Company | 2112 |
10 |
| Kimberly-clark Worldwide, Inc. | 5301 |
8 |
| UPM-Kymmene Corporation | 966 |
8 |
| Uni-Charm Corporation | 594 |
6 |
| Billerud AB | 144 |
6 |
| Ecolab USA Inc. | 5663 |
6 |
| Enzymatic Deinking Technologies, LLC | 42 |
6 |
| Valmet AB | 531 |
6 |
| Soane Materials LLC | 24 |
6 |
| Nippon Paper Industries Co., Ltd. | 833 |
5 |
| Solenis Technologies, L.P. | 330 |
5 |
| First Quality Tissue, LLC | 157 |
4 |
| Lenzing Aktiengesellschaft | 514 |
4 |
| North Carolina State University | 1585 |
4 |
| Other owners | 176 |