- All sections
- D - Textilespaper
- D21B - Fibrous raw materials or their mechanical treatment
- D21B 1/02 - Pretreatment of the raw materials by physical or chemical means
Patent holdings for IPC class D21B 1/02
Total number of patents in this class: 288
10-year publication summary
|
29
|
18
|
26
|
24
|
24
|
22
|
15
|
30
|
29
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19425 |
12 |
| Xyleco, Inc. | 195 |
12 |
| Billerud AB | 126 |
8 |
| UPM-Kymmene Corporation | 936 |
8 |
| Valmet AB | 511 |
7 |
| The Procter & Gamble Company | 22045 |
6 |
| Andritz AG | 233 |
5 |
| Andritz Inc. | 332 |
5 |
| Metsa Board Oyj | 53 |
5 |
| Stora Enso Oyj | 1648 |
5 |
| Versalis S.P.A. | 542 |
5 |
| Juno LLC | 19 |
5 |
| Beta Renewables, S.p.A. | 25 |
4 |
| Board of Trustees of Michigan State University | 1187 |
4 |
| Bouldin Corporation | 24 |
4 |
| Entsorgafin S.p.A. | 24 |
4 |
| Mascoma Canada Inc. | 13 |
4 |
| GranBio Intellectual Property Holdings, LLC | 121 |
4 |
| IFG Technologies, LLC | 8 |
4 |
| Yi Chun Green Technology Co., Ltd. | 6 |
4 |
| Other owners | 173 |