- 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 19/62 - Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Patent holdings for IPC class D21H 19/62
Total number of patents in this class: 110
10-year publication summary
|
11
|
10
|
7
|
6
|
12
|
11
|
9
|
9
|
10
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WestRock MWV, LLC | 331 |
8 |
| Hewlett-Packard Development Company, L.P. | 25174 |
6 |
| Stora Enso Oyj | 1660 |
6 |
| Flooring Technologies Ltd. | 172 |
4 |
| Lamberti SpA | 258 |
4 |
| Oji Holdings Corporation | 801 |
4 |
| Nutrition & Biosciences USA 4, Inc. | 243 |
4 |
| E. I. du Pont de Nemours and Company | 3473 |
2 |
| Mitsui Chemicals, Inc. | 3262 |
2 |
| Axalta Coating Systems IP Co., LLC | 478 |
2 |
| Cooperatie Avebe U.A. | 79 |
2 |
| GRUPPO CORDENONS S.p.A. | 46 |
2 |
| Hankuk Paper Mfg. Co., Ltd | 11 |
2 |
| Evonik Operations GmbH | 4395 |
2 |
| Appvion, LLC | 66 |
2 |
| Qwarzo S.p.A | 22 |
2 |
| BASF SE | 21320 |
1 |
| Kaneka Corporation | 4745 |
1 |
| Akzo Nobel Coatings International B.V. | 2027 |
1 |
| Aquaspersions Limited | 23 |
1 |
| Other owners | 52 |