- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment of finished paper not covered by class or subclass ; paper not otherwise provided for
- D21H 21/50 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties characterised by form
Patent holdings for IPC class D21H 21/50
Total number of patents in this class: 39
10-year publication summary
|
1
|
1
|
4
|
7
|
1
|
6
|
3
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Procter & Gamble Company | 22146 |
7 |
| Ecolab USA Inc. | 5341 |
4 |
| delfortgroup AG | 149 |
2 |
| Fiberlean Technologies Limited | 119 |
2 |
| Pactiv LLC | 168 |
2 |
| Stora Enso Oyj | 1605 |
2 |
| University of Leeds | 286 |
2 |
| Graphic Packaging International, LLC | 1434 |
2 |
| LG Chem, Ltd. | 17639 |
1 |
| Philip Morris Products S.A. | 7310 |
1 |
| Seiko Epson Corporation | 18989 |
1 |
| Akzo Nobel Chemicals International B.V. | 480 |
1 |
| Billerud AB | 101 |
1 |
| Billerudkorsnas AB | 91 |
1 |
| Elastopoli Oy | 4 |
1 |
| Imerys USA, Inc. | 142 |
1 |
| Innventia AB | 35 |
1 |
| K-Plasheet Corporation | 6 |
1 |
| KT & G Corporation | 2338 |
1 |
| SCA Hygiene Products AB | 685 |
1 |
| Other owners | 4 |