- 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 19/64 - Inorganic compounds
Patent holdings for IPC class D21H 19/64
Total number of patents in this class: 87
10-year publication summary
|
10
|
12
|
9
|
11
|
11
|
6
|
7
|
7
|
4
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hewlett-Packard Development Company, L.P. | 25887 |
10 |
| Kemira Oyj | 1206 |
5 |
| BASF SE | 20912 |
4 |
| Coatex S.A.S. | 227 |
3 |
| J.M. Huber Corporation | 125 |
3 |
| Packaging and Crating Technologies, LLC | 11 |
3 |
| Stora Enso Oyj | 1637 |
3 |
| Eastman Kodak Company | 2903 |
2 |
| Billerud AB | 125 |
2 |
| Hankuk Paper Mfg. Co., Ltd | 10 |
2 |
| KT & G Corporation | 2624 |
2 |
| Mitsubishi Paper Mills Limited | 232 |
2 |
| Oji Holdings Corporation | 718 |
2 |
| WestRock MWV, LLC | 340 |
2 |
| Sappi North America, Inc. | 96 |
2 |
| Lignum Technologies AG | 64 |
2 |
| Agriboard Green Building Systems, LLC | 8 |
2 |
| 3m Innovative Properties Company | 17852 |
1 |
| Philip Morris Products S.A. | 7630 |
1 |
| Rohm and Haas Company | 2908 |
1 |
| Other owners | 33 |