- 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 23/24 - Addition to the formed paper during paper manufacture
Patent holdings for IPC class D21H 23/24
Total number of patents in this class: 99
10-year publication summary
|
6
|
10
|
6
|
5
|
5
|
6
|
3
|
8
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ecolab USA Inc. | 5190 |
8 |
| Nalco Company | 620 |
6 |
| Voith Patent GmbH | 2727 |
6 |
| Kimberly-clark Worldwide, Inc. | 5854 |
5 |
| Kemira Oyj | 1167 |
4 |
| Seiko Epson Corporation | 18724 |
3 |
| Metsa Board Oyj | 49 |
3 |
| Stora Enso Oyj | 1504 |
3 |
| Global Holdings II, Inc. | 159 |
3 |
| Hewlett-Packard Development Company, L.P. | 28538 |
2 |
| The Regents of the University of Michigan | 4409 |
2 |
| Buckman Laboratories International, Inc. | 244 |
2 |
| Georgia-Pacific Consumer Products LP | 118 |
2 |
| Metso Paper, Inc. | 528 |
2 |
| Runtech Systems Oy | 25 |
2 |
| Solenis Technologies, L.P. | 306 |
2 |
| Tagit - Eas LTD | 2 |
2 |
| The Procter & Gamble Company | 22178 |
1 |
| BASF SE | 19740 |
1 |
| Toray Industries, Inc. | 6652 |
1 |
| Other owners | 39 |