- 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 23/06 - Controlling the addition
Patent holdings for IPC class D21H 23/06
Total number of patents in this class: 23
10-year publication summary
|
1
|
3
|
0
|
3
|
2
|
0
|
0
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GPCP IP Holdings LLC | 1589 |
4 |
| Ecolab USA Inc. | 5659 |
3 |
| Seiko Epson Corporation | 19806 |
2 |
| Philadelphia Mixing Solutions, Ltd. | 30 |
2 |
| SCA Forest Products AB | 82 |
2 |
| Akzo Nobel Chemicals International B.V. | 428 |
1 |
| BTG Pulp & Paper Sensors AB | 7 |
1 |
| ESKA B.V. | 25 |
1 |
| Kemira Chemicals, Inc. | 78 |
1 |
| Kurita Water Industries Ltd. | 1246 |
1 |
| Linde Aktiengesellschaft | 1460 |
1 |
| Nalco Company | 559 |
1 |
| Voith Patent GmbH | 2764 |
1 |
| Voith Paper Automation GmbH & Co. KG | 1 |
1 |
| SNF Group | 382 |
1 |
| Other owners | 0 |