- All sections
- D - Textilespaper
- D21G - Calendersaccessories for paper-making machines
- D21G 3/04 - Doctors for drying cylinders
Patent holdings for IPC class D21G 3/04
Total number of patents in this class: 35
10-year publication summary
|
4
|
4
|
6
|
3
|
0
|
0
|
4
|
3
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2736 |
5 |
| Ecolab USA Inc. | 5341 |
4 |
| Kadant Inc. | 45 |
4 |
| Oradoc S.r.l. | 4 |
4 |
| BTG Eclepens S.A. | 26 |
2 |
| Buschman Corporation | 4 |
2 |
| Daio Paper Corporation | 1390 |
2 |
| Metso Paper, Inc. | 475 |
2 |
| Valmet Technologies, Inc. | 160 |
2 |
| GPCP IP Holdings LLC | 1684 |
2 |
| The Procter & Gamble Company | 22146 |
1 |
| Irving Consumer Products Limited | 167 |
1 |
| Voestalpine Precision Strip AB | 21 |
1 |
| CS Produktion AB | 4 |
1 |
| Ganzhou en Chuang Technology Company Limited | 2 |
1 |
| Horst Sprenger GmbH Spezialwerkzeuge | 2 |
1 |
| Other owners | 0 |