- All sections
- D - Textiles; paper
- D21F - Paper-making machines; methods of producing paper thereon
- D21F 7/12 - Drying
Patent holdings for IPC class D21F 7/12
Total number of patents in this class: 116
10-year publication summary
|
13
|
16
|
10
|
11
|
10
|
15
|
5
|
5
|
5
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GPCP IP Holdings LLC | 1686 |
19 |
| Voith Patent GmbH | 2734 |
15 |
| Albany International Corp. | 282 |
14 |
| Kimberly-clark Worldwide, Inc. | 5520 |
11 |
| First Quality Tissue, LLC | 150 |
5 |
| Valmet AB | 495 |
5 |
| The Procter & Gamble Company | 22151 |
4 |
| AstenJohnson, Inc. | 134 |
4 |
| Kadant Inc. | 45 |
4 |
| MainTech Co., Ltd. | 62 |
4 |
| Valmet Technologies Oy | 290 |
4 |
| S.A. Giuseppe Cristini S.p.A. | 22 |
3 |
| Andritz AG | 227 |
2 |
| Ichikawa Co., Ltd. | 108 |
2 |
| Metso Paper, Inc. | 478 |
2 |
| Structured I, LLC | 57 |
2 |
| First Quality Tissue SE, LLC | 4 |
2 |
| Georgia Tech Research Corporation | 2607 |
1 |
| A. Celli Paper S.p.A. | 34 |
1 |
| Andritz Perfojet SAS | 20 |
1 |
| Other owners | 11 |