- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 7/12 - Drying
Patent holdings for IPC class D21F 7/12
Total number of patents in this class: 114
10-year publication summary
|
16
|
10
|
11
|
10
|
15
|
5
|
5
|
5
|
5
|
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 | 1530 |
19 |
| Voith Patent GmbH | 2747 |
14 |
| Kimberly-clark Worldwide, Inc. | 5305 |
11 |
| Albany International Corp. | 231 |
10 |
| First Quality Tissue, LLC | 164 |
7 |
| Valmet AB | 554 |
6 |
| The Procter & Gamble Company | 21849 |
4 |
| AstenJohnson, Inc. | 121 |
4 |
| Kadant Inc. | 44 |
4 |
| MainTech Co., Ltd. | 66 |
4 |
| Valmet Technologies Oy | 288 |
4 |
| S.A. Giuseppe Cristini S.p.A. | 26 |
3 |
| Andritz AG | 244 |
2 |
| Ichikawa Co., Ltd. | 87 |
2 |
| Metso Paper, Inc. | 338 |
2 |
| Structured I, LLC | 62 |
2 |
| First Quality Tissue SE, LLC | 4 |
2 |
| Georgia Tech Research Corporation | 2950 |
1 |
| A. Celli Paper S.p.A. | 20 |
1 |
| Andritz Perfojet SAS | 12 |
1 |
| Other owners | 11 |