- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 7/08 - Felts
Patent holdings for IPC class D21F 7/08
Total number of patents in this class: 520
10-year publication summary
|
26
|
23
|
36
|
27
|
36
|
23
|
30
|
35
|
20
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2741 |
112 |
| Albany International Corp. | 231 |
89 |
| Ichikawa Co., Ltd. | 87 |
44 |
| The Procter & Gamble Company | 21852 |
34 |
| Nippon Filcon Co., Ltd. | 114 |
29 |
| Kimberly-clark Worldwide, Inc. | 5261 |
24 |
| AstenJohnson, Inc. | 121 |
23 |
| GPCP IP Holdings LLC | 1531 |
17 |
| Huyck Licensco, Inc., | 46 |
16 |
| Structured I, LLC | 62 |
16 |
| Valmet Technologies Oy | 288 |
14 |
| Astenjohnson International, Inc. | 19 |
11 |
| First Quality Tissue, LLC | 166 |
10 |
| Weavexx, LLC | 18 |
7 |
| MainTech Co., Ltd. | 66 |
5 |
| Feltri Marone S.p.A. | 14 |
4 |
| International Paper Company | 598 |
4 |
| Yamauchi Corporation | 96 |
4 |
| Heimbach GmbH & Co. KG | 9 |
3 |
| Valmet AB | 556 |
3 |
| Other owners | 51 |