- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/48 - Suction apparatus
Patent holdings for IPC class D21F 1/48
Total number of patents in this class: 91
10-year publication summary
|
5
|
6
|
7
|
7
|
4
|
3
|
4
|
1
|
7
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2756 |
18 |
| IBS of America | 26 |
11 |
| Metso Paper, Inc. | 424 |
11 |
| Kimberly-clark Worldwide, Inc. | 5504 |
5 |
| Seiko Epson Corporation | 19319 |
4 |
| AstenJohnson, Inc. | 128 |
4 |
| Valmet Technologies, Inc. | 147 |
4 |
| The Procter & Gamble Company | 22037 |
2 |
| Andritz Inc. | 333 |
2 |
| Fcpapel LLC | 2 |
2 |
| Moventas Oy | 7 |
2 |
| Runtech Systems Oy | 24 |
2 |
| Valmet AB | 503 |
2 |
| Bmic LLC | 725 |
2 |
| Fibu AB | 3 |
2 |
| Andritz AG | 232 |
1 |
| Andritz Kusters GmbH | 56 |
1 |
| Chan Li Machinery Co., Ltd. | 33 |
1 |
| Johns Manville | 953 |
1 |
| KIEFEL GmbH | 137 |
1 |
| Other owners | 13 |