- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 7/00 - Other details of machines for making continuous webs of paper
Patent holdings for IPC class D21F 7/00
Total number of patents in this class: 294
10-year publication summary
|
15
|
12
|
19
|
30
|
32
|
24
|
12
|
21
|
10
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2749 |
57 |
| Seiko Epson Corporation | 20256 |
34 |
| Metso Paper, Inc. | 338 |
18 |
| MainTech Co., Ltd. | 66 |
15 |
| GPCP IP Holdings LLC | 1529 |
11 |
| Paprima Industries Inc. | 22 |
10 |
| Valmet AB | 554 |
9 |
| Valmet Automation Oy | 111 |
8 |
| Honeywell Limited | 111 |
7 |
| Honeywell ASCa Inc. | 99 |
7 |
| Valmet Technologies, Inc. | 136 |
6 |
| Kimberly-clark Worldwide, Inc. | 5308 |
5 |
| Andritz AG | 244 |
5 |
| Intpro, LLC | 22 |
5 |
| The Procter & Gamble Company | 21855 |
4 |
| Andritz Technology and Asset Management GmbH | 78 |
4 |
| IBS of America | 26 |
4 |
| Runtech Systems Oy | 23 |
4 |
| Valmet Technologies Oy | 288 |
4 |
| Georgia-Pacific LLC | 115 |
3 |
| Other owners | 74 |