- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 1/06 - Regulating pulp flow
Patent holdings for IPC class D21F 1/06
Total number of patents in this class: 38
10-year publication summary
|
2
|
2
|
0
|
1
|
1
|
1
|
1
|
4
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Voith Patent GmbH | 2762 |
10 |
| Kimberly-clark Worldwide, Inc. | 5502 |
4 |
| Seiko Epson Corporation | 19398 |
4 |
| AstenJohnson, Inc. | 128 |
2 |
| International Paper Company | 788 |
2 |
| Sulzer Management AG | 667 |
2 |
| Yokogawa Electric Corporation | 1758 |
2 |
| Honeywell International Inc. | 13540 |
1 |
| Andritz Inc. | 331 |
1 |
| Honeywell ASCa Inc. | 107 |
1 |
| Metso Paper, Inc. | 422 |
1 |
| Nippon Paper Industries Co., Ltd. | 832 |
1 |
| Runtech Systems Oy | 23 |
1 |
| S.A. Giuseppe Cristini S.p.A. | 26 |
1 |
| Stfi, Skogsindustrins Tekniska Forskningsinstitut AB | 1 |
1 |
| Structured I, LLC | 58 |
1 |
| Valmet AB | 508 |
1 |
| Wetend Technologies Oy | 27 |
1 |
| Tasowheel Systems Oy | 1 |
1 |
| Other owners | 0 |