- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 9/04 - Complete machines for making continuous webs of paper of the cylinder type
Patent holdings for IPC class D21F 9/04
Total number of patents in this class: 35
10-year publication summary
|
3
|
1
|
4
|
1
|
2
|
2
|
3
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 20327 |
10 |
| GPCP IP Holdings LLC | 1530 |
4 |
| Arjowiggins Security | 113 |
2 |
| Fedrigoni S.p.A. | 264 |
2 |
| The Procter & Gamble Company | 21853 |
1 |
| De La Rue International Limited | 365 |
1 |
| Eternit N.V. | 39 |
1 |
| Eurasia EP Machinery Co., Ltd. | 2 |
1 |
| Eurasia Light Industry Equipment Manufacture Co., Ltd. | 3 |
1 |
| Eurasia Machinery Manufacture Co., Ltd. | 2 |
1 |
| GBS Co., Ltd. | 5 |
1 |
| G.e.d. S.A.S. di Gianni Paolo & C. | 3 |
1 |
| Georgia-Pacific Consumer Products LP | 100 |
1 |
| KT & G Corporation | 3141 |
1 |
| Valmet Technologies, Inc. | 136 |
1 |
| Voith Patent GmbH | 2743 |
1 |
| Etex Services NV | 61 |
1 |
| Tianbo Zheng | 2 |
1 |
| Portals de La Rue Limited | 2 |
1 |
| BS Co., Ltd. | 4 |
1 |
| Other owners | 1 |