- All sections
- D - Textiles; paper
- D21F - Paper-making machines; methods 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: 39
10-year publication summary
|
7
|
4
|
3
|
1
|
4
|
1
|
2
|
2
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
10 |
| GPCP IP Holdings LLC | 1733 |
5 |
| Arjowiggins Security | 143 |
2 |
| Fedrigoni S.p.A. | 243 |
2 |
| The Procter & Gamble Company | 22178 |
1 |
| Albany International Corp. | 311 |
1 |
| De La Rue International Limited | 416 |
1 |
| Eternit N.V. | 31 |
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. | 6 |
1 |
| G.e.d. S.A.S. di Gianni Paolo & C. | 3 |
1 |
| Georgia-Pacific Consumer Products LP | 118 |
1 |
| KT & G Corporation | 1876 |
1 |
| Oberthur Fiduciaire SAS | 159 |
1 |
| Papertech Inc. | 3 |
1 |
| Valmet Technologies, Inc. | 174 |
1 |
| Voith Patent GmbH | 2727 |
1 |
| Etex Services NV | 50 |
1 |
| Other owners | 4 |