- All sections
- D - Textilespaper
- D21F - Paper-making machinesmethods of producing paper thereon
- D21F 13/00 - Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production
Patent holdings for IPC class D21F 13/00
Total number of patents in this class: 63
10-year publication summary
|
1
|
3
|
6
|
4
|
10
|
5
|
3
|
10
|
3
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| First Quality Tissue, LLC | 158 |
8 |
| Seiko Epson Corporation | 19851 |
6 |
| KIEFEL GmbH | 150 |
3 |
| PAPACKS SALES GmbH | 57 |
3 |
| The Regents of the University of California | 20427 |
2 |
| Ibiden Co., Ltd. | 1685 |
2 |
| Georgia-Pacific Chemicals LLC | 134 |
2 |
| Eastman Chemical Company | 2098 |
2 |
| Krones AG | 2249 |
2 |
| GPCP IP Holdings LLC | 1578 |
2 |
| Kahramanmaras Kagit Sanayi ve Tic. A. S. | 3 |
2 |
| The Procter & Gamble Company | 21979 |
1 |
| Kao Corporation | 5031 |
1 |
| Northwestern University | 3493 |
1 |
| AFI Licensing LLC | 234 |
1 |
| B.A. Lancaster Limited | 2 |
1 |
| De La Rue International Limited | 374 |
1 |
| Fameccanica.Data S.p.A. | 217 |
1 |
| Friction Products Company, LLC | 1 |
1 |
| Honeywell ASCa Inc. | 102 |
1 |
| Other owners | 20 |