- All sections
- D - Textilespaper
- D21H - Pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertreatment of finished paper not covered by class or subclass paper not otherwise provided for
- D21H 27/38 - Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
Patent holdings for IPC class D21H 27/38
Total number of patents in this class: 304
10-year publication summary
|
20
|
31
|
40
|
25
|
22
|
28
|
27
|
36
|
29
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5502 |
53 |
| The Procter & Gamble Company | 22043 |
45 |
| Stora Enso Oyj | 1632 |
34 |
| First Quality Tissue, LLC | 156 |
23 |
| Billerud AB | 124 |
10 |
| Glatfelter Corporation | 70 |
10 |
| GPCP IP Holdings LLC | 1642 |
8 |
| Essity Hygiene and Health Aktiebolag | 2034 |
7 |
| Domtar Paper Company, LLC | 121 |
5 |
| Fiberlean Technologies Limited | 114 |
5 |
| Billerudkorsnas AB | 88 |
4 |
| Tetra Laval Holdings & Finance S.A. | 2135 |
4 |
| WestRock MWV, LLC | 339 |
4 |
| DuPont Safety & Construction, Inc. | 674 |
4 |
| International Paper Company | 791 |
3 |
| Kemira Oyj | 1204 |
3 |
| Certina Production AG | 3 |
3 |
| Georgia-Pacific Gypsum LLC | 219 |
2 |
| Asahi Kasei Fibers Corporation | 99 |
2 |
| Caraustar Industrial and Consumer Products Group, Inc. | 12 |
2 |
| Other owners | 73 |