- 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: 314
10-year publication summary
|
20
|
27
|
33
|
24
|
19
|
27
|
24
|
34
|
29
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5430 |
53 |
| The Procter & Gamble Company | 21996 |
45 |
| Stora Enso Oyj | 1660 |
36 |
| First Quality Tissue, LLC | 156 |
23 |
| Billerud AB | 127 |
13 |
| Glatfelter Corporation | 69 |
10 |
| GPCP IP Holdings LLC | 1634 |
8 |
| Essity Hygiene and Health Aktiebolag | 2056 |
7 |
| Domtar Paper Company, LLC | 122 |
5 |
| Fiberlean Technologies Limited | 114 |
5 |
| Billerudkorsnas AB | 88 |
4 |
| Tetra Laval Holdings & Finance S.A. | 2176 |
4 |
| WestRock MWV, LLC | 338 |
4 |
| DuPont Safety & Construction, Inc. | 703 |
4 |
| International Paper Company | 784 |
3 |
| Kemira Oyj | 1219 |
3 |
| M-real Oyj | 26 |
3 |
| Metsä Spring Oy | 37 |
3 |
| Certina Production AG | 3 |
3 |
| Georgia-Pacific Gypsum LLC | 215 |
2 |
| Other owners | 76 |