- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment 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: 305
10-year publication summary
|
20
|
31
|
40
|
25
|
22
|
28
|
27
|
35
|
29
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5515 |
53 |
| The Procter & Gamble Company | 22146 |
45 |
| Stora Enso Oyj | 1605 |
35 |
| First Quality Tissue, LLC | 150 |
23 |
| Glatfelter Corporation | 68 |
10 |
| GPCP IP Holdings LLC | 1684 |
8 |
| Essity Hygiene and Health Aktiebolag | 2016 |
7 |
| Billerud AB | 101 |
6 |
| Domtar Paper Company, LLC | 123 |
5 |
| Fiberlean Technologies Limited | 119 |
5 |
| Billerudkorsnas AB | 91 |
4 |
| Kemira Oyj | 1210 |
4 |
| Tetra Laval Holdings & Finance S.A. | 2076 |
4 |
| WestRock MWV, LLC | 341 |
4 |
| DuPont Safety & Construction, Inc. | 683 |
4 |
| International Paper Company | 814 |
3 |
| M-real Oyj | 38 |
3 |
| Certina Production AG | 3 |
3 |
| Georgia-Pacific Gypsum LLC | 213 |
2 |
| Asahi Kasei Fibers Corporation | 104 |
2 |
| Other owners | 75 |