- 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: 330
10-year publication summary
|
32
|
40
|
25
|
22
|
29
|
27
|
36
|
30
|
22
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5297 |
54 |
| The Procter & Gamble Company | 21920 |
48 |
| Stora Enso Oyj | 1633 |
43 |
| First Quality Tissue, LLC | 159 |
24 |
| Billerud AB | 146 |
13 |
| Glatfelter Corporation | 63 |
10 |
| GPCP IP Holdings LLC | 1543 |
8 |
| Essity Hygiene and Health Aktiebolag | 2040 |
7 |
| Domtar Paper Company, LLC | 123 |
5 |
| Fiberlean Technologies Limited | 104 |
5 |
| Billerudkorsnas AB | 88 |
4 |
| Tetra Laval Holdings & Finance S.A. | 2196 |
4 |
| WestRock MWV, LLC | 330 |
4 |
| Metsä Spring Oy | 39 |
4 |
| DuPont Safety & Construction, Inc. | 674 |
4 |
| Kemira Oyj | 1241 |
3 |
| Certina Production AG | 3 |
3 |
| Georgia-Pacific Gypsum LLC | 225 |
2 |
| Asahi Kasei Fibers Corporation | 95 |
2 |
| Caraustar Industrial and Consumer Products Group, Inc. | 13 |
2 |
| Other owners | 81 |