- 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: 281
10-year publication summary
|
20
|
20
|
31
|
40
|
25
|
22
|
28
|
27
|
34
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5854 |
52 |
| The Procter & Gamble Company | 22178 |
45 |
| Stora Enso Oyj | 1504 |
26 |
| First Quality Tissue, LLC | 143 |
23 |
| Glatfelter Corporation | 69 |
10 |
| GPCP IP Holdings LLC | 1733 |
8 |
| Essity Hygiene and Health Aktiebolag | 1990 |
5 |
| Billerud AB | 72 |
4 |
| Billerudkorsnas AB | 91 |
4 |
| Domtar Paper Company, LLC | 119 |
4 |
| Kemira Oyj | 1167 |
4 |
| WestRock MWV, LLC | 335 |
4 |
| International Paper Company | 857 |
3 |
| M-real Oyj | 46 |
3 |
| Mayr-Melnhof Karton Aktiengesellschaft | 209 |
3 |
| Tetra Laval Holdings & Finance S.A. | 2007 |
3 |
| DuPont Safety & Construction, Inc. | 676 |
3 |
| Georgia-Pacific Gypsum LLC | 204 |
2 |
| Asahi Kasei Fibers Corporation | 112 |
2 |
| Caraustar Industrial and Consumer Products Group, Inc. | 12 |
2 |
| Other owners | 71 |