- 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 27/30 - Multi-ply
Patent holdings for IPC class D21H 27/30
Total number of patents in this class: 932
10-year publication summary
84
|
74
|
85
|
100
|
71
|
90
|
72
|
70
|
78
|
16
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
The Procter & Gamble Company | 22178 |
182 |
Kimberly-clark Worldwide, Inc. | 5854 |
64 |
GPCP IP Holdings LLC | 1733 |
61 |
Stora Enso Oyj | 1504 |
60 |
Daio Paper Corporation | 1407 |
55 |
First Quality Tissue, LLC | 143 |
37 |
Essity Hygiene and Health Aktiebolag | 1990 |
17 |
Mercer International Inc. | 30 |
16 |
Billerudkorsnas AB | 91 |
13 |
The Chemours Company Fc, LLC | 1107 |
13 |
Oji Holdings Corporation | 660 |
13 |
E. I. du Pont de Nemours and Company | 4345 |
12 |
Glatfelter Corporation | 69 |
11 |
WestRock MWV, LLC | 335 |
10 |
Kemira Oyj | 1167 |
8 |
Structured I, LLC | 54 |
8 |
Mayr-Melnhof Karton Aktiengesellschaft | 209 |
7 |
Nippon Paper Industries Co., Ltd. | 782 |
7 |
Essity Operations France | 51 |
7 |
Domtar Paper Company, LLC | 119 |
6 |
Other owners | 325 |