- 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 27/00 - Special paper not otherwise provided for, e.g. made by multi-step processes
Patent holdings for IPC class D21H 27/00
Total number of patents in this class: 2100
10-year publication summary
|
171
|
167
|
184
|
224
|
188
|
211
|
191
|
181
|
157
|
36
|
| 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 |
488 |
| Kimberly-clark Worldwide, Inc. | 5854 |
241 |
| GPCP IP Holdings LLC | 1733 |
148 |
| Daio Paper Corporation | 1407 |
103 |
| Japan Tobacco Inc. | 3225 |
52 |
| First Quality Tissue, LLC | 143 |
50 |
| Essity Hygiene and Health Aktiebolag | 1990 |
47 |
| KT & G Corporation | 1876 |
30 |
| Nippon Paper Industries Co., Ltd. | 782 |
30 |
| delfortgroup AG | 147 |
23 |
| Mitsubishi Paper Mills Limited | 246 |
22 |
| Kemira Oyj | 1167 |
20 |
| Kuraray Co., Ltd. | 3392 |
18 |
| Oji Holdings Corporation | 660 |
18 |
| Stora Enso Oyj | 1504 |
18 |
| Structured I, LLC | 54 |
18 |
| UPM-Kymmene Corporation | 868 |
15 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
14 |
| Mercer International Inc. | 30 |
14 |
| International Paper Company | 857 |
13 |
| Other owners | 718 |