- 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 27/00 - 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: 2231
10-year publication summary
|
184
|
224
|
188
|
213
|
193
|
184
|
164
|
118
|
102
|
61
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Procter & Gamble Company | 21912 |
516 |
| Kimberly-clark Worldwide, Inc. | 5298 |
256 |
| GPCP IP Holdings LLC | 1543 |
137 |
| Daio Paper Corporation | 1411 |
100 |
| First Quality Tissue, LLC | 160 |
60 |
| Essity Hygiene and Health Aktiebolag | 2040 |
53 |
| Japan Tobacco Inc. | 3511 |
47 |
| KT & G Corporation | 3002 |
39 |
| Nippon Paper Industries Co., Ltd. | 839 |
31 |
| Oji Holdings Corporation | 782 |
27 |
| delfortgroup AG | 155 |
25 |
| UPM-Kymmene Corporation | 981 |
25 |
| Mitsubishi Paper Mills Limited | 227 |
23 |
| Kemira Oyj | 1242 |
22 |
| Structured I, LLC | 62 |
20 |
| Voith Patent GmbH | 2752 |
20 |
| Stora Enso Oyj | 1632 |
18 |
| Kuraray Co., Ltd. | 3578 |
17 |
| Shin-Etsu Chemical Co., Ltd. | 5986 |
15 |
| Nippon Paper Papylia Co., Ltd. | 38 |
14 |
| Other owners | 766 |