- 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 21/34 - Ignifugeants
Patent holdings for IPC class D21H 21/34
Total number of patents in this class: 109
10-year publication summary
|
7
|
7
|
6
|
8
|
6
|
10
|
11
|
10
|
6
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6978 |
7 |
| International Paper Company | 785 |
5 |
| Sabic Innovative Plastics IP B.V. | 681 |
3 |
| Nature Tech LLC | 8 |
3 |
| SABIC Global Technologies B.V. | 4366 |
3 |
| DuPont Safety & Construction, Inc. | 704 |
3 |
| SWM Holdings US, LLC | 49 |
3 |
| E. I. du Pont de Nemours and Company | 4000 |
2 |
| Philip Morris Products S.A. | 7698 |
2 |
| Asahi Kasei Fibers Corporation | 99 |
2 |
| Bradley University | 12 |
2 |
| Denka Company Limited | 2604 |
2 |
| Japan Tobacco Inc. | 3594 |
2 |
| Jiangnan University | 1538 |
2 |
| KT & G Corporation | 2651 |
2 |
| MP Global Products, LLC | 96 |
2 |
| Organowood AB | 9 |
2 |
| Packaging and Crating Technologies, LLC | 11 |
2 |
| Rengo Co., Ltd. | 56 |
2 |
| Swift Textile Metalizing, LLC | 9 |
2 |
| Other owners | 56 |