- All sections
- D - Textilespaper
- D04H - Making textile fabrics, e.g. from fibres or filamentary materialfabrics made by such processes or apparatus, e.g. felts, non-woven fabricscotton-woolwadding
- D04H 1/4209 - Inorganic fibres
Patent holdings for IPC class D04H 1/4209
Total number of patents in this class: 487
10-year publication summary
|
31
|
34
|
44
|
48
|
33
|
48
|
46
|
43
|
52
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Isover | 632 |
88 |
| Rockwool A/S | 782 |
56 |
| ROCKWOOL International A/S | 307 |
31 |
| 3m Innovative Properties Company | 17852 |
29 |
| Knauf Insulation SPRL | 173 |
21 |
| Ibiden Co., Ltd. | 1702 |
20 |
| Nichias Corporation | 392 |
18 |
| Owens Corning Intellectual Capital, LLC | 1634 |
13 |
| MAFTEC Co., Ltd. | 31 |
12 |
| Knauf Insulation, Inc. | 191 |
10 |
| Denka Company Limited | 2565 |
7 |
| Johns Manville | 954 |
7 |
| Mitsubishi Chemical Corporation | 4496 |
6 |
| Ursa Insulation, S.A. | 31 |
6 |
| The Procter & Gamble Company | 22028 |
5 |
| Nissin Chemical Industry Co., Ltd. | 107 |
5 |
| Cabot Corporation | 551 |
5 |
| Zephyros, Inc. | 655 |
5 |
| Thermal Ceramics UK Limited | 17 |
5 |
| Toray Industries, Inc. | 6935 |
4 |
| Other owners | 134 |