- 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 13/40 - Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool or glass fibres
Patent holdings for IPC class D21H 13/40
Total number of patents in this class: 121
10-year publication summary
|
14
|
7
|
10
|
5
|
7
|
9
|
13
|
5
|
7
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Johns Manville | 947 |
11 |
| Owens Corning Intellectual Capital, LLC | 1625 |
10 |
| OCV Intellectual Capital, LLC | 175 |
6 |
| Hokuetsu Corporation | 65 |
5 |
| Oji Holdings Corporation | 738 |
4 |
| Donaldson Company, Inc. | 1588 |
3 |
| Hokuetsu Kishu Paper Co., Ltd. | 13 |
3 |
| USG Interiors, LLC | 308 |
3 |
| Paptic Ltd | 6 |
3 |
| Fiberlean Technologies Limited | 112 |
2 |
| Johns Manville Europe GmbH | 13 |
2 |
| Kuraray Co., Ltd. | 3531 |
2 |
| Nichias Corporation | 394 |
2 |
| Paptic Oy | 29 |
2 |
| Saint-Gobain Ecophon AB | 181 |
2 |
| Saint-Gobain Isover | 618 |
2 |
| Teijin Aramid B.V. | 168 |
2 |
| Thermal Ceramics Inc. | 23 |
2 |
| UT-Battelle, LLC | 1473 |
2 |
| Ahlstrom Oyj | 116 |
2 |
| Other owners | 51 |