- 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 15/12 - Composite fibres partly organic or partly inorganic
Patent holdings for IPC class D21H 15/12
Total number of patents in this class: 17
10-year publication summary
|
3
|
1
|
2
|
1
|
2
|
1
|
2
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Paper Industries Co., Ltd. | 839 |
6 |
| Kemira Oyj | 1244 |
2 |
| Georgia Tech Research Corporation | 2912 |
1 |
| Omya International AG | 778 |
1 |
| Technical Fibre Products Limited | 24 |
1 |
| TODS Aerospace Limited | 2 |
1 |
| Tokushu Paper Mfg. Co., Ltd. | 1 |
1 |
| University of Maryland, College Park | 1077 |
1 |
| Trinity Rail Group, LLC | 109 |
1 |
| Kiss House Ltd | 4 |
1 |
| Envioneer Co., Ltd. | 21 |
1 |
| Other owners | 0 |