- All sections
- B - Performing operationstransporting
- B27K - Processes, apparatus or selection of substances for impregnating, staining, dyeing or bleaching of wood, or for treating of wood with permeant liquids, not otherwise provided forchemical or physical treatment of cork, cane, reed, straw or similar materials
- B27K 3/20 - Compounds of alkali metals or ammonium
Patent holdings for IPC class B27K 3/20
Total number of patents in this class: 77
10-year publication summary
|
11
|
5
|
5
|
5
|
11
|
11
|
8
|
8
|
5
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| University of Maryland, College Park | 1087 |
9 |
| American Chemet Corporation | 8 |
5 |
| Koppers Performance Chemicals Inc. | 120 |
4 |
| T2earth Holdings LLC | 18 |
4 |
| Eth Zurich | 1327 |
3 |
| Wood Modification Technologies Ltd | 11 |
3 |
| First Point A.S. | 36 |
3 |
| Arch Wood Protection, Inc. | 87 |
2 |
| EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt | 204 |
2 |
| Northeast Forestry University | 34 |
2 |
| Arxada, LLC | 254 |
2 |
| M&H Technical Research Institute Co., Ltd. | 2 |
2 |
| M&HTechnical Research Institute Co., LTD. | 2 |
2 |
| Hyundai Motor Company | 24808 |
1 |
| Dow Global Technologies LLC | 10994 |
1 |
| Arch Wood Protection Pty Ltd | 10 |
1 |
| Arclin USA, LLC. | 93 |
1 |
| Clariant International Ltd. | 892 |
1 |
| FP Wood Oy | 3 |
1 |
| Jiangsu University | 1174 |
1 |
| Other owners | 27 |