- 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 3/22 - Compounds of zinc or copper
Patent holdings for IPC class B27K 3/22
Total number of patents in this class: 90
10-year publication summary
|
6
|
19
|
6
|
16
|
6
|
4
|
7
|
12
|
9
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Koppers Performance Chemicals Inc. | 124 |
20 |
| Arxada AG | 165 |
7 |
| American Chemet Corporation | 8 |
6 |
| Arch Wood Protection, Inc. | 89 |
6 |
| Osmose Utilities Services, Inc. | 148 |
4 |
| Arxada, LLC | 217 |
4 |
| Arch Wood Protection Pty Ltd | 10 |
3 |
| Eth Zurich | 1275 |
3 |
| Troy Corporation | 47 |
3 |
| Arch Timber Protection Limited | 52 |
2 |
| EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt | 188 |
2 |
| Lanxess Deutschland GmbH | 1117 |
2 |
| Troy Technology II, Inc. | 61 |
2 |
| Wood Modification Technologies Ltd | 8 |
2 |
| Universidad Del País VASCO / Euskal Herriko Unibertsitatea | 32 |
2 |
| BASF SE | 20915 |
1 |
| E. I. du Pont de Nemours and Company | 4071 |
1 |
| Rohm and Haas Company | 2870 |
1 |
| Dow Global Technologies LLC | 10332 |
1 |
| Georgia Tech Research Corporation | 2736 |
1 |
| Other owners | 17 |