- All sections
- B - Performing operations; transporting
- 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 for; chemical 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: 83
10-year publication summary
4
|
6
|
19
|
6
|
16
|
6
|
4
|
7
|
10
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Koppers Performance Chemicals Inc. | 129 |
21 |
American Chemet Corporation | 8 |
6 |
Arch Wood Protection, Inc. | 94 |
6 |
Osmose Utilities Services, Inc. | 135 |
4 |
Arch Wood Protection Pty Ltd | 10 |
3 |
Eth Zurich | 1193 |
3 |
Troy Corporation | 51 |
3 |
Arch Timber Protection Limited | 53 |
2 |
EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt | 176 |
2 |
Lanxess Deutschland GmbH | 1104 |
2 |
Phibro-Tech, Inc. | 10 |
2 |
Troy Technology II, Inc. | 60 |
2 |
Wood Modification Technologies Ltd | 8 |
2 |
Universidad Del País VASCO / Euskal Herriko Unibertsitatea | 26 |
2 |
Arxada AG | 141 |
2 |
Arxada, LLC | 202 |
2 |
BASF SE | 19740 |
1 |
E. I. du Pont de Nemours and Company | 4345 |
1 |
Rohm and Haas Company | 2805 |
1 |
Dow Global Technologies LLC | 10147 |
1 |
Other owners | 15 |