- 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 3/20 - Compounds of alkali metals or ammonium
Patent holdings for IPC class B27K 3/20
Total number of patents in this class: 68
10-year publication summary
0
|
3
|
11
|
5
|
5
|
5
|
10
|
11
|
7
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
University of Maryland, College Park | 894 |
7 |
American Chemet Corporation | 8 |
5 |
Eth Zurich | 1193 |
3 |
Wood Modification Technologies Ltd | 8 |
3 |
First Point A.S. | 36 |
3 |
M&H Technical Research Institute Co., Ltd. | 4 |
3 |
Arch Wood Protection, Inc. | 94 |
2 |
EMPA Eidgenössische Materialprüfungs-und Forschungsanstalt | 176 |
2 |
Koppers Performance Chemicals Inc. | 129 |
2 |
Northeast Forestry University | 18 |
2 |
T2earth Holdings LLC | 11 |
2 |
Arxada, LLC | 202 |
2 |
Dow Global Technologies LLC | 10147 |
1 |
Arch Wood Protection Pty Ltd | 10 |
1 |
Arclin USA, LLC. | 75 |
1 |
Clariant International Ltd. | 978 |
1 |
FP Wood Oy | 3 |
1 |
Idemitsu Technofine Co., Ltd. | 13 |
1 |
Jiangsu University | 950 |
1 |
Kyoto Prefectural Public University Corporation | 209 |
1 |
Other owners | 24 |