- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 19/04 - Obtaining zinc by distilling
Patent holdings for IPC class C22B 19/04
Total number of patents in this class: 24
10-year publication summary
|
3
|
0
|
0
|
1
|
0
|
3
|
1
|
2
|
3
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Glencore Technology Pty Ltd | 46 |
4 |
| Chugai Ro Co., Ltd. | 124 |
3 |
| Umicore | 542 |
3 |
| Guizhou University | 29 |
2 |
| TCM Research Ltd. | 6 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Beijing University of Technology | 437 |
1 |
| Betek GmbH & Co. KG | 140 |
1 |
| Cardero Resource Corporation | 3 |
1 |
| Chubu Electric Power Co., Inc. | 44 |
1 |
| Outotec (Finland) Oy | 491 |
1 |
| Tata Steel Ijmuiden B.V. | 283 |
1 |
| Tata Steel Limited | 184 |
1 |
| Tokuden Co., Ltd. | 38 |
1 |
| MG Century Mining Corporation | 3 |
1 |
| Other owners | 0 |