- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 19/00 - Obtaining zinc or zinc oxide
Patent holdings for IPC class C22B 19/00
Total number of patents in this class: 106
10-year publication summary
|
9
|
6
|
5
|
5
|
9
|
4
|
10
|
5
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terralithium LLC | 52 |
10 |
| Freeport Minerals Corporation | 80 |
7 |
| Outotec Oyj | 318 |
7 |
| Sumitomo Metal Mining Co., Ltd. | 1670 |
5 |
| ArcelorMittal | 1887 |
3 |
| Glencore Queensland Limited | 9 |
3 |
| Metaleach Limited | 18 |
3 |
| Steel Dynamics Investments LLC | 3 |
3 |
| Metso Outotec Finland Oy | 795 |
3 |
| Cognis IP Management GmbH | 708 |
2 |
| Intermet Technologies Chengdu Co., Ltd | 20 |
2 |
| Metallic Waste Solutions Pty Ltd. | 4 |
2 |
| Paul Wurth S.A. | 392 |
2 |
| China ENFI Engineering Corp. | 91 |
2 |
| FLSmidth A/S | 923 |
2 |
| Tracegrow Oy | 16 |
2 |
| ARQ Solutions (es), Inc. | 58 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Eastman Kodak Company | 3444 |
1 |
| Chevron U.S.A. Inc. | 3774 |
1 |
| Other owners | 43 |