- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment 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: 119
10-year publication summary
|
5
|
5
|
9
|
4
|
11
|
5
|
4
|
3
|
9
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Terralithium LLC | 57 |
11 |
| Freeport Minerals Corporation | 135 |
9 |
| Sumitomo Metal Mining Co., Ltd. | 1974 |
5 |
| ArcelorMittal | 2672 |
4 |
| Outotec Oyj | 236 |
4 |
| Glencore Queensland Limited | 9 |
3 |
| Metaleach Limited | 14 |
3 |
| Metso Finland Oy | 688 |
3 |
| Intermet Technologies Chengdu Co., Ltd | 20 |
2 |
| Metallic Waste Solutions Pty Ltd. | 4 |
2 |
| Paul Wurth S.A. | 432 |
2 |
| China ENFI Engineering Corp. | 109 |
2 |
| Steel Dynamics Investments LLC | 2 |
2 |
| FLSmidth A/S | 789 |
2 |
| Tracegrow Oy | 17 |
2 |
| Anglo American Technical & Sustainability Services Ltd | 70 |
2 |
| ARQ Solutions (es), Inc. | 61 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
1 |
| Eastman Kodak Company | 2603 |
1 |
| Chevron U.S.A. Inc. | 4140 |
1 |
| Other owners | 56 |