- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 19/20 - Obtaining zinc otherwise than by distilling
Patent holdings for IPC class C22B 19/20
Total number of patents in this class: 106
10-year publication summary
5
|
11
|
6
|
4
|
3
|
11
|
15
|
6
|
7
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Metal Mining Co., Ltd. | 1670 |
7 |
Outotec Oyj | 318 |
6 |
Metaleach Limited | 18 |
5 |
Korea Mine Rehabilitation and Mineral Resources Corporation | 11 |
4 |
Kinotech Corporation | 5 |
4 |
BASF SE | 19740 |
3 |
Servicios Condumex, S.A. de C.V. | 59 |
3 |
Kinaltek Pty. Ltd. | 6 |
3 |
Chongqing Dongqun Technology Co., Ltd. | 5 |
3 |
Metso Outotec Finland Oy | 795 |
3 |
Anglo Operations Limited | 16 |
2 |
Beijing University of Technology | 437 |
2 |
Canadus Chemical, LLC | 3 |
2 |
JNC Corporation | 1527 |
2 |
JX Nippon Mining & Metals Corporation | 1576 |
2 |
Metals Technology Development Company LLC | 8 |
2 |
TAM 5, S.L. | 2 |
2 |
Yava Technologies Inc. | 9 |
2 |
China ENFI Engineering Corp. | 91 |
2 |
Terralithium LLC | 52 |
2 |
Other owners | 45 |