- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 30/04 - Obtaining arsenic
Patent holdings for IPC class C22B 30/04
Total number of patents in this class: 93
10-year publication summary
12
|
3
|
8
|
11
|
4
|
6
|
1
|
2
|
8
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Dowa Metals & Mining Co., Ltd. | 44 |
12 |
JX Nippon Mining & Metals Corporation | 1576 |
5 |
Kunming University of Science and Technology | 117 |
5 |
Goldcorp Inc. | 15 |
4 |
Outotec (Finland) Oy | 491 |
4 |
Aurubis AG | 56 |
3 |
Central South University | 364 |
3 |
LEIYANG YANXIN NON-FERROUS METALS Co., LTD. | 6 |
3 |
Molibdenos y Metales S.A. | 13 |
3 |
Sherritt International Corporation | 30 |
3 |
Shibaura Institute of Technology | 92 |
3 |
Sumitomo Metal Mining Co., Ltd. | 1670 |
3 |
Eldorado Gold Corporation | 9 |
3 |
Goldcorp Inc. | 6 |
3 |
Mitsubishi Materials Corporation | 2378 |
2 |
Outotec Oyj | 318 |
2 |
Yanxin Environmental Protection and Technology Co., Ltd. | 5 |
2 |
Compañia Minera Pargo Minerals SpA | 4 |
2 |
Metso Outotec Finland Oy | 795 |
2 |
Metso Metals Oy | 205 |
2 |
Other owners | 24 |