- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 3/08 - Sulfuric acid
Patent holdings for IPC class C22B 3/08
Total number of patents in this class: 683
10-year publication summary
|
39
|
70
|
55
|
45
|
46
|
65
|
47
|
59
|
103
|
34
|
| 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 |
76 |
| JX Nippon Mining & Metals Corporation | 1576 |
21 |
| Jetti Resources, LLC | 30 |
17 |
| Umicore | 542 |
16 |
| BASF SE | 19740 |
13 |
| BHP Billiton SSM Development Pty Ltd. | 30 |
12 |
| Korea Zinc Co., Ltd. | 41 |
11 |
| Technological Resources Pty. Limited | 444 |
10 |
| Nemaska Lithium Inc. | 69 |
9 |
| Sherritt International Corporation | 30 |
9 |
| The University of British Columbia | 1432 |
9 |
| Ecopro Materials, Co., Ltd. | 17 |
9 |
| Outotec Oyj | 318 |
8 |
| FLSmidth A/S | 923 |
8 |
| Metso Outotec Finland Oy | 795 |
8 |
| BHP Billiton Innovation Pty Ltd. | 29 |
7 |
| Korea Institute of Geoscience and Mineral Resources | 222 |
7 |
| Li-technology Pty Ltd | 14 |
6 |
| Central South University | 364 |
5 |
| Iluka Resources Limited | 32 |
5 |
| Other owners | 417 |