- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/08 - Sulfuric acid
Patent holdings for IPC class C22B 3/08
Total number of patents in this class: 1111
10-year publication summary
|
55
|
45
|
46
|
65
|
49
|
61
|
114
|
111
|
148
|
113
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1981 |
81 |
| Gem Co., Ltd. | 358 |
32 |
| Korea Zinc Co., Ltd. | 171 |
31 |
| PT Qmb New Energy Materials | 255 |
30 |
| Umicore | 776 |
27 |
| PT ESG New Energy Material | 155 |
27 |
| Jetti Resources, LLC | 39 |
26 |
| BASF SE | 21318 |
23 |
| Kemco | 54 |
17 |
| Metso Finland Oy | 689 |
17 |
| PT Gem Indonesia New Energy Materials | 153 |
16 |
| PT Green Eco Nickel | 102 |
15 |
| JX Nippon Mining & Metals Corporation | 1461 |
14 |
| Korea Institute of Geoscience and Mineral Resources | 255 |
14 |
| Mitsubishi Materials Corporation | 2473 |
14 |
| Technological Resources Pty. Limited | 442 |
14 |
| POSCO Holdings Inc. | 694 |
13 |
| BHP Billiton SSM Development Pty Ltd. | 28 |
10 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1268 |
9 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1226 |
9 |
| Other owners | 672 |