- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/10 - Hydrochloric acid
Patent holdings for IPC class C22B 3/10
Total number of patents in this class: 558
10-year publication summary
|
29
|
17
|
30
|
31
|
28
|
28
|
38
|
45
|
74
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Johnson Matthey Public Limited Company | 1765 |
13 |
| Sumitomo Metal Mining Co., Ltd. | 2011 |
13 |
| Asaka Riken Co., Ltd. | 52 |
11 |
| AEM Technologies Inc. | 36 |
11 |
| Nova Mineralis S.A. | 13 |
10 |
| Orbite Aluminae Inc. | 14 |
10 |
| JX Nippon Mining & Metals Corporation | 1454 |
9 |
| Korea Institute of Geoscience and Mineral Resources | 260 |
8 |
| AEM Canada Group Inc. | 13 |
8 |
| Metso Finland Oy | 695 |
8 |
| Alliance Magnesium | 19 |
7 |
| BHP Chile Inc. | 22 |
7 |
| Mitsubishi Materials Corporation | 2482 |
7 |
| Orf Technologies Inc. | 9 |
7 |
| Battelle Energy Alliance, LLC | 585 |
6 |
| Commonwealth Scientific and Industrial Research Organisation | 1650 |
6 |
| Korea Zinc Co., Ltd. | 174 |
6 |
| Reed Advanced Materials Pty Ltd | 15 |
6 |
| Grirem Advanced Materials Co., Ltd. | 140 |
5 |
| Process Research Ortech Inc. | 6 |
5 |
| Other owners | 395 |