- All sections
- C - Chemistrymetallurgy
- C01D - Compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium
- C01D 5/04 - Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process
Patent holdings for IPC class C01D 5/04
Total number of patents in this class: 5
10-year publication summary
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0
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0
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1
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3
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1
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0
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0
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Iogen Corporation | 148 |
1 |
| Kangwon National University University-industry Cooperation Foundation | 41 |
1 |
| POSCO | 2186 |
1 |
| Research Institute of Industrial Science & Technology | 503 |
1 |
| Veolia Water Technologies, Inc. | 77 |
1 |
| Other owners | 0 |