- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 34/20 - Obtaining niobium, tantalum or vanadium
Patent holdings for IPC class C22B 34/20
Total number of patents in this class: 13
10-year publication summary
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0
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1
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1
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0
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0
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0
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2
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Materion Newton Inc. | 66 |
2 |
| Centre National de La Recherche Scientifique | 10914 |
1 |
| Kyocera Corporation | 14278 |
1 |
| Chevron U.S.A. Inc. | 4117 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11021 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1431 |
1 |
| Erasteel | 30 |
1 |
| Sumitomo Metal Industries, Ltd. | 322 |
1 |
| Universite de Montpellier | 1031 |
1 |
| University of Bradford | 55 |
1 |
| Weee International Recycling, S.L. | 1 |
1 |
| Hannae for T Co., Ltd. | 1 |
1 |
| Other owners | 0 |