- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 1/11 - Removing sulfur, phosphorus or arsenic, other than by roasting
Patent holdings for IPC class C22B 1/11
Total number of patents in this class: 97
10-year publication summary
|
8
|
10
|
7
|
6
|
2
|
10
|
7
|
6
|
5
|
6
|
| 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. | 1971 |
5 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
4 |
| Kyushu University, National University Corporation | 1707 |
4 |
| Glencore Technology Pty Ltd | 54 |
3 |
| Hatch Ltd. | 220 |
3 |
| JX Nippon Mining & Metals Corporation | 1461 |
3 |
| Shibaura Institute of Technology | 102 |
3 |
| Eldorado Gold Corporation | 11 |
3 |
| Cobalt Blue Holdings Limited | 3 |
3 |
| Alderley Gold Corp. | 6 |
3 |
| Barrick Gold Corporation | 27 |
2 |
| Aqua Metals, Inc. | 35 |
2 |
| Biosigma S.A. | 12 |
2 |
| Boliden Mineral AB | 7 |
2 |
| HYL Technologies, S.A. de C.V. | 46 |
2 |
| JFE Steel Corporation | 7508 |
2 |
| Kemetco Research Inc. | 3 |
2 |
| Nittetsu Mining Co., Ltd. | 31 |
2 |
| FLSmidth A/S | 787 |
2 |
| Rio Tinto Technological Resources Inc. | 16 |
2 |
| Other owners | 43 |