- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 4/08 - Apparatus
Patent holdings for IPC class C22B 4/08
Total number of patents in this class: 83
10-year publication summary
|
12
|
5
|
4
|
7
|
5
|
8
|
6
|
2
|
6
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Elkem AS | 66 |
4 |
| Umicore | 542 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
| Alcoa Inc. | 323 |
3 |
| Clene Nanomedicine, Inc. | 32 |
3 |
| Hatch Ltd. | 219 |
3 |
| Platinum Group Chile SpA | 3 |
3 |
| Centre National de La Recherche Scientifique | 9632 |
2 |
| Global Metal Technologies LLC | 2 |
2 |
| Northeastern University | 493 |
2 |
| Technological Resources Pty. Limited | 444 |
2 |
| Paris Sciences et Lettres - Quartier Latin | 170 |
2 |
| Clean Resources Pte. Ltd | 6 |
2 |
| Tetronics Technologies Limited | 5 |
2 |
| Metso Metals Oy | 205 |
2 |
| Siemens AG | 24990 |
1 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
1 |
| ABB Schweiz AG | 6321 |
1 |
| Advanced Fusion Systems LLC | 66 |
1 |
| Alcoa USA Corp. | 187 |
1 |
| Other owners | 39 |