- All sections
- C - Chemistry; metallurgy
- C21B - Manufacture of iron or steel
- C21B 3/04 - Recovery of by-products, e.g. slag
Patent holdings for IPC class C21B 3/04
Total number of patents in this class: 88
10-year publication summary
|
10
|
9
|
3
|
5
|
3
|
4
|
6
|
3
|
5
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tata Steel Limited | 184 |
5 |
| ArcelorMittal | 1887 |
2 |
| The Governing Council of The University of Toronto, | 1361 |
2 |
| Loesche GmbH | 78 |
2 |
| Recoval Belgium | 13 |
2 |
| Tenova Goodfellow Inc. | 44 |
2 |
| Tetron, Inc. | 3 |
2 |
| RIA Cast House Engineering GmbH | 2 |
2 |
| South Wales Minerals & Mining Ltd. | 2 |
2 |
| Gron Metallic Group, Inc. | 2 |
2 |
| BASF SE | 19740 |
1 |
| E. I. du Pont de Nemours and Company | 4345 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Industrial Technology Research Institute | 4898 |
1 |
| Siemens Energy, Inc. | 1770 |
1 |
| Altek, L.L.C. | 16 |
1 |
| Aquablok, Ltd | 28 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
1 |
| The Chemours Company Fc, LLC | 1107 |
1 |
| CO2 Solutions Inc. | 26 |
1 |
| Other owners | 55 |