- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 34/32 - Obtaining chromium
Patent holdings for IPC class C22B 34/32
Total number of patents in this class: 81
10-year publication summary
11
|
11
|
6
|
6
|
8
|
10
|
5
|
2
|
11
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Companhia Brasileira de Metalurgia e Mineracao | 16 |
6 |
South China University of Technology | 1581 |
4 |
Aperam | 104 |
3 |
Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources | 105 |
3 |
JFE Material Co., Ltd. | 16 |
3 |
Hitachi, Ltd. | 16452 |
2 |
Dalian University of Technology | 1387 |
2 |
Guangdong Brunp Recycling Technology Co., Ltd | 674 |
2 |
Her Majesty The Queen in Right of Canada AS represented by The Minister of Natural Resources Canada | 89 |
2 |
Hunan Brunp Recycling Technology Co., Ltd. | 622 |
2 |
Midrex Technologies, Inc. | 103 |
2 |
Nippon Steel Corporation | 5649 |
2 |
North-West University | 56 |
2 |
Outotec (Finland) Oy | 491 |
2 |
Sumitomo Metal Mining Co., Ltd. | 1670 |
2 |
Tata Steel Limited | 184 |
2 |
MM Metals USA, LLC | 10 |
2 |
Sinosteel Maanshan General Institute of Mining Research Co., Ltd | 31 |
2 |
Helios Project Ltd. | 8 |
2 |
BASF SE | 19740 |
1 |
Other owners | 33 |