- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 1/02 - Roasting processes
Patent holdings for IPC class C22B 1/02
Total number of patents in this class: 529
10-year publication summary
34
|
23
|
18
|
22
|
25
|
32
|
43
|
47
|
87
|
41
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Metal Mining Co., Ltd. | 1670 |
40 |
JX Nippon Mining & Metals Corporation | 1576 |
28 |
Guangdong Brunp Recycling Technology Co., Ltd | 674 |
21 |
Hunan Brunp Recycling Technology Co., Ltd. | 622 |
21 |
Nemaska Lithium Inc. | 69 |
12 |
Hunan Brunp EV Recycling Co., Ltd. | 327 |
10 |
Hitachi Metals, Ltd. | 2175 |
9 |
Hunan Brunp Vehicles Recycling Co., Ltd. | 73 |
8 |
JFE Steel Corporation | 6067 |
7 |
Northeastern University | 493 |
6 |
University of Leeds | 279 |
6 |
The Boeing Company | 19843 |
5 |
Asaka Riken Co., Ltd. | 35 |
5 |
Dowa ECO-SYSTEM Co., Ltd. | 51 |
5 |
Mitsubishi Materials Corporation | 2378 |
5 |
Peloton Resources Pty Ltd | 10 |
5 |
Newcrest Mining Limited | 38 |
5 |
BASF SE | 19740 |
4 |
Ecotec Gestione Impianti S.r.l. | 9 |
4 |
Grirem Advanced Materials Co., Ltd. | 114 |
4 |
Other owners | 319 |