- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 1/16 - SinteringAgglomerating
Patent holdings for IPC class C22B 1/16
Total number of patents in this class: 411
10-year publication summary
|
19
|
17
|
16
|
12
|
12
|
31
|
26
|
46
|
39
|
37
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7721 |
104 |
| Nippon Steel Corporation | 7135 |
39 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2851 |
38 |
| POSCO | 2139 |
13 |
| Freeport Minerals Corporation | 150 |
9 |
| Luossavaara-Kiirunavaara AB | 129 |
9 |
| Zhongye Changtian International Engineering Co., Ltd. | 79 |
7 |
| Outotec Oyj | 232 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 2023 |
6 |
| Vale S.A. | 263 |
6 |
| Nu-Iron Technology, LLC | 27 |
5 |
| Technological Resources Pty. Limited | 440 |
5 |
| Kronos International, Inc. | 115 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1980 |
4 |
| Outotec (Finland) Oy | 455 |
4 |
| BHP Chile Inc. | 23 |
3 |
| Northeastern University | 584 |
3 |
| Paul Wurth S.A. | 438 |
3 |
| Antofagasta Minerals S.A. | 17 |
2 |
| Belenos Clean Power Holding AG | 112 |
2 |
| Other owners | 139 |