- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 1/20 - Sintering; Agglomerating in sintering machines with movable grates
Patent holdings for IPC class C22B 1/20
Total number of patents in this class: 151
10-year publication summary
|
10
|
10
|
11
|
20
|
8
|
1
|
3
|
6
|
10
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
36 |
| Outotec (Finland) Oy | 491 |
14 |
| Luossavaara-Kiirunavaara AB | 78 |
11 |
| POSCO | 2222 |
11 |
| Nippon Steel Corporation | 5649 |
8 |
| Outotec Oyj | 318 |
8 |
| Metso Metals Oy | 205 |
6 |
| Metso Outotec Finland Oy | 795 |
5 |
| JP Steel Plantech Co. | 80 |
3 |
| Primetals Technologies Austria GmbH | 479 |
3 |
| Rheinkalk GmbH | 30 |
3 |
| Vale S.A. | 262 |
3 |
| Metal 7 Inc. | 7 |
3 |
| Zhongye Changtian International Engineering Co., Ltd. | 73 |
3 |
| Siemens VAI Metals Technologies GmbH | 233 |
2 |
| Metso Minerals Industries, Inc. | 74 |
2 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
2 |
| Paul Wurth S.A. | 392 |
2 |
| Tokuden Co., Ltd. | 38 |
2 |
| Board of Regents, The University of Texas System | 5370 |
1 |
| Other owners | 23 |