- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 1/04 - Blast roasting
Patent holdings for IPC class C22B 1/04
Total number of patents in this class: 43
10-year publication summary
|
3
|
1
|
6
|
1
|
4
|
1
|
3
|
6
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Blucher GmbH | 178 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1779 |
5 |
| JFE Material Co., Ltd. | 15 |
2 |
| Outotec (Finland) Oy | 480 |
2 |
| Sumitomo Heavy Industries, Ltd. | 1927 |
2 |
| Worcester Polytechnic Institute | 512 |
2 |
| Compañia Minera Pargo Minerals SpA | 4 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8715 |
1 |
| Hitachi, Ltd. | 15484 |
1 |
| Chevron U.S.A. Inc. | 3955 |
1 |
| Anglo Platinum Management Services (Pty) Ltd | 1 |
1 |
| Asaka Riken Co., Ltd. | 49 |
1 |
| Commonwealth Scientific and Industrial Research Organisation | 1651 |
1 |
| Ecolab USA Inc. | 5480 |
1 |
| Fives FCB | 58 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2874 |
1 |
| Rustenburg Platinum Mines Limited | 3 |
1 |
| Santoku Corporation | 86 |
1 |
| Swinburne University of Technology | 60 |
1 |
| Umicore | 642 |
1 |
| Other owners | 9 |