- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 3/00 - General features in the manufacture of pig-iron
Patent holdings for IPC class C21B 3/00
Total number of patents in this class: 43
10-year publication summary
|
1
|
1
|
2
|
1
|
0
|
1
|
6
|
2
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6702 |
2 |
| Luossavaara-Kiirunavaara AB | 112 |
2 |
| Newsouth Innovations Pty Limited | 591 |
2 |
| Paul Wurth S.A. | 418 |
2 |
| Technological Resources Pty. Limited | 452 |
2 |
| General Electric Company | 13829 |
1 |
| Samsung SDI Co., Ltd. | 8140 |
1 |
| Air Products and Chemicals, Inc. | 1416 |
1 |
| Amerifab, Inc. | 48 |
1 |
| Bactech Environmental Corporation | 1 |
1 |
| Berry Metal Company | 52 |
1 |
| Ebner Industrieofenbau GmbH | 142 |
1 |
| Ecoloop GmbH | 22 |
1 |
| Foseco International Limited | 212 |
1 |
| Gestion Mcmarland Inc. | 3 |
1 |
| Kobe Steel, Ltd. | 870 |
1 |
| Korea Zinc Co., Ltd. | 87 |
1 |
| Molten Metal Equipment Innovations, Inc. | 9 |
1 |
| Molten Metal Equipment Innovations, LLC | 98 |
1 |
| North American Refractories Company | 15 |
1 |
| Other owners | 18 |