- All sections
- C - Chemistrymetallurgy
- C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steeltreatment in molten state of ferrous alloys
- C21C 1/00 - Refining of pig-ironCast iron
Patent holdings for IPC class C21C 1/00
Total number of patents in this class: 41
10-year publication summary
|
3
|
3
|
1
|
0
|
3
|
2
|
3
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Governing Council of The University of Toronto, | 1548 |
3 |
| Tenova Goodfellow Inc. | 42 |
3 |
| Seiko Epson Corporation | 20406 |
2 |
| Hoffman & Sons Technologies, LLC | 3 |
2 |
| JFE Steel Corporation | 7617 |
2 |
| Magnesita Refratarios S/A | 9 |
2 |
| SMS Siemag Aktiengesellschaft | 484 |
2 |
| The Regents of the University of California | 20868 |
1 |
| Alamamet GmbH | 1 |
1 |
| The Electric Materials Company | 5 |
1 |
| Elkem AS | 55 |
1 |
| Elkem ASA | 209 |
1 |
| Fundacion Tecnalia Research & Innovation | 226 |
1 |
| Gas Technology Institute | 332 |
1 |
| Kobe Steel, Ltd. | 900 |
1 |
| Newsouth Innovations Pty Limited | 627 |
1 |
| Pyrotek, Inc. | 206 |
1 |
| Rail 1520 IP Ltd. | 9 |
1 |
| Saint-Gobain Pam | 66 |
1 |
| ThyssenKrupp AG | 3332 |
1 |
| Other owners | 12 |