- 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: 48
10-year publication summary
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2
|
3
|
3
|
1
|
0
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3
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2
|
3
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1
|
0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19281 |
6 |
| The Governing Council of The University of Toronto, | 1466 |
3 |
| Tenova Goodfellow Inc. | 43 |
3 |
| Hoffman & Sons Technologies, LLC | 3 |
2 |
| JFE Steel Corporation | 6794 |
2 |
| Magnesita Refratarios S/A | 9 |
2 |
| SMS Siemag Aktiengesellschaft | 507 |
2 |
| The Regents of the University of California | 19839 |
1 |
| Air Liquide Advanced Technologies U.S. LLC | 89 |
1 |
| Alamamet GmbH | 1 |
1 |
| The Electric Materials Company | 5 |
1 |
| Elkem AS | 61 |
1 |
| Elkem ASA | 205 |
1 |
| Fundacion Tecnalia Research & Innovation | 216 |
1 |
| Gas Technology Institute | 354 |
1 |
| Kobe Steel, Ltd. | 871 |
1 |
| Maanshan Iron & Steel Co. Ltd. | 29 |
1 |
| Magang (Group) Holding Co. Ltd. | 6 |
1 |
| Newsouth Innovations Pty Limited | 591 |
1 |
| Pyrotek, Inc. | 201 |
1 |
| Other owners | 15 |