- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 9/06 - Linings
Patent holdings for IPC class C21B 9/06
Total number of patents in this class: 24
10-year publication summary
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0
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1
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0
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2
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1
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2
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2
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1
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1
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Paul Wurth S.A. | 419 |
4 |
| Paul Wurth Deutschland GmbH | 24 |
3 |
| Air Products and Chemicals, Inc. | 1423 |
2 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
2 |
| Refractory Intellectual Property GmbH & Co. KG | 545 |
2 |
| Harbisonwalker International Holdings, Inc. | 48 |
2 |
| Siemens Plc | 71 |
1 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 184 |
1 |
| Paul Wurth Refractory & Engineering GmbH | 12 |
1 |
| Primetals Technologies, Limited | 32 |
1 |
| SABIC Global Technologies B.V. | 4341 |
1 |
| Allied Mineral Products, LLC | 44 |
1 |
| Paul Wurth IHI Co., Ltd. | 9 |
1 |
| Obshchestvo S Ogranichennoj Otvetstvennost'yu "seven Refraktoriz" | 1 |
1 |
| Brevet Concept SRL | 1 |
1 |
| Other owners | 0 |