- 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 5/44 - Refractory linings
Patent holdings for IPC class C21C 5/44
Total number of patents in this class: 85
10-year publication summary
|
5
|
4
|
6
|
5
|
6
|
4
|
5
|
5
|
12
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Refractory Intellectual Property GmbH & Co. KG | 569 |
14 |
| Krosakiharima Corporation | 297 |
5 |
| Vesuvius Group S.A. | 111 |
5 |
| Harbisonwalker International Holdings, Inc. | 57 |
5 |
| Harbisonwalker International, Inc. | 245 |
4 |
| Primetals Technologies Austria GmbH | 575 |
4 |
| Paul Wurth S.A. | 430 |
3 |
| Shinagawa Refractories Co., Ltd. | 50 |
3 |
| ArcelorMittal | 2680 |
2 |
| Inductotherm Corp. | 154 |
2 |
| Novelis Inc. | 781 |
2 |
| SMS Siemag Aktiengesellschaft | 486 |
2 |
| Techemet, LP, composed of Techemet Holdings, Inc., General Partner | 16 |
2 |
| Siemens VAI Metals Technologies GmbH | 204 |
1 |
| Lam Research Corporation | 5642 |
1 |
| ArcelorMittal Investigacion y Desarrollo SL | 207 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 1104 |
1 |
| Berry Metal Company | 50 |
1 |
| BlueScope Steel Limited | 210 |
1 |
| Danieli & C. Officine Meccaniche S.p.A. | 721 |
1 |
| Other owners | 25 |