- All sections
- B - Performing operations; transporting
- B22D - Casting of metals; casting of other substances by the same processes or devices
- B22D 41/20 - Stopper-rod operating equipment
Patent holdings for IPC class B22D 41/20
Total number of patents in this class: 21
10-year publication summary
|
0
|
1
|
0
|
0
|
0
|
3
|
2
|
1
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Refractory Intellectual Property GmbH & Co. KG | 523 |
5 |
| Danieli & C. Officine Meccaniche S.p.A. | 705 |
2 |
| TPR Co., Ltd. | 151 |
2 |
| TPR Industry Co., Ltd. | 47 |
2 |
| Vesuvius Group S.A. | 89 |
2 |
| Siemens VAI Metals Technologies GmbH | 226 |
1 |
| Amsted Rail Company, Inc. | 437 |
1 |
| Inductotherm Corp. | 158 |
1 |
| SMS Siemag Aktiengesellschaft | 515 |
1 |
| StrikoWestofen GmbH | 28 |
1 |
| Swerea Mefos AB | 2 |
1 |
| Cimo S.r.l. | 1 |
1 |
| Vesuvius - Sert, SAS | 2 |
1 |
| Other owners | 0 |