| Patent Number | Title | Applicant | Opposition Date |
|---|---|---|---|
| EP3228724 | Method For Setting The Thermal Conductivity Of A Steel, Tool Steel, In Particular Hot-Work Steel, And Steel Object | ROVALMA, S.A. | May 8, 2023 |
| EP3173500 | Hot-Working Tool Material, Method For Manufacturing Hot-Working Tool, And Hot-Working Tool | HITACHI METALS, LTD. | Jun 10, 2021 |
| EP3150735 | Hot Work Tool Material And Method For Manufacturing Hot Work Tool | HITACHI METALS, LTD. | Oct 13, 2020 |
| EP3050986 | High-Speed-Tool Steel And Method For Producing Same | HITACHI METALS, LTD. | Feb 21, 2020 |
| EP2682491 | Hot Work Tool Steel Having Excellent Toughness, And Process Of Producing Same | HITACHI METALS, LTD. | Jan 29, 2019 |
| EP2927337 | Precipitation Hardening Type Martensitic Steel And Process For Producing Same | HITACHI METALS, LTD. | Sep 14, 2018 |
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