THYSSENKRUPP STEEL EUROPE AG (DE) International Classes: C21D1/78C23C8/22C23C8/26(IPC1-7):C21D1/78C23C8/22C23C8/26 Domestic Patent References: DE102010050499B3N/A2012-01-19 DE102010017354A1N/A2011-12-15 DE1521237CN/A Foreign References: ...