• All sections
• B - Performing operations; transporting
• B21B - Rolling of metal
• B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length

Patent holdings for IPC class B21B 1/22

Total number of patents in this class: 647

10-year publication summary

Principal owners for this class