• All sections
• B - Performing operations; transporting
• B29C - Shaping or joining of plastics; shaping of material in a plastic state, not otherwise provided for; after-treatment of the shaped products, e.g. repairing
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders

Patent holdings for IPC class B29C 48/40

Total number of patents in this class: 337

10-year publication summary

Principal owners for this class