• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F27B - Furnaces, kilns, ovens, or retorts in general; open sintering or like apparatus
• F27B 9/04 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere

Patent holdings for IPC class F27B 9/04

Total number of patents in this class: 159

10-year publication summary

Principal owners for this class