• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F22B - Methods of steam generation; steam boilers
• F22B 9/12 - Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber the fire tubes being in substantially-horizontal arrangement

Patent holdings for IPC class F22B 9/12

Total number of patents in this class: 8

10-year publication summary

Principal owners for this class