• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F22B - Methods of steam generation; steam boilers
• F22B 29/12 - Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes operating with superimposed recirculation during starting and low-load periods, e.g. composite boilers

Patent holdings for IPC class F22B 29/12

Total number of patents in this class: 7

10-year publication summary

Principal owners for this class