• All sections
• H - Electricity
• H05B - Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general
• H05B 33/22 - Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers

Patent holdings for IPC class H05B 33/22

Total number of patents in this class: 1921

10-year publication summary

Principal owners for this class