• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F21K - Non-electric light sources using luminescence; light sources using electrochemiluminescence; light sources using charges of combustible material; light sources using semiconductor devices as light-generating elements; light sources not otherwise provided for
• F21K 9/62 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls

Patent holdings for IPC class F21K 9/62

Total number of patents in this class: 218

10-year publication summary

Principal owners for this class