• All sections
• F - Mechanical engineering; lighting; heating; weapons; blasting
• F21V - Functional features or details of lighting devices or systems thereof; structural combinations of lighting devices with other articles, not otherwise provided for
• F21V 9/45 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity by adjustment of photoluminescent elements

Patent holdings for IPC class F21V 9/45

Total number of patents in this class: 60

10-year publication summary

Principal owners for this class