• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F21V - Functional features or details of lighting devices or systems thereofstructural combinations of lighting devices with other articles, not otherwise provided for
• F21V 9/08 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromaticElements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for reducing intensity of light

Patent holdings for IPC class F21V 9/08

Total number of patents in this class: 844

10-year publication summary

Principal owners for this class