Inventor
DE GRAAF JAN
NL22 patents
⚠️ This page may combine multiple inventors who share the name “DE GRAAF JAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIGNIFY HOLDING BV
8 patentsUS11493194B2Nov 8, 2022
Lighting device module for wireless connectivity and corresponding method
SIGNIFY HOLDING BV1 citations60
US10533726B2Jan 14, 2020
Optical arrangement, lighting device and illumination method
SIGNIFY HOLDING BV1 citations56
US12410891B2Sep 9, 2025
Lightguide lamp with crosstalk prevention
SIGNIFY HOLDING BV0 citations52
US12222074B2Feb 11, 2025
Light emitting diode filament
SIGNIFY HOLDING BV0 citations49
US12196376B2Jan 14, 2025
Lightguide lamp
SIGNIFY HOLDING BV0 citations49
US12092271B2Sep 17, 2024
Optical and thermal improvement of a two-sided multi-channel filament
SIGNIFY HOLDING BV0 citations48
US10928032B2Feb 23, 2021
Light emitting device
SIGNIFY HOLDING BV0 citations45
US10756074B2Aug 25, 2020
Light emitting assembly, a spot lamp and luminaire
SIGNIFY HOLDING BV0 citations37
DE GRAAF JAN
3 patentsUS8496852B2Jul 30, 2013
Phosphor in polycrystalline ceramic structure and a light-emitting element comprisng same
DE GRAAF JAN8 citations82
US8513691B2Aug 20, 2013
Light emitting device including reflective optic housing at least partially filled with reflective material
DE GRAAF JAN2 citations58
US8338846B2Dec 25, 2012
Wavelength converted light emitting diode with reduced emission of unconverted light
DE GRAAF JAN3 citations58