Inventor
KEUPER MATTHIJS H
US13 patents
⚠️ This page may combine multiple inventors who share the name “KEUPER MATTHIJS H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PHILIPS LUMILEDS LIGHTING CO
6 patentsUS7070300B2Jul 4, 2006
Remote wavelength conversion in an illumination device
PHILIPS LUMILEDS LIGHTING CO212 citations99
US7080932B2Jul 25, 2006
LED with an optical system to increase luminance by recycling emitted light
PHILIPS LUMILEDS LIGHTING CO126 citations97
US7276737B2Oct 2, 2007
Light emitting devices with improved light extraction efficiency
PHILIPS LUMILEDS LIGHTING CO32 citations92
US7212344B2May 1, 2007
Illumination system with aligned LEDs
PHILIPS LUMILEDS LIGHTING CO26 citations92
US7494228B2Feb 24, 2009
Compact mixing cavity for multiple colors of LEDs
PHILIPS LUMILEDS LIGHTING CO42 citations89
US7408201B2Aug 5, 2008
Polarized semiconductor light emitting device
PHILIPS LUMILEDS LIGHTING CO18 citations84
LUMILEDS LIGHTING LLC
3 patentsUS7009213B2Mar 7, 2006
Light emitting devices with improved light extraction efficiency
LUMILEDS LIGHTING LLC167 citations98
US6554451B1Apr 29, 2003
Luminaire, optical element and method of illuminating an object
LUMILEDS LIGHTING LLC161 citations98
US6969946B2Nov 29, 2005
Enhanced brightness light emitting device spot emitter
LUMILEDS LIGHTING LLC67 citations97