Luminus Devices of Billerica, Mass., developer and manufacturer of PhlatLight LEDs used in displays and lighting applications, has received its 21st US patent for its PhlatLight technology. Luminus’ expanding patent portfolio covers a range of technology including large-area and high-power wavelength-converting LED devices and LED packaging and technology. With 120 patents pending in the US and foreign countries, the company will continue its leadership in solid-state lighting innovation.