LOS ANGELES, Calif. - The U.S. International Trade Commission (ITC) announced an investigation on Wednesday into the sales of LED technology patented by the University of California. On July 30, UC filed a complaint against five major retailers: Amazon, Bed Bath & Beyond, Ikea, Target, and Walmart for selling filament LED light bulbs without their authorization or royalties. The UC patent replaces traditional incandescent light bulbs with filament LED, using about 90% less energy and lasting years longer. Light bulbs made with this technology are referred to as "Edison" or "vintage" light bulbs because they look like Thomas Edison's iconic light bulbs with glowing filaments visible inside glass bulbs….