US Patent No. 9,820,933 B2 awarded to research university foundation. 11.22.17 US Patent No. 9,820,933 B2: The Korea University Research and Business Foundation, Seoul, has been awarded a US patent for a method for stimulating hair growth or preventing hair loss. The method entails treating a patient with a composition that contains extract of neural stem cells, wherein the extract of neural stem cells is contained in the composition in an amount of 20% (v/v).