Sun Pi (Magic Water System) Patents June 29, 2016 by chungsoo 2 Comments In Korea: Patent No.: 163360 In USA: Patent No.: 6,264,875 B1 Advertisements Share this:TwitterFacebookLike this:Like Loading... Author: chungsoo Marian Hill is a retired Telecommunications Executive. She now devotes her time to reading and painting. She travels extensively throughout the world.