What is behind the lawsuit accusing Hitachi of Stealing Trade Secrets from Purolite? At the end of August, Purolite, an American water treatment company based in Pennsylvania, filed a lawsuit against the American branch of Japanese conglomerate Hitachi. According to Purolite, Hitachi violated the stipulations of a business agreement by sharing Purolite's confidential trade secrets concerning the decontamination of water, including water contaminated by radioactive waste. Puro