28 May 199826 Jul 2001Jose I. ArnoBy contacting the gas stream with an aqueous medium in the presence of a reducing agent such as sodium thiosulfate, ammonium hydroxide, or potassium iodide; prevents formation of oxyfluoride (OF2); controls greenhouse gas pollutionUS2001002501728 Feb 200127 Sep 2001Masahiro AmemiyaCleaning agent composition, method for cleaning and use thereofUS2002013191229 Ago 2