Agent for removing phosphates, nitrates and nitrites from wastewater Grant US-5976401-A United States of America 02 Nov 1999
Method for reducing elemental sulfur pick-up by hydrocarbon fluids in a pipeline (law177) Grant US-5618408-A United States of America 08 Apr 1997
Method of making pillared hydrotalcites and associated products Grant US-5348725-A United States of America 20 Sep 1994
Method of making pillared hydrotalcites and associated products Grant US-5075089-A United States of America 24 Dec 1991