Finnish company Raisio Benecol has been awarded US patent 6174560 for its "Substance for lowering high cholesterol level in serum and methods for preparing and using the same," an  improvement over its earlier US patents 5502045  of 1996 and 5958913 of  1999. Besides Raisio Benecol, other companies active in this specific technology are Raision Tehtaat, Marigen, and Procter and Gamble.