EXTI patent information Patent 5,866,420 Artificial liver device <A HREF="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/neta.." target="_new">http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/neta...</A>. Patent 5,532,156 Hepatocyte cell line derived from the epiblast of pig blastocysts <A HREF="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/neta.." target="_new">http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/neta...</A>.