|-
| style="background-color:#99ccff;;padding:0.079cm;"| <center>'''2'''</center>
| style=";padding:0.079cm;"| <center>US5997858A[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5997858.PN.&OS=PN/5997858&RS=PN/5997858]</center>
| style=";padding:0.079cm;"| <center>12/7/1999</center>
| style=";padding:0.079cm;"| <center>Pharma Pacific Pty Ltd.</center>