A USPTO search with the assignee name of Implant Sciences reveals 43 patents. Very interesting reading. Some a bit of a surprise http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=0&f=S&l=50&TERM1=%22implant+sciences%22&FIELD1=ASNM&co1=AND&TERM2=&FIELD2=&d=PTXT