US Patent 7,888,914 covers the methods NaturalNano developed to optimize HNT performance over a wide array of plastic manufacturing processes. Here's an odd thing: "Searching US Patents Collection... Results of Search in US Patents Collection db for: PN/7,888,914: 0 patents. No patents have matched your query" http://patft.uspto.gov/netacgi/nph-Parser?TERM1=7%2C888%2C914&Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=0&f=S&l=50 Perhaps the USPTO hasn't updated its website yet, although it says it's up to date as of February 8. Or perhaps there's some other explanation.