Patent Secured: 14 years Hive Ceramics: Medical Grade Patent Patent Information for Hive Ceramic Nails:http://pdfpiw.uspto.gov/.piw?PageNum=0&docid=D0752727&IDKey=1DB6C6FD79D2%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPALL%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3DD752727.PN.%2526OS%3DPN%2FD752727%2526RS%3DPN%2FD752727