For the curious you can search the US patent office for apple inc patents. Here is a simple search that finds over 800 patents from Apple.
http://patft.uspto.gov/netacgi/nph-...ple+inc&FIELD1=&co1=AND&TERM2=&FIELD2=&d=PTXT
Bump
http://patft.uspto.gov/netacgi/nph-...ple+inc&FIELD1=&co1=AND&TERM2=&FIELD2=&d=PTXT
Bump