General Engineering Resources 27
Delphion, www.delphion.com/ (accessed August 9, 2010). Owned by Thomson Reuters, this sub-
scription service provides full text searching, large le export, and many data analysis tools
for international patents. It can search a number of available international patent collections
and includes the Derwent World Patents Index, one of the oldest online patent services with
access to “18.25 million inventions from 41 different international patentissuing authorities.”
European Patent Ofce Esp@cenet, http://ep.espacenet.com (accessed August 9, 2010).
Developed by the European Patent Ofce (EPO), this site provides access to over 45 mil-
lion patents from EPO member states and over 70 countries and region ...