This is a tool for patent searching, downloading and analyzing. Analysis focuses on patent-families, citation-networks, assignee-networks , and inventor-networks.
Great tool for visualization of patents. I use it via the JAVA VM and the command line on a windows Vista machine. For how to use go the the "Quick_how_to.pdf" file contained in the download folder. I have also found that Chen Shih Sheng is very approachable via email if there are any problems.