A couple of us are working on a project to help bring this kind of behavior to light http://www.shellcompanyfinder.com/ShellCompanies/Nathan%20Myhrvold%27s%20In

A couple of us are working on a project to help bring this kind of behavior to light http://www.shellcompanyfinder.com/ShellCompanies/Nathan%20Myhrvold%27s%20Intellectual%20Ventures/11 http://www.shellcompanyfinder.com/ShellCompanies/Nathan%20My... We just started on it, so there isn't a lot of data, but it is already possible to start making associations between companies.