Patenting the debt bomb

It's only occurred to me today that Collateralized Debt Obligations might actually have been patented, and thanks to Google's patent search option here's one, by George H Butcher III, which he sold to Goldman Sachs. The application was filed in 2000, but the patent was finally granted in September 2007.

And here's one of the drawings:

I suppose they patent Ebola-derivative viruses, too.