My patent was filed today (July 22, 2009). The invention is designed to trap individual particles such as atoms, molecules, bacterium, viruses, etc. It targets specific particles and allows the rest to flow by undisturbed. Works for desalination and water mining. It will definitely be useful when nanotechnology gets going and would work on my San Diego->Phoenix->Gulf of Mexico water park idea.
The basic idea is similar to children's wooden blocks: the child places the shapes in the appropriate hole: circle, square, triangle, star, etc. Since each molecule/particle has a specific shape and responds to electromagnetic frequencies in specific ways, a box can be built to capture specific particles. Simple, but would work without disturbing the other particles in the water/blood/fluid flow.