In its biennial World Intellectual Property Report, the United Nations announced that all 3D printing, robotics and nanotechnology patents since in the last 20 years have been filed by only five countries: The United States, Germany, Japan, China and South Korea. The UN urged the rest of the world to begin investing more seriously in these industries, as they are likely to be the prime drivers of future economic growth. Read more at 3DPrint.com: http://3dprint.com/105046/united-nations-wipo-report/