It says 495,000 patent applications were filed in the United States last year, up 6 percent from 2007 and 11 percent from 2006.
It says the location of corporate research-and-development centers, median education level and median income play into those patents. The process can take three to six years and can cost inventors between $9,000 and $30,000.
Idaho, which had 79 patents per 100,000 residents, generally does well in such rankings because of patents from tech companies such as Micron Technology, according to The Idaho Statesman. Micron, however, is severely cutting back operations in the state.