Kerr (2007): A pioneer study on ethnic inventors The ethnic inventors' share of all US-residents' inventors grows remarkably from 1970s to 2000s: 17%  29% in the early 2000s NB: latter figure in the same order of magnitude of estimates of the foreign-born share of doctoral holders in 2003 (26%) but much larger estimates of highly skilled from DIOC 2005/06 (16%) Fastest growing … – Ethnic groups: Chinese and Indians – Technical fields: all science-based and high tech – Type of applicants: universities (firms catch up later) Important regional effects  ethnic inventors cluster in metropolitan areas  growing spatial concentration of inventive activity
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