Sina T. Ates Publications Figure 18: Public R&D expenditure as a fraction of GDP Figure 17: Patents and the income share of the top 1 percent Figure 16: United States Tax Reform Act of 1986 and inventor migration Figure 15: Inventors and parental income Figure 14: Impact of foreign investment on firm patents and citations Figure 13: Foreign corporate venture capital as a share of all us venture capital investment Figure 12: Optimal tariff policy and innovation over varying levels of trade openness Figure 11: Optimal US R&D subsidy, over different bilateral tariff rates Figure 10: Share of inventors employed on young firms