Artturi Ilmari Virtanen, Finnish chemist and academic, Nobel Prize laureate (d. 1973)
Artturi Ilmari Virtanen (Finnish: [ˈɑrtːuri ˈʔilmɑri ˈʋirtɑnen] (listen); 15 January 1895 – 11 November 1973) was a Finnish chemist and recipient of the 1945 Nobel Prize in Chemistry "for his research and inventions in agricultural and nutrition chemistry, especially for his fodder preservation method".He invented AIV silage which improved milk production and a method of preserving butter, the AIV salt, which led to increased Finnish butter exports.