Dmitri Petrovich Konovalov was a Russian-Soviet physical chemist who worked on gas-liquid phases of solutions in equilibrium and came up with several rules that were also independently worked on by J. Willard Gibbs and the rules are often called... Wikipedia
Born: March 22, 1856, Yekaterinoslav Governorate
Died: January 6, 1929 (age 72 years), Saint Petersburg, Russia