The Standard Vacuum Oil Company was an American joint venture by Standard Oil of New Jersey and Socony-Vacuum Oil (aka Mobil) established in 1931 to make and market products in the Far East. Around World War I, the market in the Far East was too large to leave unattended, but still small. Thus these two American oil companies started Standard Vacuum Oil as a joint venture. The two partners would eventually merge into ExxonMobil in 1999.