In 1931, the Socony Vacuum Oil Company of New York, New York merged with the Standard Oil Company of New York, New York. The company became the third largest oil company in the world, at the time.
In 1955, the Socony Vacuum Oil Company was re branded Socony Mobil Oil Company of New York, New York.
In 1963, the company was re branded "Mobilgas," and subsequently as "Mobil."