2013: Idemitsu Lube India manufacturing plant established in Patalganga, Maharashtra
2006: Idemitsu started its sales & marketing office in India.
1984: Japan's first heavy gas oil hydrogenated cracking unit completed at Hokkaido Refinery
1976: Production begins at Japan's first undersea oil field, Agaoki Oil and Gas Field
1968: Lubricants Research Laboratory opens
1967: World's first heavy oil direct-desulfurization equipment completed at the Chiba Refinery
1957: Idemitsu enters oil-refining business
1940: Idemitsu Kosan Co.,Ltd. incorporated
1911: Idemitsu Shokai founded in Moji