The Company is founded with capital of ¥60 million when Itochu Sekiyu K.K., a subsidiary of Itochu Corporation, is split up (Itochu Sekiyu K.K. was originally founded in Jan. 1949 as Nishinihon Beiyu K.K., changing its name in Apr. 1951). Its purpose was to sell products produced at a new refinery built at Mizushima by Itochu Corporation in alliance with longstanding business partner Nippon Mining Co., Ltd. (This marks Itochu's entry into the petroleum sector.)

The Company acquires stock in Oita Kyuseki Hanbai Co., Ltd. (today a consolidated subsidiary).

The Company acquires stock in Unoshima Sansuiso K.K. and advances into the high-pressure gas business.

Capital is increased from ¥600 million to ¥1 billion.

To change the par value of its stock, the Company merges with Itochu Fuel Corporation, headquartered at 2-36 Tsurigane-cho, Higashi-ku, Osaka.

The Company is listed on the 2nd section of the Osaka Securities Exchange and the Tokyo Stock Exchange.

The Company is promoted to the 1st section of the Osaka Securities Exchange and the Tokyo Stock Exchange.

The Company moves its head office from Osaka to Tokyo.

The Company's high-pressure gas arm is spun off to form Itochu High-Pressure Gas Co., Ltd. (today Itochu Industrial Gas Co., Ltd.).

The Company acquires goodwill from Itochu Oil Co., Ltd., the internal oil sales subsidiary of Itochu Corporation.

Head office moves to 24-12 Meguro 1-chome, Meguro-ku, Tokyo.

The Company acquires stock in Tokai Corporation, which is in the process of being reorganized.

The Company acquires stock in Seibu Petroleum Corporation.

The Company's CicoMart arm is spun off to form CicoMart Co., Ltd.

Itochu Fine Gas Co., Ltd. buys out Itochu High-Pressure Gas Co., Ltd. and is renamed Itochu Industrial Gas Co., Ltd. (today a consolidated subsidiary). (Unoshima Sansuiso K.K.. was renamed Chunen Fine Gas Co., Ltd. in 1987 and Itochu Fine Gas Co., Ltd. in 1994.)

The Company acquires additional stock in Itochu Petroleum Sales Co., Ltd. (today a consolidated subsidiary) and becomes its largest shareholder.

The Company buys out Seibu Petroleum Corporation and establishes the Tokyo Seibu branch office.

Tokai Corporation's bankruptcy reorganization proceedings are declared complete by the overseeing court.

The Company takes over gas supply service in Nakatsu City, Oita Prefecture, with the goal of breaking into the city gas market.

The Company changes its name from Itochu Fuel Corporation to Itochu Enex Co., Ltd. Its 18 consolidated subsidiaries are renamed at the same time.

The Company sells off its stock in CicoMart Co., Ltd.

The Company acquires additional stock in Sinanen Co., Ltd. and becomes its largest shareholder.

The Company delists from the Osaka Securities Exchange.

The Company scraps its existing branch-office system in favor of a system of organization around business divisions.

Takigawa Enex Co., Ltd. (currently Itochu Enex Home-Life Nishi-Nihon Co., Ltd.) commences operation upon taking over business operations from Takigawa Industries Co., Ltd.

The Company acquires stock in Kokura Enterprise Vehicle Service Co., Ltd. (today consolidated subsidiary Kokura Enterprise Energy Co., Ltd.).

The Company sells off its stock in Tokai Corporation.

Kokura Enterprise Energy Co., Ltd. takes over the business of Kokura Enterprise Co., Ltd. and commences operations.

The Itochu Enex Group adopts a single unified logo, the Enex Mark.

The Company establishes a basic policy on its internal control system.

Together with Kokura Kosan Energy Co., Ltd., a wholly owned subsidiary, the Company takes over the petroleum business of Yanase Petroleum Sales Co., Ltd.

Enex Clean Power Energy Co., Ltd., a wholly owned subsidiary, enters into a special agency agreement with Hyundai Motor Japan, incorporated in Japan, under which it commences domestic sales of LP-gas automobiles manufactured by Hundai Motor Company.

The Company acquires stock in Itochu Energy Marketing Co., Ltd., and puts it into operation as a wholly owned subsidiary.

Ecore Co., Ltd., the largest LP gas sales company in the Kyushu area, is founded by the consolidation of Itochu Enex Home-Life Kyushu (the Company's wholly owned subsidiary) and Idex Gas K.K. (wholly owned subsidiary of Shin-Idemitsu Co., Ltd.), and commences operation (ownership stakes: the Company 51%, Shin-Idemitsu 49%)

Japan Energy Corporation, Itochu Corporation, Osaka Gas Co., Ltd., and Nissho Petroleum Gas Corporation come to a basic agreement on commencing reorganization and integration of their LPG businesses.

Itochu Enex Co., Ltd. acquires Kohnan Corporation's oil sales business and stock in Kohnan Fleet Corporation, and begins operating the acquired business.

The petroleum product trading business run by Itochu Corporation and the petroleum product logistics business run by Itochu Petroleum Japan Ltd. are split off and acquired by Itochu Enex Co., Ltd., which puts the acquired businesses into operation as its Energy Trade Division.

Head office is relocated to 4-1 Shibaura 3-chome, Minato-ku, Tokyo.

Japan Gas Energy Corporation is founded.

The Total-Life Division is launched.